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This is driving me crazy, so wanted to post here in case someone has experienced similar. I have a video illustrating the problem. The motor (2003 Yamaha 115 2 stroke) starts and idles, no problem. I can then run wide open most of the time but then once or twice a trip, it gets into the start shown in the video. No matter how much throttle I give it, it doesn't go above 3500 - 3600 rpms. It will run at that rate for as long as I need to. You'll see at the 1 minute mark how it struggles to plane out when in this state.
To get back to normal performance, I can just stop and restart the engine. Don't need to wait, just stop and immediately restart and I am back to normal. You'll see me do that at the 1:10 mark of the video and I am back to rocket-like performance.
I already replaced the fuel-water separator.
It SEEMs to be a fuel issue so first question, anything else I should consider?
Assuming it is a fuel issue, I keep hearing about the VST filter but I honestly can't find the stupid thing on this motor. Is that a culprit and anyone have a good video or DIY thread?
What about the fuel pump? That is easy to get to, could this be the problem?
Thanks in advance, this is driving me crazy and too sporadic to take to an expert right now!
Steve
To get back to normal performance, I can just stop and restart the engine. Don't need to wait, just stop and immediately restart and I am back to normal. You'll see me do that at the 1:10 mark of the video and I am back to rocket-like performance.
It SEEMs to be a fuel issue so first question, anything else I should consider?
Assuming it is a fuel issue, I keep hearing about the VST filter but I honestly can't find the stupid thing on this motor. Is that a culprit and anyone have a good video or DIY thread?
What about the fuel pump? That is easy to get to, could this be the problem?
Thanks in advance, this is driving me crazy and too sporadic to take to an expert right now!
Steve