Question about 1991 Chevrolet S-10 Blazer

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I have a 91 s-10 P/U 2.8L It has a vaccum problem.

I have a 91 s-10 P/U 2.8L. I think it has a vaccum problem. Some of the hoses going into the carbureator dont even **** air. Is there a valve or a sensor I need to change. It's getting fuel, but it boggs down and wont run. It doesn' t idle that great either.

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Some vacumn lines only **** air when the antifreeze warms up,i would check either EGR valve or EGR sensor,then the fuel pressure regulator,but if you think its a vacumn issue,then spray carb cleaner around the throttle body and lines

Posted on Sep 11, 2009


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