Posted: Jul 10 2008 at 3:55pm | IP Logged

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2001FrontierXE;

It may not be the plugs. It may be carbon build up on the plug and in the fuel injectors… It happened to me, I fixed it and still have the factory plugs.

 Carbon build up increases the compression ratio and will glow as the engine heats up. Ether of these can cause the pinging. Carbon build up can also foul the EGR system. Carbon fouling the plugs and/or injectors will cause an engine miss while under power.  

If you have a carbon problem there are several ways to combat carbon.  #1 Run a full tank full of Chevron Premium gasoline with ‘Techron’. #2 Add 8 oz of Pennzoil 2 cycle out board oil to twenty gallons gasoline. #3 Do A Seafoam treatment. http://www.nissanfrontier.org/forum_posts.asp?TID=2510&P N=1

BTW... I run the great  Bosch  plugs in my '76 V-8 Jeep... best plugs and I've tried many!

Posted: Jul 11 2008 at 12:29am | IP Logged

Lakota,

   Thanks for the advice.   Does an autoparts house have this stuff or do I have to go to a Marine place?  When I pulled the plugs today, they were pretty black, so I think you are right Carbon is the issue. 

Posted: Jul 11 2008 at 5:49pm | IP Logged

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Seafoam is at most parts houses. I've used type A tranny fluid and even water ln place of ti to get rid of the carbon. Boomer is correct... try to find the cause. Mine runs just a little rich but I haven't hit the computer with a BFH... yet!  I've been using Lucas Fuel teatment lately... it seems to be doing the job.

Remember a lot of things can help cause Carbon build up... like a fouled air cleaner.

Have a good one and see you later… Don S..

It would be nice if our members would add their vehicle information to their signature (similar to mine) plus add their City and State .

A member in the same town might be willing to drop by and help you with a problem. Or drink all your beer! One took my wife!... J/K

Posted: Jul 12 2008 at 1:01pm | IP Logged

Not burning any oil.  I have recently installed a univeral air intake at the end of the factory box.  I cut off the end, mounted a new housing for the air temp sensor and the filter after that.  Should not be clogged. I have installed the Nissan plugs and only driven it some.  It seems to run a bit smoother and has some pickup.  I've also added some fuel K44 intake cleaner to the tank.  I am wary of hydrolocking the cylinders by the other methods.  Thanks for the advice I'll keep an eye on these plugs and look at them end of next week after a few miles of driving.