never had it happen. I put the plug in fairly loose and turn the crank with a ratchet slowly. it may suck in a little but it makes it easier to blow out. it is also important to have the right size plug. err on the side of a little too big.

I do also use the plug with the outer lip that is bigger than the insertion diameter.

Last edited by Moparmad; 02/02/19 03:11 PM.