My 2004 GC developed a heavy engine knock - drove straight to dealer. Diagnostics: P0300 Evap Leak, P0302 Misfire #2, P0307 Misfire #7 - recommending re-machine heads or install re-manufactured head.
Only 52K miles, never smoked or had oil pressure problem. Even though it felt like it would stall at any moment, it maintained normal RPM.
Friend referred an engine replacement specialists (Motorworks) who can get me complete remanufactured N engine. Is it worthwhile to spend $5K? or should I consider selling for parts?
This is my 2nd jeep, loved my 90 Cherokee 5 spd went 14 yrs 150K miles before trading in w/o any major problems

 

Our '04 WJ has the 4.7 V8, was bought new in '03, and now has 112,000+ miles on it. We've never had any engine problems with it, it was always serviced at the dealers. I can't understand the problems you had with yours at only 52,000 miles. If it were me, I'd have the heads machined- with a valve job at the same time- and re-installed. JMO

 

Wow never heard of this happening I just hit 211k on my 99 GC limited still running strong. Little bit of rust on the inside rockers but she's holding up well.

 

any updates