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Old 08-06-2000, 11:31 AM
Posts: n/a

You may be right about the carbon being burned out via the occasional freeway driving. Maybe its just a coincidence, but I noticed the smoke only after I've given the 22-yr old motor a couple of doses of STP Injector Cleaner and Gas Treatment. Perhaps the combination of injector cleaner and high speed Italian tune-ups are burning the two decades worth of gunk, hence the ferocious smoke? If this is so, will the carbon deposits (hence, smoke) ultimately "go away."

All feedbacks from this forum appreciated.

1978 W116 280SE Euro

Originally posted by ColMc:
But it could be just carbon burning out of the combustion chambers ....those big engines have a lazy life around the 'burbs so if you kick them , all the plaque gets burnt out of the heads.


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