Using Seafoam or the like to clean out stuck rings.

BikerMike

New member
I just aquired a 1948 Cub and it smokes a little. I was going to run some Seafoam through it and change oil to see if this will clear it up a might. It runs great otherwise. Starts easily with the crank handle. Just trying to save myself a ring job.
 
Hi,
They say on here if the engine is smoking, to put Seafoam oil additive in the engine oil.
They sell it at auto parts stores.
Piston rings commonly get stuck, and then the engine will smoke.
It could help the compression, if the rings are stuck, and the Seafoam loosens them.

Make the engine work doing something when using the additive, so it warms up.
I have read on here of people having good results after using the oil additive.

The 1949 Cub operator's manual says to change the oil every 120 hours of use.
If the piston rings are wornout, the seafoam won't help much.
I would change the oil before putting the seafoam in, if you haven't changed the oil since you have owned the Cub, since the Seafoam is supposed to stay in it for some hours of use.
Remember to drain the oil filter chamber by removing the cap on the pipe under it. If it hasn't been drained there lately, the pipe could be plugged.

I have used Rislone, and had good results with that brand, it is an oil additive also.
I haven't used the Seafoam, but have read people's posts about it on here. :)
 
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