'88 30hp Johnson stalls past 1/2 throttle

donnyd

Cadet
Joined
Oct 31, 2003
Messages
7
My dad is having problems with his '88 J30ECCE. It starts quick and idles great but it stalls/bogs down just past 1/2 throttle. Compression on both cylinders are great and within 5%. New carb. kit installed. Plugs good, gas new. Any ideas? Thanks.
 

rwcreigh1

Petty Officer 2nd Class
Joined
Feb 13, 2005
Messages
199
Re: '88 30hp Johnson stalls past 1/2 throttle

will it run with the cover off?somtimes (it did on mine 35hp)the exaust manifold gasket leaks causing carbond. in the cover and the engine cant get fresh air.
 

fireman57

Captain
Joined
Aug 24, 2004
Messages
3,811
Re: '88 30hp Johnson stalls past 1/2 throttle

When it bogs can you check the spark? Pull a plug wire with insulated pliers and see if your rpms change.
 

donnyd

Cadet
Joined
Oct 31, 2003
Messages
7
Re: '88 30hp Johnson stalls past 1/2 throttle

The boat is in another city so I'll have to relay everything and there will be a delay on the results. I believe the same results are being seen with the cover off. Thanks.
 
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