kevin11mic
Petty Officer 3rd Class
- Joined
- Oct 12, 2010
- Messages
- 96
I have a 2002 Yamaha 70 2stroke that I had to put a new head on last year due to corrosion eating through the head right at the spark plug. New head on and ever since the bottom cylinder hasn’t always acted right. Sometimes it will fire and sometimes it won’t. Pulled the spark plug out this evening and it is rusty on the inside. The other two look good. I’m guessing I’m getting water in the cylinder somehow. Any ideas? Head and head gaskets we’re both changed. Could it be on the cooling head side? Or do I need to redo the head gasket again. There was some metal loss on the power head around the bottom cylinder but it seemed like there was still enough to create a seal. Any ideas would be helpful.