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Posted by Jon on January 19, 2001 at 15:05:16:

In Reply to: Pinging.... posted by JamesM on January 18, 2001 at 15:15:57:

the carburator shaft, fuse tensioner, brake evaporator, axle pump, bumper seals, and alternator valves. All of these can be BIG sources of trouble.

Oh, and low blinker fluid will usually make a weird "clicking" noise when you are changing lanes.


Anyway, something for u guys. Is this what pinging is? Under hard acceleration my car is making a bit of a ringing noise. I cant provide much info as it has only just started doing it, but twice now when driving with a window open I have been able to here a kind of ringing noise. When just cruising it doesnt seem to do it, but if I accelerate from something like 2000rpms hard the ringing is quite noticeable. Any ideas?

Pinging sounds like a tapping or knocking noise (depedning on the severity). S14s are really noisy, so it's hard to hear. Pinging occurrs under heavy load at low RPMs or just from bad timing or excessive carbon deposits, usually when you step on the throttle hard. It will destroy your engine if left unchecked. The combustion temperature skyrockets and soon the pistons or valves (or both) melt. The picture above is from Eric Christie's Euro M5 website.

As for the ringing noise, I have no idea.

Maybe the muffler bearings? They run so hot on M3s that the grease burns out. :-D

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