Question about 1988 Buick Electra

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I have a 1988 buick electra w/ 3.8 v6 engine. It runs but will not idle, has the sound of a large vacuum leak which i can't find. Have check all vacuum lines and have replaced the vacuum bypass solenoid as it was damaged. This all started with a backfire on start up last week.

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Get A can of WD40; look for the flammable kind. Start the engine and spray around the manifold and any vacuum hoses you see, work your way from top down, when you get close to a vacuum leak the engine will give you an indication as it changes the speed and sound. Then look closer to identify the location of what is leaking. Hope this helps fixya up.

Posted on Mar 20, 2011


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