soccerdan90
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- Joined
- Apr 5, 2012
- Messages
- 24
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I just traded a guy my jet ski for his 16 ft flat bottom boat and this 25 hp outboard. He gave me some cash on top so it was a pretty good deal. Anyways I was in the process of changing spark plugs and making sure the correct ones were installed. Well the ones on it are Champions J6C, on sparkplugs.com it says they should be J8C, and on another chart it says it should be J4C. I have no idea what to use. The motor barely runs and the spark plugs are so fouled that it could be the problem. I want to install the proper plugs so that I can rule that out or possibly fix it. Could having the wrong size plug cause me permanent damage? Thanks in advance.