Engine Performance problem
1990 Other GMC Models V8 Four Wheel Drive Automatic 246000 miles
I just failed CA smog, my HC levels are as such
Idle- RPM- 1062, HC measures 173
2500 RPM- HC measures 400
What should I do to correct this? Truck seems to run fine.
have the same problem?
Tuesday, August 19th, 2008 AT 6:51 PM