Just got a 17' hydra-sports seahorse 170cc with a 2008 BF90D with 20 hours on it.
The boat and motor sat for 5 years until I bought it 2 months ago.
Took it to a Honda service center for the recommended 20 hour maintenance along with a thorough going over due to the lengthy sit. As expected the fuel system was pretty gummed up had all the lines, filters separators cleaned or replaced as they deemed necessary. water pump as well. Diagnostic system did not find anything out of sorts.
Drained the fuel tank and filled with fresh 93 octane gas and took it out for a test drive this morning.
issue is that it runs perfect until I take it to wide open throttle, it quickly surges up to 3400 rpms and stays here for about 2 minutes then it slowly begins to rise in rpm until its where I would expect it to be. Note, this is only when under load, if I disengage the transmission it surges as expected, however as soon as the transmission is engaged it behaves as stated. I would expect this motor to push this boat around without breaking a sweat.
Any thoughts on what could be the problem here?
- Ken
The boat and motor sat for 5 years until I bought it 2 months ago.
Took it to a Honda service center for the recommended 20 hour maintenance along with a thorough going over due to the lengthy sit. As expected the fuel system was pretty gummed up had all the lines, filters separators cleaned or replaced as they deemed necessary. water pump as well. Diagnostic system did not find anything out of sorts.
Drained the fuel tank and filled with fresh 93 octane gas and took it out for a test drive this morning.
issue is that it runs perfect until I take it to wide open throttle, it quickly surges up to 3400 rpms and stays here for about 2 minutes then it slowly begins to rise in rpm until its where I would expect it to be. Note, this is only when under load, if I disengage the transmission it surges as expected, however as soon as the transmission is engaged it behaves as stated. I would expect this motor to push this boat around without breaking a sweat.
Any thoughts on what could be the problem here?
- Ken