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My 351 Ford has a Holley carb. When engine was run before winter storage it ran perfect. Now I can't get the idle below 1200RPM. This engine is in a boat

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Clean throttle body.check the air filter.

Posted on May 18, 2017

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Overhaul the carby as it is possible that the acccelerator pump diaphragm has a hole it it allowing extra fuel which is causing the high rpms

Posted on May 18, 2017

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1 Answer

I have 2 holley 4160 450cfm carbs on tunnel ram. Electric fuel pump. And after winter storage the front carb is leaking fuel at the top of the back float bowel.


you might try tapping on the top of the carb as it sounds like the float is stuck or run some gum out through the carb and it might remove the varnish in the carb. If not you will need to remove it and rebuild the carb.

Apr 12, 2017 | Cars & Trucks

1 Answer

I have a390 ford engine that back fires while idling it has a breaker point ignition what could be wrong


Check this video for idle speed adjustment. Backfiring can be caused by incorrect mixing in the carburettor or bad timing settings.


Check this link for backfire issues:

. What would cause Ford 390 to backfire through carb Yahoo Answers

Setting Curb Idle Speed of Carburetor Video Holley Carb DVD

Feb 12, 2015 | Ford Cars & Trucks

2 Answers

My 85 f250 460 engine with holly carb starts up then engine races way to high


In 85 Ford used a carb spacer that also had the EGR attached.
2340515603_eefbe3f99a_z.jpg
It could be that the gasket has broken and it has a large vacuum leak. Also the EGR could be stuck open. Look for other vacuum leaks like the PCV and brake booster vacuum systems. A 460 engine will run with huge vacuum leaks especially when the choke is on but the extra air will lean out the mixture and could cause damage.
Enclosed is a video about setting idle on a Holley carb which you may not need but others looking at this post may like to see.

Jan 31, 2015 | Cars & Trucks

1 Answer

1986 ford 351 minnie winnie


go on line to the carby manufacturer (holley-carter or others) and check out the parts section

Nov 10, 2013 | 1986 Ford F 350

1 Answer

I need to buy a new carburetor but i dont know what carb to order its for a 1984 ford ranger its a single cab with automatic trans and v-6 engine dose anyone know what carb i need to order ? thanks for...


The 1986 Ranger V-6 was a 2.8L 170.4 cu or 2792 cc.
The carb for this engine was a 2 BBL Model 2150, E37E-AEA (Will not cross except for re-build kits!)
The Holley remanufactured PN is 645544

Autozone lists 3 carbs... one for manual trans one for auto trans and one other:
http://www.autozone.com/autozone/parts/1984-Ford-Ranger-2WD/Carburetor/_/N-ik8k8Z8vd1l?filterByKeyWord=Carburetor&fromString=search
Auto trans below....
http://www.autozone.com/autozone/parts/National-Carburetors-Carburetor/1984-Ford-Ranger-2WD/_/N-ik8k8Z8vd1l?counter=1&filterByKeyWord=Carburetor&fromString=search&itemIdentifier=50856_108282_3651_1248

NAPA lists the Holley reman... 645544

Thanks for choosing FixYa,
Kelly

Apr 27, 2011 | Ford Ranger Cars & Trucks

1 Answer

Should I rebuild my Ford Bronco 351 Windsor Holly 4 bbl carb or replace it with an Edelbrock carb?


In all my experience, if you know how to correctly tune a edelbrock then go with that, but, holley has outstanding carbs that can muster up to an output of 1,200hp. it would be much cheaper to et a rebuild kit from say, o'reillys, 20-45 dollars depending on which one you have.
I have a 1985 Bronco 351w 4x4, i just rebuilt my holley and she runs smooth

Apr 15, 2010 | 1985 Ford Bronco

2 Answers

I need to adjust a carberater and get the 4 barrel to start working


Most likely you have a Holley carb. You may have a 460 engine. If you have the carb with a big vacuum pot in front of the carb, then you have a RPM governor. The RPM governor will work against the 4 barrel.

The main mixture for the idle jets can be adjusted like any old style carb. You may have plastic caps over the idle screws but take them off. Then use a vacuum gauge on any intake fitting and proceed to read the vacuum level as you turn the mixture screws. You want the mixture to reach a maximum RPM, then evenly turn the screw in until the RPM drops slighty and then balance for smoothest idle.

After this step adjust curb idle and see if this helps when the 4 barrel kicks in. Holley has different springs for the vacuum actuated secondaries and they are color coded. If the carb is original it should be right, but if the carb is of unknown origin you can check the proper vacuum spring, main jet, power valve and so on in a good Holley book. The mechanical secondaries are also listed with clearances to hand adjust.

By adjusting the mixture screws you have set the engine to idle just below peak vacuum pressure. This means you should have more vacuum to work the secondaries.

Feb 16, 2010 | 1983 Ford F 350

3 Answers

83 ford f-250 351. starts but will not idle


If its a (holley) motorcraft 2 bbl carb sounds like the power valve. They typically blow out whenever the engine backfires or they just wear out after time and flood the idle circuit.

Aug 04, 2009 | 1983 Ford F 250

1 Answer

Truck will idle about 15 seconds and dies or bogs down


You need to take a pressure and volume measurement, most fuel pressures for a carburetor engine are 3 to 7 psi, then you need to make sure the volume is consistent for a period of time, 20 to 30 second of engine cranking while the fuel is transferred to a container of some sort, make sure the ignition system is disabled to prevent you from blowing up the property.

Mar 21, 2009 | 1983 Ford F150

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