1971 johnson 50hp not geting up to speed

[shawn.54]

this boat ran great last year this year onlly about getting about 3/4 throtle. Starts and idles great then gets a slight miss.

 

[eavega]

Re: 1971 johnson 50hp not geting up to speed

do your basic checks; Compression, Spark, Fuel. there is a huge range of issues those three tests can cover.

-rgds