'92 115 yamaha 2 stroke dies during wot

not again

Recruit
Joined
Mar 19, 2017
Messages
1
I have a '92 115 Yamaha 2 stroke and during WOT the engine will just die. We had been having problems with over heating so we changed both thermostats and the impeller and housing. That fixed the over heating but now at WOT it runs good for about 5 minuets and the it will just shut down as though you had switched it off. Then it will not restart until it sits for about 10 minuets. We changed both fuel filters thinking that may be the problem with no luck. Any suggestions???
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
8,851
check for spark when it dies and will not start.
If there is still good spark then you are dealing with a fuel problem.
check fuel pressure and vacuum.( possible restriction or bad pump)
also look for air getting sucked into the fuel lines
 
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