Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Welcome I'm Chris aka Moose
Dead head fuel pressure is 20 psi. Flowing fuel pressure spec is 14-15psi.
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I am in my upper 30's, have a wife and 2 sons. I farm, fish, hunt, build, and coach youth soccer. I work on anything with an engine, been to many schools and classes through my 12 years with the dealership to get trained and certified. I try the best I can to share what I know and or have access to with my customers. Please consider I base my questions and answers to you, solely on the information you give me since I am not there to see, smell, hear, touch, or test. I try my best to be here everyday starting at 3pm central. Rating an answer is required. Please let me know if your not pleased prior to rating or if you cannot rate me so I can try to help a different way. God Bless and have a great day.
Adjust the fuel pressure to 14-15 PSI by grinding off the tack-weld on the adjustment screw on the pressure regulator so it can be turned.
I have always used OEM ignition parts, I have never tried aftermarket ones, so I do not have a opinion on other brands. The pressure regulator is i nthe top of the throttle body assembly within the fuel meter near the injectors.
Your getting into questions I do not know the answer to. I do not work on LPG vehicles, so any advice on that would be a guess.
I took on this question "what pressure should my fuel pump be?" because I knew I could answer that.
If you dead headed the pump and only got 10psi then, yes the pump needs to be replaced.
For the other issues, they need to be addressed in a new post, the website only allows us to work on one issue per post.
I hate that you spent money to get your question answered, though left not pleased with my help. I am still here available to help. We can start over from the beginning or where we left off.