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I own several Yamahas- 2 stroke and 4 stoke. I do all my own maintenance and service, and after 28 years of working on mine and others Yami's, I am stumped with this one.
2003 50TLRC on an NV 16 flats boat. Bought the boat and it sat for a while before I got the motor. Was having issues with the carbs from the get go, so I took them all apart, thoroughly cleaned them and reassembled with new gaskets, etc. Still having issues- stalling, hard to start, not reaching max RPM.
Those issues aside, what worries me now are these problems: running the motor in neutral in a barrel of water, the pee stream is hot- like 120 deg. hot. This after less than a minute of running. There is a squeak, a chirp intermittently, and it sounds like it it coming from the crank or piston area.
Quick comp test- 90 lbs all 3, holds comp. t-stat- clean and opens in water on the stove. Prime start lever is in the normal position. Fuel filters clean, fuel pump works, oil system works. Spark plugs are new, gapped to 1mm, and are oily after 10 minutes of running.
Why is it getting so hot so quick?
What is the intermittent squeak?
Why does it bog down and die on full throttle?
2003 50TLRC on an NV 16 flats boat. Bought the boat and it sat for a while before I got the motor. Was having issues with the carbs from the get go, so I took them all apart, thoroughly cleaned them and reassembled with new gaskets, etc. Still having issues- stalling, hard to start, not reaching max RPM.
Those issues aside, what worries me now are these problems: running the motor in neutral in a barrel of water, the pee stream is hot- like 120 deg. hot. This after less than a minute of running. There is a squeak, a chirp intermittently, and it sounds like it it coming from the crank or piston area.
Quick comp test- 90 lbs all 3, holds comp. t-stat- clean and opens in water on the stove. Prime start lever is in the normal position. Fuel filters clean, fuel pump works, oil system works. Spark plugs are new, gapped to 1mm, and are oily after 10 minutes of running.
Why is it getting so hot so quick?
What is the intermittent squeak?
Why does it bog down and die on full throttle?
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