125" holes in your intake, to avoid opening the throttle more. the mechanical fuel pump rod is stuck and I cant get it to move. Have a holley 750 3310 carb and it is just dumping fuel in at idle? What would cause this? I can look inside the carb and see fuel dripping on the blades Nothing soming out of vents?. I have an issue with my Holley 1904 carb on my '54 Ford. I’ve gone through the whole carb with a Holley rebuild kit. I do not believe the opening pressures differ that much across the various power valves as much as they do with normally aspirated (for one thing there are only three to choose. Now, Holley EFI products power these cars and are dominating the performance world. Most vintage cars have metal gas tanks, so water can cause the tank to corrode. Holley® has been the undisputed leader in fuel systems for over 100 years. if its mechanical. as said in the previous post that if manifold vacuum is too low to activate the power valve then it will need to be removed. Went out this AM and after i got it started i pulled the flame arrrestor off and noticed at idle it is dumping fuel from the secondaries into the carb. The QFT story is that Holley engineers wanted corporate to make changes and inprovements on carb adjustability, ez change of air bleed, PVCH, IFR etc. but could not get it through. it runs great once i burn off the extra fuel. Check the plug. Re: Holley carb rebuild Assuming that you do indeed have an automotive carb (I never actually looked at numbers), the equivilant Holley marine carb would most likely be the easiest swap. New fuel sender 2. Had the same issue with the same carb, although mine took about a year to surface. could be your low end fuel as well because it wont start. 125" holes in your intake, to avoid opening the throttle more. Comparing the Ultra HP 650 details in this report and my new Track Warrior 850, the HP 650 includes the idle air bypass adjustment but none for the Warrior. 5 power valve which means the power valve is opened up and dumping fuel into the engine when the engine is at or below 6. All I've done to it is swap in a set of 3310 fuel bowls, and a purple secondary spring, set the idle speed and mixture screwsand removed the entire choke mechanism. over that and the needle will not seat (flooding all the time). Solution: Adequate hood clearance is essential to healthy carb operation. 5 inches of vacuum. Center Pivot/Hung Float. Having the wrong gasket installed will cause raw fuel to leak into the power valve chamber. My goal is for only 5-600 rwhp, but i would like to have a little room to grow. Mechanic's Assistant: Has the vehicle turned into a gas hog? And how does it start -- same as usual? Vehicle will not start unless you pour gas into carb directly then the injectors start spraying so I thought the coolant sensor or the tpi sensor was bad but found the wiring harness going to injectors was not grounded so I spliced a. Though it started and ran good, it was dumping fuel and would not lean out to AFR set points. The problem is that the secondaries constantly dump fuel through the Barry Grant Carb, Speed Demon Problem As I said just my opinion and I also have a Holley. Fuel is dumping in at idle on one side of the primaries. First time I saw tractor, distributor will not turn past center when trying to adjust timing, advance housing hits carb. Power valve blown. When the power valve is open , it puts more fuel in the main well where the jets pick up , and could/might/maybe speed up main booster start up so your seeing fuel drip ,. It just seems funny I've got two carburetors that do the exact same thing and each are relatively new. Don't let a faulty carburetor compromise your pickup's performance. The floats, located in the fuel bowls of Holley four-barrel carburetors, control the fuel delivery system and ensure that the carburetor has a sufficient fuel supply. Holley recommends at least 3/4 inch of clearance between the carb and the hood or between the air cleaner and the top of. If you have these carbs on your 240Z-trash them and get ZTherapy SU's. If its too high the under hood temp will cause it to expand and will raise the fuel level and fuel pull over will occur. the power valve should be a 2. Also, with all of the fuel you dumped into this engine, you should change the oil as by now it is most likely contaminated with fuel. Sitting on top is a Offenhauser Intake & a Holley 4 barrel[List:1850-4(4160)] The truck hasn't run in over twelve years. 0 short block with edelbrock performer heads stock cam and edelbrock performer intake. I've looked up the specs on each carb and it looks like the only big difference is the main jet size and the primary power valve size. Try to stick with the conv 4150 style Holley Carb as far as getting the performance out of it. it can cause the float to bounce around a bit. carb for 3G81 engine problems Hi I recently bought a Mitsubishi U15D truck and it has carb problems. Anytime a Holley sits around for a while and dries out, the pump diaphragm should be replaced regardless of whether it seems to work okay or not. i kept messing with it and now it feels like a fuel injected. The longer it sits the more air that gets in the lines as the fuel drains back so the less chance you are going to get fuel. Put a ball valve where hose teed to bowls. Easy Fix for Jeep 258 Carter BBD Idle Problem. Did you seal around the inlet bolt with the Permatex anaerobic. Sorry Dan but some of those carbs get to bad they need to be rebuilt. i prefer the holley. Anyone run into this problem? How can I tell if it is the fuel pump and what is a good replacement? Thanks _____. Take that carb off, turn it upside down, blow through the fuel line into the carb. Holley carburetor. I'll check the wiring on the O2 sensors. Holley 600 cfm is all you need. Good idle with 16. as holley explained to me, there was a batch of carbs sent out with poorly made aluminum metering blocks. My Holley 4160 is still shooting fuel out of the vent tube of the secondaries. doing some research, the holley is not the right application. This year it ran fine until I ran out of fuel and then I Had the dripping at idle. I know just enough about carbs to be dangerous. It's designed to be a simple and affordable way to upgrade from a 4bbl carb to a modern fuel injection system. Holley then bought the Company. The reason is the fuel stays in them until you put your foot to the floor on the highway and hold it there longer than you can legally if you want to replace all the fuel in the bowls with fresh fuel. If your engine is flooding from too much fuel, or not getting enough fuel, consider replacing your Ford F350 carburetor to get your truck running like a champ. Yeah, carb issue is the most likely culprit. 700 ft top, and the raw fuel stink was overpowering. I have 2 950 double pump holly carburetors that are on a 671 bds blower thats mounted on a 502, my car idles and runs fine but when Im cruzing and i give it full throttle it stumbles for a 2 seconeds then after choking it goes off perfect what would be the best way to go about fixing this, if i excelerate a moderate to fast speed its fine, just chokes when i give it full. We have any orifice size from 50-109 to choose from. The fuel pump rod that rides on. model 220 TBI dumping waaayyy to much fuel & flooding engine. Quick change of those and fresh gas and she ran like a champ. Alcohol might have eatten up the little rubber tip on the float valve that does all the work closing off the fuel. Test the float (see the videos). I just gave the carbs a thorough cleaning with carb cleaner. The carb was put on and set up by the shop when the engine was dyno'd after being rebuilt. the power valve should be a 2. Replace any badly worn hose. On the low pressure suction side you are now dumping HOT pressurized foamy fuel from the by pass circuit. What a great carb, with its metering rods and mechanical secondaries. may have blown the diaghpram. Demon Carbs responds: Larger carburetors can make morepower on a dynamometer, but this can also result in slower accelerationand lower efficiency of fuel atomization. I don't know where they came from but after a good cleaning the problem went away. Don't let a faulty carburetor compromise your pickup's performance. Holley® has been the undisputed leader in fuel systems for over 100 years. Make sure your fuel screw is where it needs to be. 6) Pull-off diaphram blown. I'm not overly familiar with what is available for AMC, but most mild mods start with dumping the exhaust manifolds and going with headers of some sort and a more free-flowing exhaust. Though it started and ran good, it was dumping fuel and would not lean out to AFR set points. Dumping unmetered fuel in the intake. Run a test by disconnecting the fuel line at the carb, then with the end in a container, run the starter to see if a good fuel stream is present. Holley Carburetor Tuning: Idle Circuit Mods for High Duration Camshafts - Duration: 12:02. or the floats are stuck , and needle valve in the carb(s) have stuck and its dumping raw fuel into the cyl. Mine turned out to be small metal shards all over the float bowl, apparently hanging up in the needle and seat at times. holley red pumps are preset at 7 psi. First step was to pull the carb, fuel pump and all the old fuel lines (including unused lines and wires for the old aux tank. Even though most “street” Holley carbs only have idle mixture screws on the primary metering block, almost all Holleys have an idle fuel transfer passage that discharges idle fuel on the secondary side as well as on the primary side. Fuel pressure will creep up on you and put too much pressure on the floats, and make them open. That Holley snake oil increases fuel flow momentarily. I have 2 950 double pump holly carburetors that are on a 671 bds blower thats mounted on a 502, my car idles and runs fine but when Im cruzing and i give it full throttle it stumbles for a 2 seconeds then after choking it goes off perfect what would be the best way to go about fixing this, if i excelerate a moderate to fast speed its fine, just chokes when i give it full. I still have not had a chance to work on the carb, but I see from reading the tuning manual that Edelbrock recommends 5. 474,165 views. Hello all, someone replaced the original carb and put a holley on it. with the weights welded. I had my holley fail where the secondaries were dumping fuel. Why the big difference in Holley Street Avenger and Quick Fuel Hot Rod flow ratings? These are vacuum secondary carbs. The holley has really nice fuel bowls that are easy to adjust, don't evaporate, and don't maybe/sortof/don'tknow leak out of plugs. The bottom line is setting up any fuel system properly is a lot of tedious mind numbing work. Checkout all the great event coverage from the Detroit Autorama and Grand National Roadster Show. If fuel seems to be leaking from that hole towards the bottom of it, that means that the diaphragm is ruptured and needs to be replaced. On a Q-Jet, we see that we can control the fuel mixture throughout the operating range. Problem CONDITION POSSIBLE CAUSE CORRECTION 5) Ford& Holley Only. Find Holley Fuel In Stock Now. More complete and better fitting. 2 commonblock for my 84 omni and I have some carb questions. Carburetor dumping fuel. I would try and get my hands on a smaller carb,say a 650dp. One of the most crucial, yet overlooked adjustments in a Holley four-barrel carburetor is the float. Anytime a Holley sits around for a while and dries out, the pump diaphragm should be replaced regardless of whether it seems to work okay or not. schultz nascar fuel heads, dump cans, fuel cell bladders, pumps and accessories in stock. entering the carburetor. You can try all the additives you want but t won't change the way a messed up carb functions. Posted By: ckgreenman on 01/25/09 09:13pm I have a Limited 35ft Class A with a 460 ford and Holley carb that appears to be running a bit rich. I would set the secondary rate opening by different tension springs for the Holley that was sold in a kit by whatever felt good as a good time for them to come on. The Q-jet is easy to rebuild, good fuel economy and heck is already there. It is a good idea to occasionally adjust a Mikuni carburetor to ensure optimal engine performance and to make sure that your bike is not putting unnecessary strain on the engine. when you nail it hard, hard transition from one constant vacuum, to a big drop in vacuum due to throttle blades suddenly opened, and motor starving for fuel because the vacuum is too low to pull fuel through the boosters =lay down bog, this happens with big carb on little motor, then when the rpms get up a bit, it starts pulling more vacuum. Like I said, there are multiple types of float bowls One that has the inlets at an angle / \ of sorts, they have center hung float bowls= bad for hills. Replace any badly worn hose. - Once you get the floats set, the engine should idle, however, it's also possible you could have fouled the spark plugs if too much fuel was dumping into the engine. Also, some advice on your carburetor selection. I am completely new to the Holley design. Im not sure which is the Holley part#. A Holley is as complicated as a toilet. It starts out spitting and sputtereing till the fuel clears out and it pulls hard then. Verify your idle screws on the sides are only turned out 1 1/4 to 1 1/2 turns out. it can cause the float to bounce around a bit. Weld Prostar rims on BF Goodrich tyres front and rear. 6) Caused by installer allowing engine to spit-back up through carb. Carb is on my bench right now Now the question What has changed? Running great earlier that day, temp drops outside, now full fuel. You would bypass the mechanical fuel pump and run a line from a fuel tank directly to the carb inlet fitting. yeah i got my stocker on the car and when i step on the gas it dumps it out of the front and continues to until it runs out and while i was at home i got a nasty backfire and the carb caught on fire luckily no damage was caught it was extinguished promptly. We love our carburetors. bolts on our newly modified 750 Holley to their engine test stand. IIRC, the factory carb is around 350cfm. 7) Carter Only. However, it always floods out when I shut it off warm and park at the store or whatever. Holley has been the undisputed leader in fuel systems for over 100 years. My previous truck was a 355 chevy with holley carb, cam and header and it got 50% better mileage then my present fuel injected 318. Many contemporary MerCruiser engines employ electronic fuel injection, or EFI, that takes the place of carburetors used on older engines. It seems like it's flooding. When i first started using this pump, i could turn it on and it wouldn't show pressure until the engine was running, then it ran at 6. borrow one off one of your mates and give it a go. After oil change almost no smoke at all. Once they are open they will not close. The engine is a 427 +. First step was to pull the carb, fuel pump and all the old fuel lines (including unused lines and wires for the old aux tank. Went out this AM and after i got it started i pulled the flame arrrestor off and noticed at idle it is dumping fuel from the secondaries into the carb. May be different now, but worth checking into. I emailed Holley about it and they told me they stopped production on it and are not making a replacement. You can try all the additives you want but t won't change the way a messed up carb functions. Tech Tip #6 When using a Holley on a car with a bumpy cam, it is often necessary to screw the idle speed screw in far enough that the ported vacuum slot in the throttle bore is uncovered. The reason is the fuel stays in them until you put your foot to the floor on the highway and hold it there longer than you can legally if you want to replace all the fuel in the bowls with fresh fuel. Obviously, saying a carb "has a distribution problem" is actually saying the problem is not changing jetting to fix it. Check for spark on #8. For the last 12 years the owner of this 357ci small-block Chevy-powered '68 Camaro has rocked a Holley carb; for the last eight, it was a 950-cfm Ultra HP. 00 add to cart; oval craft. Time to make some calls to the engine builder! Its a new carb so I don't know. Oh and buy a new carburetor so you won't have to deal with used carb gremlins. What a great carb, with its metering rods and mechanical secondaries. For the first 4 years or so I used pump premium unleaded, for the rest 110 leaded race gas. Now, Holley EFI products power these cars and are dominating the performance world. When a carburetor floods fuel will end up "puddling" on the throttle plates. I dont think my secondary bowl is dumping fuel into the carb because my carb has the plastic vent baffles in place. My Holley 4160 is still shooting fuel out of the vent tube of the secondaries. 5 PV for front and rear. It appeared to be flooding at idle and the fuel was leaking excessively from the throttle body linkages (on both left & right side). We have been in the carburetor since the 1940s and we have an extensive inventory of carburetor component parts that might be otherwise hard to find. Part 2 will go over what those new parts will be feeding. All Mastercraft Boats Knowledge Center Contact Us. Replace any badly worn hose. Going to try to make her run leaner tomorrow, however if any one can tell me what size jets/needles i should be using i will check this also. I used to run a 400 CFM Carter AFB. All carburetors are 100% wet-flow tested and calibrated for use on stock to mildly modified engines. Took the carb apart and sprayed the heck outta every passage available with carb cleaner. My though - stuck float in carb. I think I have resolved part of the idle issue. The carb fuel bowls are bleeding down overnight and dumping all that fuel into the intake and into my oil. At idle you should not see any fuel being drawn from boosters. I've read almost every post in this section about carb options and so far the weber sounds like the best bet, but I cant afford one and time is important as I need to get the car done and out of my friends garage. I run Holley mechanical pumps on 2 of my old vehicles (a sbc and a sbf), and stock GM mech. You’ll hear those old-school guys talk about rejetting a carburetor, essentially they are changing the size of the hole that sprays that fuel that the venturi is pulling in. I have pulled the spark plugs and they are not brown like they are supposed to be, they are black and look kinda wet. I can't compare it to any other carb/manifold swaps on the 1500, as I have only done this one, but I can say that it "feels" like the engine likes it, it does not look bad under the hood, and thus far has been reliable. Still have a ways to go to tune this thing but hopefully Im getting there. by Terry L. 4% again rich but should be cool. Im not sure which is the Holley part#. MSD Billit dist/Blaster 2 coil/MSD digital 6AL ignition/new spark plugs/Wiend street warrior alum intake with holley carb/Coated headman headers dumping into dual exhaust with super 44’s. The power valve was the wrong size. The 4160 idle mixture screw when it is turned all the way in is at max rich for idle. Mechanic's Assistant: Has the vehicle turned into a gas hog? And how does it start -- same as usual? Vehicle will not start unless you pour gas into carb directly then the injectors start spraying so I thought the coolant sensor or the tpi sensor was bad but found the wiring harness going to injectors was not grounded so I spliced a. For the last 12 years the owner of this 357ci small-block Chevy-powered '68 Camaro has rocked a Holley carb; for the last eight, it was a 950-cfm Ultra HP. Most of the numbers are on the front drivers side of the carb or stock quads are on the rear passenger side and I believe the holleys are on the choke flap. The stock manual fuel pump is overpressurizing the needle and seat, forcing fuel past it at idle. if its mechanical. The only time gas should come out of the venturi is when you pump the gas throttle. got the idle to a nice rich 5. Holley has been the undisputed leader in fuel systems for over 100 years. 5 psi to 5 psi to see if that's the issue. Tuning Holley carburetors isn't difficult, but when it's time to get into fine-tuning your street car, adjusting the fuel curve is a great path to travel. by an untuned carb dumping a 10:1 air/fuel ratio into the motor when 15:1 is. I found that the main jet had fallen out. A returnless will make the pump push fuel into a line that is full of fuel with a blockage (the regulator) at the end, but a return will be pushing fuel in at full pressure but not against a blockage. 7) Carter Only. Changed the oil the other day and the smell of gas in the oil was very strong. I have been tempted to mess with it but I need some encouragement. I've got a manual fuel pump, no pressure regulator on the fuel line. The part number on the side is 9153 2431. tell your wife about it) to pour the drained fuel back into the bowl by dumping the fuel down the bowl vent tube (the tube sticking up right at the choke). Holley Fuel For Sale. According to my vacuum measurements, the power valve installed was opening too soon and dumping raw fuel in the engine when it was not ready for it, again richening the mixture! 3. Went ahead and swapped them for a spare set I had on hand (NGK-FR5's). Dual electric fans with separate electric fan for transmission coolers, all run through relays. showing all 23 results holley 830 carb $ 700. Everything is solid and dependable as can be EXCEPT something to do with the fuel pump. Carb comes ready to run. It didn't always do this. Carburetor Main Jets. If your fuel pressure where to surge due to higher voltages,as the car was being shut off it would flood the carb at a time when the motor can not burn the excess fuel. Clean out the gas tank and change the fuel filters. Have a holley 750 3310 carb and it is just dumping fuel in at idle? What would cause this? I can look inside the carb and see fuel dripping on the blades Nothing soming out of vents?. i need herbies 200mph speedo. My combination is this:. Can someone help me out and tell me how to fix this issue?. Find Holley Fuel Line In Stock Now. We are the premiere place for 1st gen and 2nd gen Dodges as well as a great source for newer models as well. dont use carb cleaner as it ruins protective coatings. got the idle to a nice rich 5. I think I have resolved part of the idle issue. Check out the 10 Biggest Carb Mistakes including incorrect fuel pressure, carb size, design, tune, changes, vacuum hookups, engine combination, ignition advance, dyno, idle wrong - Popular Hot. The outlet has a restrictor in the host that is needed to maintain proper pressure, so make sure to remember that. timing could have slipt, the hissing could be blow by but hmmmm. Carb dripping gas Hey Don, Its me John Lindgren and thats my old shammy!!! My 26 footer is doing fine and good to hear things are OK in Pensacola. My combination is this:. Still have a ways to go to tune this thing but hopefully Im getting there. 6:1 range helps, but the mileage benefits of a 2,000-rpm cruise can be easily nixed by an untuned carb dumping a 10:1 air/fuel ratio into the motor when 15:1 is nice enough. Buy Holley 0-80319-1 600 CFM Marine Four Barrel Performance Vacuum Secondary Electric Choke Carburetor: Gaskets - Amazon. So I want a carb to control my own fuel ratio and a standard distributor to control my own spark. An externally adjustable needle and seat assembly is used so that the float level can be easily adjusted without the need to disassemble the carburetor. According to Holley, the valve should be 1/2 the measurement of vacuum at idle in drive. So they left and started their own company QFT. For the first 4 years or so I used pump premium unleaded, for the rest 110 leaded race gas. Problem CONDITION POSSIBLE CAUSE CORRECTION 5) Ford& Holley Only. According to my vacuum measurements, the power valve installed was opening too soon and dumping raw fuel in the engine when it was not ready for it, again richening the mixture! 3. The Q-jet is easy to rebuild, good fuel economy and heck is already there. What’s in the Box? Included in the Pro-Flo 4 EFI kit are an Edelbrock intake manifold equipped with a 1,000 cfm throttle body, fuel rails, and individual injectors for each cylinder, as well as a plug-and-play single connection distributor designed to work specifically with Pro-Flo 4. That sort of takes away the theory that a part in the carburetor is bad. Barry Grant Carb, Speed Demon Problem I changed from my speed demon to a Holley 650 dp classic ($325. It does depend on where the fuel is dumping from, but as already mentioned it's likely either a stuck float in the carburetor, allowing the fuel to overfill the bowl, or a fuel pump that is pushing too much pressure (usually only possible if you have an electric pump, but Mike mentioned his issue with a mechanical pump) and overriding the float spring so it can't close, and overfilling the bowl. Just recently my carb in my 84 GT started flooding really bad. A carburetor supplies fuel to the engine by something referred to as draw. Carter used four different diameter accelerator pumps on the various AFB carburetors: 9/16, 5/8, 11/16, and 3/4 inch. Ive got a 4100 autolite i rebuilt last year and put it on the ol 390 but she was worn out (needed rings) so theres no telling if the autolite is ok. With it running pull the plug wire and see if you have a lose of power or a miss. Run a test by disconnecting the fuel line at the carb, then with the end in a container, run the starter to see if a good fuel stream is present. Edit: This pickup has a Holley carburetor, 318 V8 engine. When you have a wet spark plugs you can have a blown head gasket I found this out from a video on YouTube and it was the head gasket the radiator fluid is slightly seeping into the engine oil that's why the car is not overheating you can fix this problem with Blue Devil head gasket sealer just read the directions and that's the reason why you're getting white smoke from the exhaust and that's. I would set the secondary rate opening by different tension springs for the Holley that was sold in a kit by whatever felt good as a good time for them to come on. Fuel will go to the carb and fill the float bowls but fuel will not go from the float bowl to the engine. With about 10 lbs of air pressure I can blow air thru the fuel line to the empty tank, thru the fuel selector set for the tank with fuel in it, the fuel pump, and the carb and it leaked from the carb on the engine block. Still having bloody problems. I had my holley fail where the secondaries were dumping fuel. 0 short block with edelbrock performer heads stock cam and edelbrock performer intake. I don't know where they came from but after a good cleaning the problem went away. I have often wondered what the jets sizes were, since this is the carb it was dyno'd with and I'm sure it was set up for max power, not street driving / power. This means that the carb meters idle fuel and idle air through all 4 of the throttles – primary and secondary. - Once you get the floats set, the engine should idle, however, it's also possible you could have fouled the spark plugs if too much fuel was dumping into the engine. Fuel filter and carb not always getting fuel If it has a carburetor then it has a mechanical fuel pump. The edelbrock manual also said : Ensure fuel line is not located too close to heat sources such as the exhaust or block, causing expanding fuel to be forced past the needle and seat. It is used for off-road and race vehicle applications. i cleaned out all the lead freeze plugs (casting plugs)with an exacto blade and filled the void with seal all. if it is a mild motor like yours i will step up to the 600 with 62 primaries, 50cc pump. It has a new crate motor and the fuel pump it only seven months old the carb is a brand new holly just got it in Jan of this year. VDL Fuel Systems' Holley 80541 / 650 HP (or Holley 80528 / 750 HP for the 604 crate with open rules) or the Holley 4412 or 7448 for 2 barrel classes is the carburetor you are looking for; but, it will only perform to its potential if the parameters listed above are correct. It seems like it's flooding. I know this is old, but I bought and installed a Sniper kit in 9/18. The Q-jet is easy to rebuild, good fuel economy and heck is already there. Made it so that the boat flat out would not run at anything other than WOT, couldn't idle. with the weights welded. For the last 12 years the owner of this 357ci small-block Chevy-powered '68 Camaro has rocked a Holley carb; for the last eight, it was a 950-cfm Ultra HP. Ip Man 2 in onda alle ore 14,10 su Rai4. Its like the fuel pump is moving more fuel. Holley® has been the undisputed leader in fuel systems for over 100 years. DKP, I'm going (up front) fuel tank, short line, filter, pump, pressure gauge, main line, filter, (at the back)hard line into engine compartment, connection to carb. 0 short block with edelbrock performer heads stock cam and edelbrock performer intake. mmm well ive used em both. Probably isn't just the carb either. The Carter Y series carburetors were 1-barrel downdraft (YF, YFA, YS) or sidedraft (YH) carburetors used at various times on most makes of American cars and trucks, usually on 4 or 6 cylinder applications. 00) and picked up. I've refreshed the carb gaskets, set the floats, changed needles/seats, adjusted idle mixture, replaced the power valve, and adjusted the accel pump linkage. The accelerator pump circuit of a Holley carb is one of the most crucial in a hi-performance engine. What happened was the Overhaul kit that was designed for the 4160 from Holley didnt match up with the right needles. a 350 sbc at 6k rpm requires lightly over 400 cfm. Holley has been the undisputed leader in fuel systems for over 100 years. Since you just recently rebuilt the carb you may have squirreled out the power valve gasket which will dump gas pass the power valve. You need to try a smaller number PV. Changed the oil the other day and the smell of gas in the oil was very strong. The power valve may also be comming into play. Little Big Soldier in onda alle ore 21,1p su Rai4 in replica lunedi 29 dicembre alle ore 0,30. I'm talking a 2" high shot of gas. More complete and better fitting. Gas dripping from the venturi can happen on most carburetors, but we will talk about the Mercarb and the Rochester 2 Jet, 2 barrel. That hose is normal to have on a carburetor, it may have several, I believe it dumps excess fuel so that it doesn't flood in certain situations (not sure about the reason but, it is normal). You can try all the additives you want but t won't change the way a messed up carb functions. Since reliability was an issue, I went with parts I knew would work through past experiance. model 220 TBI dumping waaayyy to much fuel & flooding engine. If the SUs aren't providing enough fuel, then they need to be recalibrated for that particular engine. holley red pumps are preset at 7 psi. My previous truck was a 355 chevy with holley carb, cam and header and it got 50% better mileage then my present fuel injected 318. A belt-driven fuel pump for an alcohol carb, such as this Bo Laws unit, is well thought of by many professional Holley carb specialists. First step was to pull the carb, fuel pump and all the old fuel lines (including unused lines and wires for the old aux tank. With it running pull the plug wire and see if you have a lose of power or a miss. i need herbies 200mph speedo. 7) Carter Only. if you can borrow a smaller carb and try it. Holley Carb Tuning Debate the reason for this debate is that we're trying to see if we can keep the power valve from opening and just dumping raw fuel through the. The stock manual fuel pump is overpressurizing the needle and seat, forcing fuel past it at idle. Why the big difference in Holley Street Avenger and Quick Fuel Hot Rod flow ratings? These are vacuum secondary carbs. It is causing it to load up real fast. To completely disassemble and reassemble your Holley carb, you need a variety of hand tools.