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1988 50hp idle issue

Klevocz

New member
I’m having an issue with my 1988 50hp Yamaha cutting out at idle. It’s got a rough idle with a lean sneeze along with a strange chirping noise before dying out. Runs great when I open her up at throttle though. I plan on rebuilding the carbs this winter but I was wondering if anyone else has run into this issue and how the fixed it. I also have read it might be a reed valve issue.
 
Is this something that developed suddenly ?------Compression tested ?-------Water pump impeller done ?-----Gear oil checked ?----Oil injection ( hoses ) and pump output checked ?
 
Yea it randomly started at the end of my last trip out. Bogged down at full throttle a few times, that went away and runs fine there but now developed that rough idle and squeak. Gear oil checked and good, impeller was just changed over the summer and pisses good water, not hot water. Compression is good across all three cylinders, 115-120. No water in my gear oil. Oil injection seems to be functioning properly as well.
 
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