Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello and welcome to just answer, my name is ***** ***** master tech here to help.I cannot see or hear your vehicle so I rely on your input to my questions so I can help you better.I read your question and what you have done so far. This will be redressing to help someone that has been in the trade and knows how to do tests.I see your only getting about 4 psi? thats lower then the reserve pressure. Have you tried pinching off the return line from the rail to see if the pressure goes up? just do this for a second or two just to get an idea, this will tell you if the pump is actually providing pressure or the relief valve is holding pressure.
Yes after reading what you have done so far that would be the next logical step.Also check the ground from tank to body, try a temporary jumper there.
Just checking to see how your doing and if you require further help?
Thank you very much for your help I found the problem you end up being a bad frame ground so I was able to pull it up on trying to clean and reattach it. If I have problems in the future I'll be sure to reach out thank you very much
Please don't forget to give me a 5 star ratting would be appreciated, thank you.