Hot soak surge?

skcur
Posts: 1
Joined: Thu Mar 27, 2014 12:16 pm

Hot soak surge?

Unread post by skcur » Thu Mar 27, 2014 12:25 pm

HI. Am having hot soak surge like symptoms at restart after about 1 to 4 hours on 1992 Chevy Lumina APV Van with 150k miles 3.1 engine. Wont idle without pumping gas pedal for about 1 minute, then no problem. Thanks for any help...

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carriedi
Posts: 2573
Joined: Wed Apr 10, 2013 12:42 pm

Re: Hot soak surge?

Unread post by carriedi » Sat Mar 29, 2014 3:54 pm

a leaky injector may cause a symptom like that. Fuel pressure regulator leaking too could cause a similar symptom. Basically the engine will become flooded and you have to clean out the excess fuel then it will run normally. You might want to look at your fuel trims to see what your computer is doing to adjust the fuel mixture whne the engine is running. See if it is taking away fuel from the norm.
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