1998 GMC Suburban Fuel Pressure and code 300

1998 GMC SUBURBAN
142,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
COOTERMAN
  • MEMBER
  • 2 POSTS
Can anyone please tell me what Fuel Pressure should be running on this truck. The book says one thing and I was told by the parts store another.
Jun 8, 2010 at 3:10 PM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
TBI system 9-13psi

CSI system 60-66psi

P0300 Random misfires normally caused by vacuum leaks and bad fuel
Jun 8, 2010 at 3:16 PM
Avatar
COOTERMAN
  • MEMBER
  • 2 POSTS
Do you know what the KOER fuel pressure would be?
Jun 9, 2010 at 7:55 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Its suppose to maintain that pressure and drops when the injector opens dunno how much though
Jun 9, 2010 at 8:11 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle