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View Full Version : What exactly does detonation/pinging sound like?

SHOgoFast
09-30-2006, 07:18 PM
I figured that this would be an easy question to answer with some simple searches on the old forum and the general internet but I cannot seem to find a clear answer...or at least one that makes sence to me.

Is it so noticeable that someone who is paying attention to the sound of the engine would easily pick it up or do you really have to be "listening" for it?

I am confident that I have not had any pinging but want to learn more about what it sounds like and how to "listen" for it?

Links to previous threads or other websites, if available, are fine...im completly willing to read up on it myself.

Thanks.
giddyup306
09-30-2006, 07:25 PM
Like marbles hitting against something.
SHOgoFast
09-30-2006, 07:28 PM
would a clattering sound seemingly from inside the dash be suspect?
stilov
09-30-2006, 07:52 PM
yep...marbles hitting a can or something...then also one time I thought it resembled an reall tinny exhaust leak noise
SHOgoFast
09-30-2006, 11:46 PM
well, i retract one of my previous statements, I have had some pinging then...not bad though. Time for a compression test.
KingpinSVT
10-01-2006, 12:52 AM
It makes a ping like noise. . . . .
stilov
10-01-2006, 12:12 PM
It makes a ping like noise. . . . .


Ah HAH!!!!...so it's not just a clever name.
KingpinSVT
10-01-2006, 03:17 PM
Ah HAH!!!!...so it's not just a clever name.


Its kinda like "rear suspension clunk" :laugh:
SHOgoFast
10-01-2006, 03:32 PM
The sound I am able to produce at certain levels of acceleration does not sound like a ping to me, more of a plastic clattering sound. A ticking would be more accurate of a description before pinging. Not metalic at all. Someone above mentioned sounding like a small exhaust leak, more of that tone than metallic, marbles, pinging.
stilov
10-01-2006, 04:14 PM
One time we had a mustang at the shop that was pinging...kinda sounded like a loose heatshield clattering.
Tony2005
10-01-2006, 05:56 PM
One time we had a mustang at the shop that was pinging...kinda sounded like a loose heatshield clattering.

Bingo!

Scan for CEL code(s). You might get one for a knock sensor.
Keyser
10-01-2006, 06:53 PM
Does it sound kinda like popcorn popping and it happens at the same load and RPM?
SHOgoFast
10-01-2006, 07:45 PM
the loose heatshield is a close description, but not metallic, more like a plastic snapping sound and from the drivers seat it sounds like it is coming from inside the dash. Anyway, I did a compression test today. I have not had any knock sensor codes.

Results:

1: 230
2: 225
3: 225
4: 230
5: 227
6: 230

I believe those numbers to be rather good.
warmonger
10-02-2006, 10:38 AM
Ya those are good. Pinging isn't going to kill you the first time you hear it.

You could just be running hot, that is enough to cause it. Over time and prolonged pinging can begin to pit the piston domes and edges though.

Usually it is from running hot from these causes: high intake air temps, too much timing, too little fuel.