yamaha 115hk rough on idle and poor drag

Joined
Apr 21, 2009
Messages
3
Hello fellow boaters

I am the proud owner of a 115hk ceto 99 model.

unfortunately....

The engine runs rough on idle at 6-800 rpm it can run for some time and suddenly stops.

At full throttle the enginee lacks power..

All of this started after driving through rough sea a sunny afternoon..

The story so far ;

New inline gas filter
New spark plugs
Checking compression on all four cylinders ; 7.9-8.1 bar
Dismantling the carburators and cleaning them up, by the way they where sunny.
New battery for what its worth
checking the sparks on the plugs, with a cheap instrument you put in line with the cable, they all show the same light...

As the winter knocks on my door i would love to have the enginee running like it once did ;-)))

Any suggestions fellows
 

Bonz099

Cadet
Joined
Oct 6, 2009
Messages
24
Re: yamaha 115hk rough on idle and poor drag

What about spark? have you made sure your getting spark to all 4 clyndrs ?
 
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