Question about 1991 Chevrolet S-10 Blazer
Everything has been replaced, the Mass air flow sensor, fuel injectors, fuel pump. It will run fine for a short while with plenty of power then the plugs start fouling out. You can smell it running rich out the exhaust. The engine is a Jasper 305 High output that we rebuilt out of a 1984 Chevrolet Caprice.
EGR valve sticking or bad vacuum leak, might be a place to start. I presume the ECM, control module are functioning properly?
Posted on Apr 21, 2014
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Posted on Jan 02, 2017
I pretty much had this same problem what your problem is going to be is more than likely you have a pin hole leek in one of the fuel lines inside the plenum .
Posted on Jan 11, 2010
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