Honda 100 - Spark plug Problem.

[Kwayzeewabbitt]

About two years ago I bought a boat with a Honda 100 Engine on it and have just started to use it - it seems to run fine but every now and then it seem to only run on 1 cyl, changing the spark plugs seems to cure the problem, but I am doing this almost every month with little use - surely this can't be right..?<br /><br />Does any body know what the correct type of plug is supposed to be used on this engine? you help would be appreciated very much..

 

[Kwayzeewabbitt]

Re: Honda 100 - Spark plug Problem.

Oh - forgot to mention, I think it's about 15 years old (not sure beacuse the boat is only about 6) and it is 4 stroke (says on it)