Your 3.8 and spark plugs
11-10-2013, 03:02 PM
#1
Senior Member
Thread Starter
Join Date: Aug 2009
Location: Thunder Bay, ON
Posts: 552
Your 3.8 and spark plugs
FYI for those thinking of changing plugs. I know this has been posted a few times here and there but I just wanted to throw in another account of why people suggest you stick with the factory spec Champion plug.
Today I Changed back to factory spec Champion plugs from NGK iridium. Tell tail sign was slowly decreasing fuel mileage over the last month and a half.
Original Champion plugs changed to NGK Iridium at 107,000 klm. NGK Iridium plugs are done already at 150,000klm (only 43,000 klm). By done I mean worn out. They look clean however, the gap is well over 0.060 upwards to 0.080". When I removed the original Champion plugs at twice the mileage they were no where near that far out.
Today I Changed back to factory spec Champion plugs from NGK iridium. Tell tail sign was slowly decreasing fuel mileage over the last month and a half.
Original Champion plugs changed to NGK Iridium at 107,000 klm. NGK Iridium plugs are done already at 150,000klm (only 43,000 klm). By done I mean worn out. They look clean however, the gap is well over 0.060 upwards to 0.080". When I removed the original Champion plugs at twice the mileage they were no where near that far out.
11-24-2013, 07:24 PM
#2
Senior Member
Join Date: Aug 2010
Location: ontario
Posts: 137
Re: Your 3.8 and spark plugs
FYI for those thinking of changing plugs. I know this has been posted a few times here and there but I just wanted to throw in another account of why people suggest you stick with the factory spec Champion plug.
Today I Changed back to factory spec Champion plugs from NGK iridium. Tell tail sign was slowly decreasing fuel mileage over the last month and a half.
Original Champion plugs changed to NGK Iridium at 107,000 klm. NGK Iridium plugs are done already at 150,000klm (only 43,000 klm). By done I mean worn out. They look clean however, the gap is well over 0.060 upwards to 0.080". When I removed the original Champion plugs at twice the mileage they were no where near that far out.
Today I Changed back to factory spec Champion plugs from NGK iridium. Tell tail sign was slowly decreasing fuel mileage over the last month and a half.
Original Champion plugs changed to NGK Iridium at 107,000 klm. NGK Iridium plugs are done already at 150,000klm (only 43,000 klm). By done I mean worn out. They look clean however, the gap is well over 0.060 upwards to 0.080". When I removed the original Champion plugs at twice the mileage they were no where near that far out.
11-26-2013, 06:39 PM
#3
Junior Member
Join Date: Oct 2013
Location: Saskatchewan
Posts: 21
Re: Your 3.8 and spark plugs
I'm quite curious. Does anyone know WHY this is happening? I would think the PCM would regulate voltage and/or current to the plug to maintain a regular spark. What is going wrong that would cause this? Why would different plug brands react like this? That just seems weird. I get why changing from Copper to Iridium would give you a different plug life, but same grade, different brand, I would expect to be fairly close.
11-29-2013, 02:44 PM
#4
Member
Join Date: Jul 2011
Location: Deep South, ON.
Posts: 87
Re: Your 3.8 and spark plugs
I'm quite curious. Does anyone know WHY this is happening? I would think the PCM would regulate voltage and/or current to the plug to maintain a regular spark. What is going wrong that would cause this? Why would different plug brands react like this? That just seems weird. I get why changing from Copper to Iridium would give you a different plug life, but same grade, different brand, I would expect to be fairly close.
Champion to me are generally very good plugs. Problems with breaking and few years ago but are quality plugs now.
Thread
Thread Starter
Forum
Replies
Last Post
Jeff Strickland
Jeep Mailing List
6
11-26-2005 03:59 PM
James Nipper
Jeep Mailing List
12
01-16-2004 08:13 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)