Anything that is supposed to keep oil out of the combustion chamber could be suspect.......rings, valve guides or seals, etc.

There was just a thread on another forum where a guy swears he stopped an old car from smoking by putting Bon Ami cleanser down the carb and it stopped burning oil! He said he put a small amount of cleanser into some gas and slowly poured the solution down the carb as the engine ran, and the cleanser "honed" the cylinder walls and rings enough that they seated.

I am not recommending it, but if it is a high milage car that you just want to get some more time out of.....................

BTW, he suggested changing the oil immediately after so that any cleanser that gets past your rings into the oil wouldn't hurt the bearings, etc. I don't know if it works, I'm just reporting.

Here is what he posted:
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20 coca cola bottle, cleaned w/ carb cleaner
1 tablespoon of powder
the rest 89 octain unleaded.
Shaken not stirred ( just had to say that)

ran the car at aprox 2000 - 2500 rpm
fan to the radiator
poked small hole in side of bottle
dribbled solution into carb over a 10 - 15 minute period

Adverse affects = NONE
Smoke = NONE
had to adjust idle up aprox 1/2 turn (compression rising???)
Sounds better (isn't that scientific)
let it Idle for a minute

Shut her down, gonna let her cool, then test drive for the scientific seat of your pants test.

I will repull compression after she has cooled back down to the same temp as the first test.

Stay tuned.......



Then he updated it:

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every cylinder is AT LEAST 15lbs higher than the first test.

BEFORE
cyl 1 70 lbs
cyl 2 70 lbs
cyl 3 73lbs
cyl 4 71lbs
cyl 5 70lbs
cyl 6 74lbs

AFTER
cyl 1 85 lbs
cyl 2 87 lbs
cyl 3 86lbs
cyl 4 86lbs
cyl 5 88lbs
cyl 6 90lbs

There the answer , YES it works.



And his final update:

____________________________________________________________________


About 2700 miles, the first 2 oil changes as documented, pulled compression the other day, same as before 120ish. oil is clean, no smoke, no oil burning whatsoever. the plugs i put in right after experamint look perfect. (before i was changing plugs every 500 to 1000 miles.)

Starts fine, runs perfect, not much else to say. worked like a charm.

Absoulutly no adverse affects, and all positive.




Like I said, I'm only reporting............

Don