I got my spark plugs for my 2.4 from you guys.. autolite iridiums.. i recently installed them about 2k miles ago. from day 1 ive been having an issue with them.

when i put the gas all the way down the car like backfires or whatever. people have described it as blow by. What can i do with them to fix this besides geting new plugs? im already considering getting some ngks so that i can gap them.

 

regap the plugs... close them in... start at like .35 and close them in from there and see if it helps with the issue

 

theyre iridiums tho.. zzp specifically told me not to gap them. and i dont wanna risk breaking the tip and then being out on plugs

 

i re-gap's my NGK iridiums, i have mine set @.035, u have to be careful when closing and opening the gap though...i highly doubt spark plugs come with warranties anyway

 

get some coppers

 

i bought ngk coppers and gapped em, but im gonna try to gap my autolites first thing tomorrow morning and see if that works. if not the ngks are ready to go in.

 

have you done a compression test... whats your vacuum at idle?

 

coppers looooooooooob the boost!

 

what p/n for the coppers?

 

thats not for us HB.... for us it's NGK 3787

 

I knew that lol

thanks though

 

lnf's have weird spark plugs, too long lol

 

I was hoping you were.... but had to double check.... yeah we got some long ass diesel plugs

 

zzp told me 2.4s and tcs use the same plugs.....


but the dude with vacuum at idle.. its like 20 inhg maybe 25.. thats not the problem. im 100% sure its spark blowout

 

ok you mentioned blowby not spark blowout, my bad

idle vacuum sounds spot on