yamaha 150 4 stroke skipping @ WOT

onewareagle

Recruit
Joined
Jun 30, 2009
Messages
3
can anyone help me on this?i have a 150 4stroke that has started to bust back @WOT i am running a jet foot so for right now i have ruled out rev limiter due to my running rpms are 5100-5200.this problem just started a few months ago the marina said it was fuel problems changed plugs filter and added a seperator same problem i have noticed that this starts after the motor has been running a while and is warm and it is extremely bad after i have been idling for 30-40 minutes catching shad.the crazy thing is if you pull back on the throttle a quarter of an inch or so it stops(around 4900 rpms) nothing looks out of adjustment on throttle but i'm not certain all i know is the last bit of throttle will just about stall it out and the motor busts back like crazy.any ideas?
 
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