2003 2.4 spark plug problems

[mb6284]

I own a 2003 wrangler with the 2.4. At 26941 miles the dealer had to change the plugs and wire as per a TSB. Now at 39800 miles it needs to be done again. Whats up?

Mike

[Triple-XJ]

This should be in the "Geno-ral" section :cool:

Your question isnt a Tech Workshop. ;)