Sale ends todayGet 30% off any course (excluding packages)
Ends in --- --- ---
Forum Posts
Courses
Blog
Tech Articles
Talk about engine building here. New products, tricky questions or showcase your work - If it's engine building related it's welcome here.
= Resolved threads
I dropped a lifter and broke a push rod on my gen 5 5.3 silverado. I pulled it out and did a cam swap with dod/afm and vvt delete. now I have low fuel pressure and a major electrical draw of almost 11 volts. Ive replaced fuel pressure sensor after sensor with no change. this is a direct injection engine with a low pressure lift pump and a high pressure fuel pump on the valley cover. currently reading 400 psi at the rail. Has anyone ran into something similar? any advice or would would be greatly appreciated.
Aaron,
Nothing you mentioned is expected for those modifications, so it sounds like something perhaps didn't quite go back together right, or maybe was damaged during remove/reinstall of components. Do you have any check engine codes to help narrow things down?
Perhaps the battery is in bad shape from sitting while the vehicle was apart for repair?
Perhaps a ground isn't secure, or corrosion has formed?
Since the high pressure pump is engine driven, it is possible it or the lobe that drives it was damaged during the engine failure, but that wouldn't impact the electrical system and hopefully there's a simple solution.
Do you have any check engine codes to help narrow things down?
