1998 oceanrunner johnson 90 hp

[burrtex]

under 1500 rpm runs smooth but

under 1500 rpm runs smooth but has a sound as if a plug is fouled but as soon as you bring it up to just over 1500 rpm clears out and runs very strong ..changed plugs runs the same

 

[jwbmarine]

have u inst new plugs?

have u inst new plugs?

 

[jwbmarine]

do a spark and compr ck.

do a spark and compr ck.