LarryNorman
New member
I have a 1998 Yamaha 115 outboard 2 stroke that runs great on dry land. When you put it in the water--it idles great, but will not rev up and run as it used to run. It does great on dry land when you rev it up but not under load.
It has been in the shop for 2 years and the mechanic has replaced about everything electrically on the boat and has redone the carbs and gas lines. He is a great guy and has given up on the motor. He says that the Yamaha factory rep says the problem is a cylinder sleeve.
From the bill he has reworked the carbs, replaced the fuel hoses, installed a new CDI unit, Staton assembly, replaced the pump, fuel separator, Pulsen Coil Assembly, crank start key, pressure relief valve assembly. etc.
He says that the motor has good compression and spark.
When I returned home with the boat--I cranked it and it idled well and ran fast when I put it in gear after connecting water etc.
This motor has less than 100 hours on it and has never given any trouble before our fishing trip 2 years ago.
Any suggestions or ideas?????
It has been in the shop for 2 years and the mechanic has replaced about everything electrically on the boat and has redone the carbs and gas lines. He is a great guy and has given up on the motor. He says that the Yamaha factory rep says the problem is a cylinder sleeve.
From the bill he has reworked the carbs, replaced the fuel hoses, installed a new CDI unit, Staton assembly, replaced the pump, fuel separator, Pulsen Coil Assembly, crank start key, pressure relief valve assembly. etc.
He says that the motor has good compression and spark.
When I returned home with the boat--I cranked it and it idled well and ran fast when I put it in gear after connecting water etc.
This motor has less than 100 hours on it and has never given any trouble before our fishing trip 2 years ago.
Any suggestions or ideas?????