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Cub - Running Rough Update

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Author  [Modern View]

11-08-2018 09:06:40

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Mixed up gas and ATF yesterday and ran two gallons through the Cub between idling ad various speeds and driving it around. The engine did seem to run a bit smoother and some power returned but I am still getting some popping through the air cleaner when I idle up, or down. I did get some white smoke coming out of the exhaust and black spots out the exhaust as well on the hood. I plan to put ATF in the spark plug holes next and try that and see where that gets me. Might be a stupid question, but after putting ATF in the spark plug holes is an oil change needed before running the engine?


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11-08-2018 10:02:12

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 Re: Cub - Running Rough Update in reply to hotflashjr, 11-08-2018 09:06:40  
ATF is a very high detergent type oil that cleans up rust and carbon and frees up parts. So unless your oil turns a red color your good to go. If it turns red like the ATF I would run it some then change the oil

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11-08-2018 09:18:37

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 Re: Cub - Running Rough Update in reply to hotflashjr, 11-08-2018 09:06:40  
No. Tranny fluid should burn off. That being said once you get your valve(s) freed up by these methods I would do an oil change before working it like normal.

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