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350 holley diagram

350 holley carby is on a 250 cross-flow ford motor and it will not idle....please help ?????

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  • Cars & Trucks Master
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Check for vacuum leaks--pipe to base of carby for distributor---vacuum brake hose. Check float levels check power valve diaphragm is not burnt or has a hole. Check the gasket at the base of the carby Screw both idle mixture right in then back each 2and 1/2 turns . Use the throttle until you can get the engine to run and reduce throttle until it idles on the jets.. Check engine timing and correct firing order.

Posted on Apr 28, 2013

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Posted on Jan 02, 2017

leetamara
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SOURCE: chevy

Try adjusting your air/fuel mixture screws. Turn them all the way in and turn them back out 1 and a half turns. This will base line you. Double check for vacuum leaks at the carb. and intake. Spray some WD 40 along the intake where it meets the heads and see if your engine idle changes. If it does, replace you intake gaskets with a good set. Replace carb. mounting gasket. Check for any unplugged vacuum ports. Once you're able to idle it down to 1000 rpm's, turn your mixture screws in until the engine stumbles and turn screws back out until the engine achieves the highest rpm and turn in again only at a 40 rpm drop.

Posted on Jun 22, 2008

greezy_je208
  • 237 Answers

SOURCE: 86 ford f250 4x4 will not stay idling

yes the vacum lins are suspect chechk the vacum advance line, refer to the vacume diagram that holley supplies with the new cab kit.

Posted on Dec 21, 2009

  • 80 Answers

SOURCE: How to use a vacuum diagram.

did you do tune up to fix this problem of stalling or has it been doing it after you did tune up? Just asking maybe i can steer you in a different direction

Posted on Jul 26, 2010

  • 294 Answers

SOURCE: I have a 89 ford

firts you are talking two diferent engines, a 5.0 from a mustang has the same firing order than a 5.8 on other hand a regular 5.0 non HO from a truck or car has a diferent firing order and they arent roller. so look up your options.

Posted on Apr 29, 2011

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2 Answers

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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Chevy


Try adjusting your air/fuel mixture screws. Turn them all the way in and turn them back out 1 and a half turns. This will base line you. Double check for vacuum leaks at the carb. and intake. Spray some WD 40 along the intake where it meets the heads and see if your engine idle changes. If it does, replace you intake gaskets with a good set. Replace carb. mounting gasket. Check for any unplugged vacuum ports. Once you're able to idle it down to 1000 rpm's, turn your mixture screws in until the engine stumbles and turn screws back out until the engine achieves the highest rpm and turn in again only at a 40 rpm drop.

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