Replaced factory spark plugs, now runs like a junky blazer!!!
Thread Starter
Newbie
Joined: Jun 2011
Posts: 1
Likes: 0
From: Ontario Canada
Year: 1999
Model: Grand Cherokee
Engine: 4.0L
Replaced factory spark plugs, now runs like a junky blazer!!!
I noticed after I purchased my grand cherokee 4.0L laredo that the tail pipe was black with carbon. I replaced the plugs and now the diagnostics machine states the 2nd cylinder is missfiring. I went to crappy tire and they stated the factory plugs were champion RC12PEC5? Anyone have any suggestions??? Thanks.
CF Veteran
Joined: Feb 2010
Posts: 12,367
Likes: 23
From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
You didn't drop one and close the gap, did you? Got the firing order correct? Damage the wires pulling them off of the plugs?
Thread
Thread Starter
Forum
Replies
Last Post
Blackcherokee290
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
28
Jan 8, 2025 11:36 PM
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
Apr 25, 2017 08:35 AM
Zerocyde
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
Aug 24, 2015 10:56 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)