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RAS-2002

Cleaning piston rings

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Okay, it looks like the weather around here might be finally starting to get above bone-chilling cold, so maybe I can get to work on Schatzi, my 72 '02.

Talking with a local car guy (American iron only), he says that any old car that's been sitting around for awhile, undriven, most likely has gummed up piston rings. His solution to clean them: pop out the plugs, spray in some carb cleaner, (not too much) and let it sit for a few hours. The carb cleaner will de-gunk the rings. Then put in a couple tablespoons of Marvel Mystery Oil, and crank the engine a few times, so the oil lubes the now-dry cylinder walls. Put the plugs back in and you're good to. Says he.

I have not done this and want to know what do you all think? Make sense? Or a definite do-not-do? As usual, your sage advice is greatly appreciated.

Thanks,

Bob

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how long has it been since the motor ran ?

last oil change ?

how old is the gas in the tank?

forget the spraying carb/choke cleaner part.

only put about 2 0z of MARVEL MYSTERY OIL

in each spark plug hole, hand crank the motor over

2 revolutions, set it sit, put spark plugs back in,

then run it, drive it, pay no atention to

the destroyer smoke screen, keep driving untill

the smoke stops. Says I .

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how long has it been since the motor ran ?

last oil change ?

how old is the gas in the tank?

forget the spraying carb/choke cleaner part.

only put about 2 0z of MARVEL MYSTERY OIL

in each spark plug hole, hand crank the motor over

2 revolutions, set it sit, put spark plugs back in,

then run it, drive it, pay no atention to

the destroyer smoke screen, keep driving untill

the smoke stops. Says I .

I've been driving mine for quite a while now... seems to still be smoking... I seem to be able to ignore it, but the people behind me can't! haha...

I second ignoring the carb cleaner; that is just a bad idea as only some oil is really needed. However, If the motor is seized it's a slightly different process.

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Time for "Auto-RX". It works.

+1

Earl

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how long has it been since the motor ran ? Last week. Took her out for an hour; ran a little rough at first, but smoothed out after she warmed up. Didn't blow any smoke at all. Ran a bit rich, though, so the 32/32 DIDDTA will be getting a rebuild.

last oil change ? Last week, with new Mahle filter.

how old is the gas in the tank? Drained tank, New gas.

forget the spraying carb/choke cleaner part. Forgotten.

only put about 2 0z of MARVEL MYSTERY OIL

in each spark plug hole, hand crank the motor over

2 revolutions, set it sit, put spark plugs back in,

then run it, drive it, pay no atention to

the destroyer smoke screen, keep driving untill

the smoke stops. Says I .

As advised, Marvel put in each cyl, fired her up, smoked quite a bit, but seems okay now. Thanks for your advice, everyone. I knew I'd get the right answers. I might yet pick up some RX. Best regards, Bob

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Yep a bit of auto trans fluid, let it sit for a day or two , give it a light run until it stops smoking then drive it like you stole it for a few miles .It will either ...get worse ... broken ring ....OR it will be all better OOOOOH!

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