Spark plug issue on j35

Ganzo

Ganzo

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Hey guys so my j35 keeps fouling spark plugs. I run the stock normal plugs that autozone calls out. Should i go one step colder? Motor is all stock
 
Fouled, as in oil/carbon or a dead plug? Have a pic of the plug ends? What plug?
J35's love the OEM plugs.
 
As stated above, you need to be using OEM NGK Laser Iridium plugs (or better) on Hondas.

Better being:

1746458226405.png

A "one range colder" plug should only be used on Hondas with higher compression above 10:1... or Boosted, which has not been mentioned.
 
colder will make the problem worse.

this is assuming there isn't an underlying problem, overly rich mixture, weak ignition system, excessive blow by (worn out engine).....stuff like that and the plugs fouling are just a symptom of a greater issue.
 
I haven't put them in yet but bought Denso IK16TT / 4701 .IMG_2833.jpeg
 
I am sure you will check, but make sure that gap is right.
 
Hey guys so yes fouled as in burning too rich. I checked compression to make sure that wasnt the issue and it came back good. I checked the timing belt and noticed it was off by one tooth so fixed that and replaced belt while I was at it. I am using the plugs they recomend at oreilly which are NGK. I will drive the car tomorrow to see if the issue was fixed
 
Ganzo said:
Hey guys so yes fouled as in burning too rich. I checked compression to make sure that wasnt the issue and it came back good. I checked the timing belt and noticed it was off by one tooth so fixed that and replaced belt while I was at it. I am using the plugs they recomend at oreilly which are NGK. I will drive the car tomorrow to see if the issue was fixed
Click to expand...
Any updates?
 
couple years ago i had my j35 out for trans.Got it back in fired up the car and it sounded like a top fueler.Then idle started goin up down so i shut it off noticed it blew black smoke out too.

Had me stumped it was a cold morning checked the codes it pulled up temp sensor.Read up did ohm testing it wasnt reacting too good so got a new one put it in and all was good.Put new plugs in too.Guess the ecu was reading wrong temp thinking it was really cold and adding more fuel.
 
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So i changed the timing belt since the old one was well ummm old lol, i ran it very little cuz i got the bright idea to pull my trans and swap out 3rd and 4th gears to something different. Tranny should be done today, thrown in the car in a couple of days and back up and running hopefully by the weekend. Ill let you guys know whats up
 
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