jdlewh

iTrader: (1)

Hey all,

I Just noticed this popping noise when at idle and I was wondering if it's "normal"?

Specs: Full catless exhaust
Tuned by Tobz

The car idles normal, no weird smells or anything like that.


Thanks for any and all input.

llDemonll

iTrader: (21)

whats your spark plug gap set to?

slowsrt4:(

iTrader: (13)

reminds me of my srt4, what exhaust are you running? any muffler or cat on it at all?

jdlewh

iTrader: (1)

No clue, I can't remember if Tobz replaced them with my 60k. If not they are the stock plugs and I'm close to 70k miles.


It's full Perrin exhaust, yes there is a muffler but no cat.

Just to clarify the car could have been making this sound the 4+ years I have owned it. I just recently got a garage and noticed it when I got out of my car with it still running in the garage.

llDemonll

iTrader: (21)

Different car as my evo has never done this, but my civic did this a long time ago when I replaced the spark plugs with new ones that were gapped almost double what they should have been. that was the day i learned never to trust pre-gapped plugs

jdlewh

iTrader: (1)

Good to know I'll take a look at their gaps. Wouldn't bad gaps cause the car to run bad though? At this time the car pulls great and idles perfect.

Is it possible the tune is a little rich and that's extra fuel burning off in the exhaust? I wouldn't think that would happen at idle though.

EvoTurboTurk

Try to get the coils, plugs & injectors checked out, definitely believe it's one or more of those or even fuel pump maybe?

10isace

iTrader: (12)

What Rom are you running? Do you have aftermarket cams? You may have the timing set too high at idle, running too rich/lean, etc. PM me if you want me to take a look.

jdlewh

iTrader: (1)

Changed out the plugs last night with some NGK stockers, good news is the old plugs all looked good and were properly gap'd. I noticed it really only happens after running the car really hard, if I just drive around normally stop and listen it doesn't pop. I threw the new plugs in gap'd at .22, car didn't pop at idle because it had been off for a bit while I did the plugs. Took it for a hard drive, pops were back.


I have no clue what ROM I'm running. I bought the car almost 5 years ago, as soon as I got it I took it up to Tobz to have him tune it since I didn't know what kind of tune the previous owner had on it. To my knowledge I don't have aftermarket cams, at least I have not installed any anyway.