SPONSORED LINKS

1997 GMC Truck misfire

Tiny
DOLIHAGI
  • MEMBER
  • 1997 GMC TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 104,000 MILES
I keep getting a random misfire on different cylinders, pressure is good, fuel is good, have replaced plugs, wires, cap, rotor, fuel pump and filter, also have replaced the fuel injection spider, can't seem to shake this problem. Any ideas? Thanks Doug
Saturday, November 14th, 2009 AT 10:24 AM

1 Reply

Tiny
MICKEY-D
  • MECHANIC
  • 304 POSTS
My first thought would be that you have some camshaft lobes that are starting to round off, and when that happens you can develop an occasional missfire. As time goes by, you will start to here a lifter tap, because the cam will wear a pinhole in the bottom of the lifter, and it will loose oil pressure. I believe you will need to replace your cam and lifters.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, December 31st, 2009 AT 9:29 PM

Please login or register to post a reply.

Related Engine Misfire Content

Intermittent Misfire
VIDEO
Intermittent Misfire
Instructional repair video
Misfire Random Code P0300
GUIDE
Misfire Random Code P0300
The world of automotive diagnostics can be complex, with numerous codes and potential issues to keep track of. One of the more common engine diagnostic codes is P0300, which...
VIEW MORE

Sponsored links