put my 2005 yamaha 2000 4 stroke in for a 100 hour service. here is what they did
Compression Test - Good (140-155 psi)
Spark Check - Good
Lube
Check Faults on Computer - No error codes
Change:
Engine Oil
Oil Filter
Fuel Filter
Impeller
Gear Oil
Spark Plugs
heres the problem. the motor runs fine under 3900 rpms. anything above 3900 the engine will start bogging, but continue to stay around 3900 rpms.
took it back to the shop and they told me the VST filter is clogged. had the techs cleared it up.
took the boat out again and this time it will go up to 4200 rpms and do the same thing. let the boat sit for about an hour and start to head back. the motor ran fine and we took it up to about 5400 rpms. did one more run around the harbor and the problem came back. would not go past 3900 rpms.
please help......
Compression Test - Good (140-155 psi)
Spark Check - Good
Lube
Check Faults on Computer - No error codes
Change:
Engine Oil
Oil Filter
Fuel Filter
Impeller
Gear Oil
Spark Plugs
heres the problem. the motor runs fine under 3900 rpms. anything above 3900 the engine will start bogging, but continue to stay around 3900 rpms.
took it back to the shop and they told me the VST filter is clogged. had the techs cleared it up.
took the boat out again and this time it will go up to 4200 rpms and do the same thing. let the boat sit for about an hour and start to head back. the motor ran fine and we took it up to about 5400 rpms. did one more run around the harbor and the problem came back. would not go past 3900 rpms.
please help......