Please help...running rough
Thread Starter
Racer
Joined: Jun 2004
Posts: 256
Likes: 3
From: Colorado Springs CO
Please help...running rough
Please help. Any ideas?
Was driving home today and noticed the car was running rough, ever so slightly. Just seemed to hesitate on acceleration (no, i wasnt hammering it). I dont think it's bad fuel, cause it's getting near the bottom of a tank that hasnt caused any problems. Also, it is not currently throwing any codes. The car is an 01 Z with h/c, and 20,000 miles on it. What should i start checking first, sparkplugs??? thoughts please.
Was driving home today and noticed the car was running rough, ever so slightly. Just seemed to hesitate on acceleration (no, i wasnt hammering it). I dont think it's bad fuel, cause it's getting near the bottom of a tank that hasnt caused any problems. Also, it is not currently throwing any codes. The car is an 01 Z with h/c, and 20,000 miles on it. What should i start checking first, sparkplugs??? thoughts please.
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
Originally Posted by HmnRcn
My first thought would be to check the plugs. You may have a fouled or "worn" plug that can be replaced. Good luck. 
I second checking the plugs. I took my "DENSO's" out and they were from 0.050 to 0.060" from plug to plug. I put a fresh set of AC DELCO's in and the car is FASTER now than ever. It made a big difference. Seems GM likes to gap them at 0.040 now.
