buddy208 Posted October 18, 2009 Share Posted October 18, 2009 what spark plugs should i get for my mj 4.0l Link to comment Share on other sites More sharing options...
CWLONGSHOT Posted October 18, 2009 Share Posted October 18, 2009 Autolites copper plus has worked fine for many many years. Stay away from the platnum if a renix, I doubt it does anythiung for a HO either. You would be wasting your money. CW Link to comment Share on other sites More sharing options...
kro10000 Posted October 19, 2009 Share Posted October 19, 2009 From working at a parts store for a while I'm kinda picky about these (for whatever reason) Champion-Jeep or Chrysler AC Delco-GM Autolite-Ford Motorcraft-Ford Bosch-European Imports NGK-Asian Imports E3-Useless Ive always had good experiences with champion plugs in jeeps, I only use platinum plugs in cars that had them originally or that have impossible to reach plugs (Ford F150s, transverse v6s etc. etc.) because you can go further without changing them. Changing plugs on our jeeps is simple so I run standard copper electrode plugs. Its not worth the extra $$$ for platinums with jeeps, and its a good idea to periodically check on your plugs 'cause theyre a good indication for how your motor runs. Anyway it's your preference, NGKs will probably work fine in a jeep, but I stick with champions Link to comment Share on other sites More sharing options...
Eagle Posted October 19, 2009 Share Posted October 19, 2009 NGK (the non-platinum ones) are my first choice by far. 2nd choice is Champion TRUCK plugs. 3rd choice is to go back and pick one of the first two choices. Link to comment Share on other sites More sharing options...
mnkyboy Posted October 19, 2009 Share Posted October 19, 2009 NGK (the non-platinum ones) are my first choice by far. :agree: Link to comment Share on other sites More sharing options...
kro10000 Posted October 20, 2009 Share Posted October 20, 2009 NGK seems to make a good product, i just have issues putting anything japanese in my truck... the ax and gauge cluster have me all nervous already :( Link to comment Share on other sites More sharing options...
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