96 GMC Sierra 2500 seems to be misfiring but autozone and Firestone scan can't find misfire
96 GMC Sierra 2500 seems to be misfiring
but autozone couldn't find any problem on
scanner and Firestone scan said maybe a
sensor. Also trying to start the truck is very
tough and takes a little bit for ignition to
kick, very rough start! Any help would be
This sounds like a fuel issue. It would not throw a code. Need to check fuel pressure, it should be 56 to 63 lbs. You want to do a bleed down test with the fuel pressure also.
It may take more than a standard code reader to find the problem, a scanner with live data and freeze frame would really help with the diagnosis on this one. the tech can then see what the ECM is reading in real time.
Search Maintenance & Repair Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Maintenance & Repair Experts