Hi there, I've got a Yamaha 90HP 90TLRQ 3 cyl.
I used to get 60 mph out of her, but now mostly between 8 to 11 mph, most of the time.
When I first go out on the water, she seems to work pretty good, achieving around 43 to 46 mph. After the engine has run for awhile, she just slows right down to the 8 to 11 mph, usually for the rest of the outing.
Looking at the new spark plugs I installed, the #2 cylinder's plug is clean as a whistle, while the number 1 and 3 plugs are already soaked black with oil.
I have a feeling that it's something electrical? but not sure how to troubleshoot this at all. I also notice that when the engine is running at only 10 mph flat out, she's using a lot of gas, more so than if it were working properly. The engine's been mint since I got it, until this past year. If anybody can help me in either how I could troubleshoot it, or what exactly needs to be replaced, I would be greatly appreciative!
I don't believe taking it to the Marina would help much, because when they go to start it, it will run fine.
The odd time, while trekking along full throttle at 10 mph, without warning she'll kick in and just take right off at full speed, mind you, this is rarely occurring these days as it used to.
Hopefully theres a Yamaha expert who sees this question and know exactly what it is.. Thanks so much for helping friends.
Chad
I used to get 60 mph out of her, but now mostly between 8 to 11 mph, most of the time.
When I first go out on the water, she seems to work pretty good, achieving around 43 to 46 mph. After the engine has run for awhile, she just slows right down to the 8 to 11 mph, usually for the rest of the outing.
Looking at the new spark plugs I installed, the #2 cylinder's plug is clean as a whistle, while the number 1 and 3 plugs are already soaked black with oil.
I have a feeling that it's something electrical? but not sure how to troubleshoot this at all. I also notice that when the engine is running at only 10 mph flat out, she's using a lot of gas, more so than if it were working properly. The engine's been mint since I got it, until this past year. If anybody can help me in either how I could troubleshoot it, or what exactly needs to be replaced, I would be greatly appreciative!
I don't believe taking it to the Marina would help much, because when they go to start it, it will run fine.
The odd time, while trekking along full throttle at 10 mph, without warning she'll kick in and just take right off at full speed, mind you, this is rarely occurring these days as it used to.
Hopefully theres a Yamaha expert who sees this question and know exactly what it is.. Thanks so much for helping friends.
Chad