1st post.
Greetings forums!
I'm hoping the Gods of the iboat forums can shine down on me and my Mercury 115. Where to begin....
I've had a rough few last months with this boat and motor. Took it on a fishing trip in September and everything started out great. Ended the trip needing to replace the starting gear and having to pull start a 115. We got good at it. We get that replaced and noticed some chunks of magnet hanging onto parts of the motor. Come to find out a chunk on the flywheel magnet was missing. Purchased a new flywheel and installed without a hitch. Boat starts up and runs fine, but here's where the problems start. We take it out on the water and go to get it on plane. It gets stuck at 3000 RPMs. You punch the throttle down and it's the same. Stuck at 3000. Back off and push back down, it's stuck at 3000. Brought the boat in and it was low on gas. We topped it off with high octane fuel (Which we always put in) took it back to the water and same results. Today we started replacing parts. We put a new fuel filter in that was pretty gummed up. I broke a wire on one of the spark plug connector so we decided to put in new plugs and wires which it needed. We took it out to the water today and got different results. At first I took down one side of the lake and it as stuck at 3000 RPMs. I turn it around and try to goose the throttle. As I'm doing it it starts to jump a little and takes off. Turn around again and try to take off and by a mix of goosing the throttle and backing off completely and pushing back down we got it up on plane. Was able to get it on plane by goosing the throttle several times. I would say it has to get up to 4000 to 4500 to go fast enough to get on plane. This is a two stroke engine and I don't know much about motors, but I would describe it as the "Power Band" on a dirt bike not kicking or it kicking in and out. We checked the throttle cable and all appears well here. If the boat is not in water and on rabbit ears we can throttle it up to red line. I know you're not supposed to do this, but I put it in gear on land with the ears on and was able to throttle it over 3500 RPMs for a second before backing off. The boat sounds fine and starts up fine. It's cold blooded as any older non-fuel injected motor and take a minute to start. Once it gets going its runs fine. The motor sounds good at idle. No alarm going off. Any help on this would be appreciated.
What we've done:
Starting Pinon gear
Flywheel
Fuel Filter
Primer Ball
New Fuel
New Plugs
New Wires
Tested with rabbit ears is OK when not under torque
Used carb cleaner and sprayed into running motor
Verified the throttle cable is not stretched
Getting oil in fuel. Noticed this when we changed out the spark plugs.
Boat is a Nitro 700Lx 98 Hull
Motor is a 1995 2 stroke Oil injected Mercury 115
Thank you!
Greetings forums!
I'm hoping the Gods of the iboat forums can shine down on me and my Mercury 115. Where to begin....
I've had a rough few last months with this boat and motor. Took it on a fishing trip in September and everything started out great. Ended the trip needing to replace the starting gear and having to pull start a 115. We got good at it. We get that replaced and noticed some chunks of magnet hanging onto parts of the motor. Come to find out a chunk on the flywheel magnet was missing. Purchased a new flywheel and installed without a hitch. Boat starts up and runs fine, but here's where the problems start. We take it out on the water and go to get it on plane. It gets stuck at 3000 RPMs. You punch the throttle down and it's the same. Stuck at 3000. Back off and push back down, it's stuck at 3000. Brought the boat in and it was low on gas. We topped it off with high octane fuel (Which we always put in) took it back to the water and same results. Today we started replacing parts. We put a new fuel filter in that was pretty gummed up. I broke a wire on one of the spark plug connector so we decided to put in new plugs and wires which it needed. We took it out to the water today and got different results. At first I took down one side of the lake and it as stuck at 3000 RPMs. I turn it around and try to goose the throttle. As I'm doing it it starts to jump a little and takes off. Turn around again and try to take off and by a mix of goosing the throttle and backing off completely and pushing back down we got it up on plane. Was able to get it on plane by goosing the throttle several times. I would say it has to get up to 4000 to 4500 to go fast enough to get on plane. This is a two stroke engine and I don't know much about motors, but I would describe it as the "Power Band" on a dirt bike not kicking or it kicking in and out. We checked the throttle cable and all appears well here. If the boat is not in water and on rabbit ears we can throttle it up to red line. I know you're not supposed to do this, but I put it in gear on land with the ears on and was able to throttle it over 3500 RPMs for a second before backing off. The boat sounds fine and starts up fine. It's cold blooded as any older non-fuel injected motor and take a minute to start. Once it gets going its runs fine. The motor sounds good at idle. No alarm going off. Any help on this would be appreciated.
What we've done:
Starting Pinon gear
Flywheel
Fuel Filter
Primer Ball
New Fuel
New Plugs
New Wires
Tested with rabbit ears is OK when not under torque
Used carb cleaner and sprayed into running motor
Verified the throttle cable is not stretched
Getting oil in fuel. Noticed this when we changed out the spark plugs.
Boat is a Nitro 700Lx 98 Hull
Motor is a 1995 2 stroke Oil injected Mercury 115
Thank you!
