Stalling of vehicle ,Slow pickup speed and bad mpg . lack of power and poor mpg. on 1990 Chevrolet S10 Blazer

alway the same,popping through carburetor, lack of power on acceleration, slowly pickup speed if I let go of accelerator pedal out slowly. I get poor mpg about 10miles per gallon. are 4.3 bad on gas. thanks

by in Caldwell, ID on March 02, 2011
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1 answer 1 comment
ANSWER by , March 02, 2011
FYI - no carburetor here; you have fuel injection. I know what you are saying, though. I'm wondering if you have a restriction in your exhaust, like with your catalytic converter. I would recommend having your exhaust checked for a restriction. Either this or you could have a big vacuum leak somewhere at the engine - like an intake manifold gasket, or a vacuum line.
COMMENT by , March 02, 2011
Hi, My friend and thank you. Anyhow, I checked for a for vacuum leak but not thoroughly . I was getting about 16-18 psig not quite close too normal at idle . I think it should have been 20 psig. I'll check my cat, okay and hopefully that will be the problem. I really thankful for your help. God bless you, man. some other people think an egr is the problem, map , coolant and oxygen sensors and that a little bit of money for a poor man.