Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
first,,tune it up if it hasn't been done lately..new plugs,wires,rotor and distributer cap.....make sure the radiator cap is good..also check around the water pump for water evaporation.it is a possibility that the head gasket to be blown,letting the coolant into the cylinder,but it isn't likely on this engine......you need to check the fuel pressure.the fuel pump may be weak...these must have no less then 9psi at all times.....i have seen on this model that the rubber fuel line from the fuel pump to the fuel sender inside the fuel tank,bust,causing the pump to suck air
PROCEDURE A fuel system pressure test is part of several of the Diagnostic Charts and Symptom Checks. To perform this test, follow this procedure:
Thank you for your answer. I will for sure get you paid you deserve it. I wanted to tell you something that I intended to include in my first question. I have a friend that is a mechanic that drove and listened to the truck. He suggested that he believes the miss and knock is being caused by a busted wrist pin. I don't drive this truck too many miles and about a year ago, approx. 8,000 miles ago, I had the truck completely tuned up including plugs, wires, distributor, distributor cap, radiator cap, fuel-oil-air filters, hoses and belts as well as brakes, rotors and front end components.
This mechanic friend told me that I shouldn't spend any more money on this motor. He recommended that I have another engine installed. Mind you he isn't doing the work so he has nothing to gain by this advice. He also told me to check on the warranty of the new engine to ensure what the requirements are regarding who installs the engine.
Does this information make a difference to you regarding your thoughts on my engine problem? And if so, what recommendations do you have? Again thanks for your help.
yes it does...apparently he is hearing a mechanical knock...if this is the case,,it may be a connecting rod,it is unlikely for it to be a wrist pin,but it may be where it is connected to the crank....and he may be right ,,,,though the engine should run fairly smooth,sense your friend can hear it,you may want to take his advise on this one