Holley problems
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Junior User
Joined: Aug 2006
Posts: 94
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From: Eatonville ,Wa
Holley problems
i recently got a 86 f250 351w ho. my problem is when i go from a stop or even slow for a turn then reaccelerate it bogs down and i have to pump the pedal to keep is going. my first thought was the accelerator pump but now I'm thinking power valve? i believe this carb is a Holley 4180? any ideas? thanks
Post Fiend
Joined: Oct 2003
Posts: 9,176
Likes: 4
From: Western Central NV
A blown power valve will cause a rich condition. On the 4180 they are 2 stage power valves. that cost about $30. The problem is 4180s have no power valve protection so any back fire will blow them out. So it is strongly recommended that anti back fire protection be installed.
I have found that the 4180 is an expensive carb to rebuild, years ago I replaced mine with a 4160 600 CFM Holley. After 1992 ALL Holleys have anti back fire protection from the factory.
Craig
I have found that the 4180 is an expensive carb to rebuild, years ago I replaced mine with a 4160 600 CFM Holley. After 1992 ALL Holleys have anti back fire protection from the factory.
Craig
thanks for your reply
