HELP! Rough idle after spark plug/wires replacement...
Le Mans Master
Joined: Sep 2003
Posts: 6,276
Likes: 227
From: Farmington CT
Cruise-In VII Veteran
Bill has covered this post well, In the future a laser temp gun also works very well in troubleshooting a misfire
just shoot the header tubes 1,3,5,7 2,4,6,8, you'll see the misfire cyl. down about a 100 degrees
http://www.raytek-northamerica.com/c...l?cat_id=2.3.5
I've found the oem GM wire(packards usually) tend to come apart on the plug end easily, In '04 GM went to a red wire, I believe this is the same one used from the GMPP catalog
just shoot the header tubes 1,3,5,7 2,4,6,8, you'll see the misfire cyl. down about a 100 degrees
http://www.raytek-northamerica.com/c...l?cat_id=2.3.5
I've found the oem GM wire(packards usually) tend to come apart on the plug end easily, In '04 GM went to a red wire, I believe this is the same one used from the GMPP catalog
Team Owner
Joined: Aug 2006
Posts: 24,689
Likes: 1,180
From: Raleigh
Thought I might throw this one out there in case any one does a search on this. I had a similar problem with a mis fire after changing the plugs. Only mine would mis fire only under load but the idle was smooth. Over a couple hours it got worse but still only under load. Basically you could drop it into 4th at 30 go to WOT and the thing would go crazy.
Turns out it was owner induced. I simply had not tightened plug number 3 and that was the cause. So if all else fails check the plugs to make sure you tightened them!
Turns out it was owner induced. I simply had not tightened plug number 3 and that was the cause. So if all else fails check the plugs to make sure you tightened them!
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
If I had to guess I'd say you damaged the plugs during install, I wouldn't bother trying to get a refund. Same on the O2 sensor, you didn't need it, but it's used now.
Lessons learned, profit from them in the future.
Lessons learned, profit from them in the future.
