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Old 02-04-2016, 12:23 AM   #3
daveymc29
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Join Date: Sep 2010
Location: Danville, CA
Posts: 1,566
Default Re: Marvel Mystery Oil Question

Same here, except I had a valve that was stuck open, causing a miss and resulting in a very noticeable loss of power. I put some MMO in the cylinders. rotated the engine without the key on, put another shot in the offending cylinder and let it sit overnight, drove it to coffee the following morning after reinstalling the plugs and no more miss. A bit later the float valve on the carb. stuck and I put 4 oz. in the tank, tapped the float area a bit and haven't had anything stick since. Now I use it in my roadster also, which has a newly rebuilt "touring" engine. Seems to make both cars happy which keeps me happy.
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