rgaynor85

ok i had a noise goin on im my car which i belive to be detonation i had it scaned with hp tuners and in fact i had some KR. so i cleaned the maf and it went almost completely away.

so figureing the car is new to me ive owned for about 2 months, lemme give it a tune up sense i dunno when it had one last. i did seafoam treatment,NGK tr55's gapped .055,msd wires,fuel filter, pcv valve, and RP 10w30 for oil change, but after my tune up this noise that disapeared came back full force. my previous plugs were denso iridiums, and they all had a light brown colored seemed just right.

so i cant figure out what the hell is goin on. i get ping/clanging noise down low below 1500rpms when i tap the gas and detonation ping noise above 4500 WOT. im am gettin down to my last nerve with this **** please someone gimme an idea what else could i check to get rid of detnation why could it be happening.

Heres a previous thread from before on this problem:
https://ls1tech.com/forums/pcm-diagnostics-tuning/445950-ping-stock-tune.html

99PontTA

put the old plugs back in and be sure the gap is opened up properly

rgaynor85

do u mean buy new plugs the same as the old ones or actually use the old ones again?

99PontTA

if they look ok why not use them again? aslso check the gap....might tell you what is going on.the only thing you changed that could effect cylinder flame propagation is the plugs...either the gap was wider or the heat range was different....something is way different in those plugs.DON"T reset the gap...what ever gap those plugs were at must have been good.a tighter gap is BS...wider ALWAYS works better!

rgaynor85

well the denso iridiums that were in there also had a .055 gap the same as the NGK tr55's i just put in, the only thing is.. the denso plugs i did have the same problem with before but it decided to go away after cleaning the maf, thats why im so confused. perhaps i will try puttin the plugs back in to try and narrow down exactly what the problem is

99PontTA

they must be a diff heat range.

JD_AMG

Get an oil catch can, I did, and my ping is gone.

rgaynor85

well i just took my car out to show my buddy at work the ping and the damn thing wont do it now, i think my car likes to make me look like an ******* lo, your ping before the catch can was it only high rpms cause i might try thatl

JD_AMG

Yes, my ping was only at WOT around 5000+ RPMs. And like yours it would varry from time to time, sometimes not do it at all, and sometimes do it really loud (thats when it was hot out).
I suggest doing the homedepot catchcan, its cheap and then you will know if thats whats causing the ping. I have caught a good deal of oil so far...

rgaynor85

i think i will give it a try, did u ever have the low rpm clanking ping noise also, or just up high

JD_AMG

Just high.
Your running premium fuel right?

rgaynor85

yeah 93 octane

rgaynor85

oh yeah the rear driver side plug was a little black/wet lookin wat could that be

rich Z

I get pingin below 2k rpms if I lightly blip the throttle and I have a AMW catch can. I still get oil vapor into the intake. I recently have done the Steve Hovis mod. This is the last thing I can do to stop vapor mist. I have been dealing with this for 2 yrs now and nothing works.

rgaynor85

oh yeah thats how mine does it when i "blip" the throttle for a sec and it itll ping ping and gone, or sometimes at wot, im doin a catch can tonite and see what happens also i also think it maybe the gas i used a few times but forgot it used lol. well ill let ya know but more info is always appreciated by anyone i say good day for now

JD_AMG

Whats the "Steve Hovis mod"?
Replacing the stock oil cap with a breather might help. Or maybe getting a breather on the catch can like this:
http://www.jegs.com/webapp/wcs/store...tegoryId=16163

rgaynor85

i bought a sears compressor filter last night i think they work well from what i hear, im gonn put it on tonite andsee what i start catching, oh and i think my hole issue was the gas i used sunoco 93 yesterday again and my noise is gone now i used cheapy station when i got the noise back

TopFlite

It's your belt tensioner. I have the same problem and after stressing about it for a couple weeks, it was appearant it was the tensioner. You can listen to it at idle and it even sounds like the pinging noise.

rgaynor85

no i dont think its that it quiet under my hood. new tensioners anyway