When you roll a boat and the engine gose under is the plug bad from that?

No, not normally. But you can kill the engine if it is still running full blast and sucks in water. Water does not compress like air...

Sean

no i shut it off as fast as i could.

It pretty much shut is self off right before it went under

The plug is bad if it don't glow, if you race you may want to use a new plug each race day / weekend. If your boat goes under and gets water in the engine, just flood a little bit to force water out , start and run a bit and it will flush all the water out.


Paul

plug should be fine. Ive run all day on the same plug with a couple dunks. Make sure you get that thing fired up as soon as you get the water out and let it run to get whats left out, then oil after end of day like usual.