Question about Chevrolet Caprice Classic

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I have a 1994 chevy caprice classic. i know gas has went up, but my car is sucking up gas extremly bad. i already changed the fuel filter and fuel pump and the distubtor and cap, still same problem. what else could it be?

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You did not say which engine you have. If it is the 5.7L V8, your only going to get12 or 13 mpg. You might try a new set of spark plugs and a new air filter. I put the E3 plugs in my 4.3 GMC and the mileage jumped dramatically. They are a little pricey, but what isn't these days?

Posted on Dec 28, 2010

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1 Answer

How many hours does it take to replace a fuel pump in a 1994 chevy caprice classic


I would say 2-4 hours, since the gas tank has to me removed to replace it.

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Change the fuel filter again and if you have fuel injectors, you need to get them sleaned....I believe some of those oil one stop service places will do it. If you have a carb, you need to blow it out....but change that filter....maybe even a few more times if you had that stuff come out the first time.

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Also do not let tank run low because fuel in tank keeps in tank pump cool. This is why the pump is in the tank.

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Try checking fuel pressure again with a guage on the fuel rail. If you still notice the pressure is low and you know the fuel pump is good, the fuel pressure regulator may be bad. Sometimes you can tell by unplugging the vacuum hose from it and if you see gas that means the diaphram is leaking. If everything checks out with the fuel system a bad EGR valve or EGR valve solenoid can cause cars to sort of stall under half throttle. Good luck and keep me posted. If you found this helpful please rate this solution.

Thanks - Tech101

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