blindmullet
Cadet
- Joined
- Aug 21, 2007
- Messages
- 11
I have a '87 115etlh that has been sitting during a 4 year boat rebuild. I'm having problems getting over 3600-3900RPMs. The motor just bogs down and if I throttle back it runs great...about 20-25kts. I feel this is a fuel problem and I'm starting there. I rebuilt the carbs 4 years ago and cleaned them out again prior to running last week. I ordered a fuel pump and new hoses for the carbs. I'm going to remove the on motor "fuel filter" and just count on my 10micron external filter.
This is a new fuel system up to the motor...Tank, fuel, hose, filter, primer bulb....Compression numbers 128,126,126,122
So, I pulled the carbs again and looks like my floats are a little off. The manual says .5" from the gasket to the top of the float. Does this look right to you? Seems to be low, but is almost spot on...34/64th's or .531.
One other cause before I look at the ignition system--I don't use the yamaha gauges so I had to wire everything myself. Everything is hooked up correctly, but I didn't use the harness that sends the warning light/level for the oil gauge. I would imagine that this also controls the warning buzzer for the oil system? If it is going off I guess I wouldn't know at this point--I'm going to hook it up. I think it is just the yellow going into the accessory lead on the key switch. If the engine was going into protect mode the RPMS are 2000 and below right?
This is a new fuel system up to the motor...Tank, fuel, hose, filter, primer bulb....Compression numbers 128,126,126,122
So, I pulled the carbs again and looks like my floats are a little off. The manual says .5" from the gasket to the top of the float. Does this look right to you? Seems to be low, but is almost spot on...34/64th's or .531.
One other cause before I look at the ignition system--I don't use the yamaha gauges so I had to wire everything myself. Everything is hooked up correctly, but I didn't use the harness that sends the warning light/level for the oil gauge. I would imagine that this also controls the warning buzzer for the oil system? If it is going off I guess I wouldn't know at this point--I'm going to hook it up. I think it is just the yellow going into the accessory lead on the key switch. If the engine was going into protect mode the RPMS are 2000 and below right?