BeaterSkeeter
Cadet
- Joined
- Aug 14, 2012
- Messages
- 14
I recently purchased a skeeter bass boat with an 84 Johnson 115 V4 VRO on it. First time out it ran great. Yesterday, put it in, it ran great for a bit then would not rev out under full throttle. Put it in nuetral you could rev it out. In forward it felt like there was a load or restriction keeping it from revving out. I discovered a broken skeg and a large ding in the prop upon pulling it out of the water, but the prop turns over fine by hand. I tested the cylinders and got 105 for 1,2,3 and 65 for cylinder four. Can the problem be in the lower unit? I plan on seeing if the low psi if from a stuck ring. Im going to lube it and see what happens. Then pull the head if that doesnt help and probably replace the rings. But im still stuck on why the motor wouldn't rev out. What can be damaged in the lower unit that would cause that? Thanks!
update: lubed cylinder 4 over night. gained almost 10 psi on so we're up to about 75. still a bit off from that 15% number they want you to be at. I removed an inline fuel filter to make sure it wasn't a fuel restriction. I cleaned the fuel filter on the motor. I also fogged the motor with Mercury PowerTune and let it sit for a couple hours. Motor ran fine in gear with the muffs on it. We trolled out to a spot in the lake and started it up. It smoked like a chimney as expected. I put it into gear and it seemed like it wanted to go for a brief bit and just as it seemed like it was gonna rev and get towards plane, same thing, pedal to the floor with no power. Seems like a fuel or ignition problem but wtf? it ran fine just a week ago and now this. I'm at a loss. Please help. I am mechanically competent, just not used to working on marine motors but have a background in 2-stroke motorcycle engines. Towards the end of the run when I was trying to clean out the powertune it started sputtering. Seemed like the plugs were loaded up or fouled maybe from carbon. But I'm still stuck on why it will rev fine when out of the water or neutral then not so good when in the water on load. I was thinking about breaking out the multi-meter and coil/spark checker but I doubt it's the coils. Supposedly the plug wires and plugs were relatively new prior to purchase.
I literally picked this boat up two weeks ago and I'm trying not to start shopping for a new motor already. Any and all help is greatly appreciated. If anyone is a marine mechanic in the north jersey area let me know. I live between greenwood lake and hopatcong areas in Wayne. Thanks in advance to anyone that helps. It's much appreciated.
update: lubed cylinder 4 over night. gained almost 10 psi on so we're up to about 75. still a bit off from that 15% number they want you to be at. I removed an inline fuel filter to make sure it wasn't a fuel restriction. I cleaned the fuel filter on the motor. I also fogged the motor with Mercury PowerTune and let it sit for a couple hours. Motor ran fine in gear with the muffs on it. We trolled out to a spot in the lake and started it up. It smoked like a chimney as expected. I put it into gear and it seemed like it wanted to go for a brief bit and just as it seemed like it was gonna rev and get towards plane, same thing, pedal to the floor with no power. Seems like a fuel or ignition problem but wtf? it ran fine just a week ago and now this. I'm at a loss. Please help. I am mechanically competent, just not used to working on marine motors but have a background in 2-stroke motorcycle engines. Towards the end of the run when I was trying to clean out the powertune it started sputtering. Seemed like the plugs were loaded up or fouled maybe from carbon. But I'm still stuck on why it will rev fine when out of the water or neutral then not so good when in the water on load. I was thinking about breaking out the multi-meter and coil/spark checker but I doubt it's the coils. Supposedly the plug wires and plugs were relatively new prior to purchase.
I literally picked this boat up two weeks ago and I'm trying not to start shopping for a new motor already. Any and all help is greatly appreciated. If anyone is a marine mechanic in the north jersey area let me know. I live between greenwood lake and hopatcong areas in Wayne. Thanks in advance to anyone that helps. It's much appreciated.
