Hi all I'm new to the forum and I'm hoping you might be able to help me out with this one to salvage my cabin rental fun next week.
The motor runs well with good power up until it hits 5,000 RPM. Once it gets to 5,000 it alarms briefly, erratically drops RPMs to 0 then runs fine as long as I keep it under 5k.
I can see a solid stream of water coolant shooting at the back at all times. It has the correct amount of oil in the oil is really clean. 100 hours on engine.
I changed the spark plugs and replaced the inline gas filters. The old filters looked clean when I cracked them open. I did put some Quicksilver fuel injector cleaner in the tank and ran it for about 30 minutes less than 4800 but that has not seem to helped.
Alarm from Mercury vessel view app:
https://photos.app.goo.gl/pNdsdVb53nMdm8ZF8
I did replace the camshaft sensor, since available on Amazon, but it made no difference.
Cuts out at 5,000 RPM (drops to 0 RPM), video
https://youtu.be/Z5bVdfYn1FY
I have recently noticed that the lower unit is creating a whining noise. This seems to come and go. Video
https://youtu.be/v7zIIcYRSKU
Nameplate
https://photos.app.goo.gl/RbX26zwAaCyXiM1o9
Any help appreciated!
The motor runs well with good power up until it hits 5,000 RPM. Once it gets to 5,000 it alarms briefly, erratically drops RPMs to 0 then runs fine as long as I keep it under 5k.
I can see a solid stream of water coolant shooting at the back at all times. It has the correct amount of oil in the oil is really clean. 100 hours on engine.
I changed the spark plugs and replaced the inline gas filters. The old filters looked clean when I cracked them open. I did put some Quicksilver fuel injector cleaner in the tank and ran it for about 30 minutes less than 4800 but that has not seem to helped.
Alarm from Mercury vessel view app:
https://photos.app.goo.gl/pNdsdVb53nMdm8ZF8
I did replace the camshaft sensor, since available on Amazon, but it made no difference.
Cuts out at 5,000 RPM (drops to 0 RPM), video
https://youtu.be/Z5bVdfYn1FY
I have recently noticed that the lower unit is creating a whining noise. This seems to come and go. Video
https://youtu.be/v7zIIcYRSKU
Nameplate
https://photos.app.goo.gl/RbX26zwAaCyXiM1o9
Any help appreciated!
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