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Posted by chief
 - July 17, 2012, 14:22:00 PM

Just as you indicate, carbon, compression (too high), cheap gas and engine overheating are all potential reasons.

Posted by ddrifter
 - July 17, 2012, 08:37:44 AM

 >:(

Recently my 1999 Drifter has begun to'ping' but only 2 up and only when I roll on in top gear on the highway.
Anyone else had this problem or know a cure. I guess lean running and carbon deposits are the obvious cause.

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