I'm not sure I've been clear about this motor. I'm not doubting anyone's suggestions, but I'm not understanding what the WOT rpms as it's running now has anything to do with it. All I know is the motor would push the boat 24MPH with my wife and I in it or 26MPH with only me. Now it struggles to...
I've got a small engine tach that I'm going to try this evening, it sits on the starter cover and picks up the magnetic field of the flywheel.
Not sure what knowing the rpms now is going to help though, the motor doesn't have enough power to reach max under a load.
Motor is a console steer and...
Entire fuel system has been cleaned and flushed by dealer, plus 2 new tanks is what cost me $300.
Not sure how debris made it past a 10 micron water separator and the screen on the motor, but that was the dealers excuse. Now he says "he's done all he can do".
I'm trying to get stuff together...
Oh, by the way, I'm not new to boats or outboards, just the newer 4-strokes and fuel injection. We live on a river in south Arkansas and our boats are daily transportation. I bought this motor hoping to not have to work on it weekly like I was doing the 30y/o Johnson it replaced.
My experience...
Yes, the motor was delivered with a 10 pitch prop. Until this started it ran right below the max rpms, so it's not overpropped.
Induction tach, I've tried three different ones and have yet to find one that will work on this motor.
Pulled the boat back out of the water , checked oil level, right on the full mark with motor level. Pulled the plugs, still white with a slight haze. Decided to put the old ones back in, motor would idle smooth, but when throttled up it would cut out and sometimes backfire. At times it would run...
Prop isn't spun, the motor never comes close to max rpms. Before when you got the boat on plane you could trim the motor slightly until it would cavitate and the overspeed alarm would sound. Now you have to trim up till it almost stops pulling before the alarm will sound, that tells me it is...
Hi folks! I had posted that I thought this motor was running on 2 out of 3 cyls. dealer says it's running on all 3.
A little history, a few weeks back I ran out of gas on one tank and switched to the other. After doing so the motor would almost plane the boat and then act like it was starving...
All three original plugs were identical in color. Dealer tech says the fuel pressure is 42#. They also said I have a total of 55.3 hours on it.
Going out of town for a few days, so won't pick the boat up till next week. I'll be sure to troubleshoot and find the problem before we start using it...
Took it back to the dealer, they say nothing is wrong with the motor. Uhh....it would push the boat 24mph one day and won't push it over 15 now, something is wrong. Sounds like I'm going to have to try to figure it out myself without voiding the warranty.
Hi all!
This motor is run daily during cooler weather and on rainy days since our home is by boat access only.
It's only been used a few times this summer. A few weeks ago I thought I ran out of gas in one tank, so I switched tanks and made it home. Motor was acting like it was starved for...
As others have said, on a pontoon boat you're going to burn a lot of gas above cruising speed. My 18' Bass Buggy with a 40hp Tohatsu 4 stroke sips gas below 4K, but at WOT it burns probably three times as much with very little increase in speed.
I ran into something similar on a '90 model 48 SPL. Mine cracked the crown on a piston and I bought another power head from the same year motor that had a bad crank to get a piston. One had the smaller cutouts and the other had the larger. Had to use both, but noticed no difference in performance.
Hi all! My pontoon remains in the water year round, it is used as a daily driver during good weather and a cargo hauler the rest. Of course I have problems with algae growth. I've been considering cleaning the toons well and coating the lower half with antifouling paint.
Has anyone here tried...
Hi all, been a while. Trying to get back to my project daily driver. When I had it in the water last summer the 3.0 was somewhat noisy, sorta sounded like piston slap. I suspect that the ski boat it came from sunk before I got it, I've found too much that points to being under water.
I have...
At the park where I work we have 5 2017 15HP Merc 4stroke outboards. These motors are rentals and only have 20-50 hours on them.
The problem we are having is the tiller shift, you turn the throttle one way for forward and the other for reverse, they are getting very hard to put in reverse. All...
Finally back to my daily commuter project, didn't have much choice, pontoon's in the shop getting a new motor and the lower unit blew on my small cab boat.
Not sure how I got the core back in the lower shift cable, but I can barely move it now. Therefore shifting is difficult at best.
What's...
