bluespeedball
Recruit
- Joined
- Sep 11, 2011
- Messages
- 5
Guys I apologize in advance for the stupid questions that I will be asking on the forum but I appreciate and and all help I can get. I purchased my first boat a month ago, a 1992 Alumaweld H56 with a Yamaha V4 115 Model C115TLRP. I purchased it from a widow whose husband bought it new in 2000. He passed away and it went to her son who also passed away. It has sat in a garage for the past 5 years and probably used less than 10 times. And for those of you that are thinking it No the boat isnt cursed......i think.
I brought it home and immediately drained the old gas out of the gas tank and filled with new 93 octane with the correct 50.1 ratio of Yamaha brand oil. I had a friend help me change the lower gear oil, installed new plugs and I paid someone to change the water pump as a preventive measure. I have to buy all 3 new batteries ( 1 start and 2 deep cycle for the 24v trolling motor. The boat it hardwired from the factory with circuit breakers instead of fuses. It has power tilt and trim and it does appear that someone has replaced the key switch at some point. That the history of the boat.
I have a healthy knowledge of automobile engines but very limited on my experience with boat motors. Heres my issue; the boat will not run above 2,000 rpm's with a severe stalling/ missing/ hesitation whatever your want to call it. It feels like at 2000 I have 1-2 coils that shut down. On my first test run I was just at idle making sure the boat didnt leak, that bilge pump and live well pump worked and things like that. I attempted to engage the throttle about 3/4 and it began to miss like I had lost a coil or two. I dont know what a two stroke suppose to sound like at idle, but this one sounds decent. While it was sputtering I began to play with the tilt and trim button and when I hit it, MAN it lit up and ran like it was being chased by the devil! Due to the sputtering I went back to idle and put it on the trailer.
I have read everywhere that these carbs will get junked up from sitting so I purchased two cans of spray seafoam and two can of mix. I mixed one can in a gallon of gas w/ oil and ran it at above idle through the engine. I poured the other can in the gas tank. I took apart the carbs and sprayed/ cleaned them but they were spotless on the inside. I decarb the boat with the other can as I have found instructed online. At this time I had a new trolling motor installed so i wasn't as afraid to get out in the water with it. I also tested all 4 coils to make sure ohms were within specs (yes I bought a v4 115hp manual). The coils were all within spec.
Today I took it out for the second time after the carb cleaning, decarb and coil test. Put it in the water and used choke, it started almost immediately. I put it in idle and eased out into the main channel. At this time I let the boat warm up for about 5 minutes. After this I started to engage the throttle a little more. Again at exactly 2,000 rpms the boat starts to sputter/ miss/ hesitate whatever you want to call it. I did fish this evening and on the way back decided to fully engage the throttle to see what would happen. I did and it started the missing immediately after 2,000 and wouldn't climb any higher. I remembered the trim/ tilt button and pressed it and she TOOK OFF! Im not talking about pressing and holding the button, but steady pressing the button every 1/2 second either up or down this boat is trying to come out of the water. After you release it she sputters and falls down below 2,000 rpms.
This boat is almost all stock, except for the key switch, trolling motor, batteries and fish finder. Im racking my brain here. If the coils were going out or bad, if the carb was dirty or gunked up the why is it running so well when I pressing the trim button. AND......why is the intermediate pressing off the button making the boat run like it should. This appears to me like a short in the wiring BUT what about the trim button and a short would IMPROVE performance? Shoudnt it decrease the performance? What should I look for in regards to the short, should I follow the trim power wires, inside the control box or something about the motor in the back? Should I ever be concerned about the coils or carb at this point.
I feel helpless that I have no further knowledge on this subject, I can do the work if Im just pointed in a direction to go in. I have spoken to two local boat mechanics that state the boat is probably just old. I have a lot of trust issues with shadetree mechanics, and the larger companies want to sell you another boat. I know this was a long post but if anyone could provide so help it would be so greatly appreciated.
i will respond quickly if anyone has any further questions or if I need to try something before we go any further.
Thanks
Robert
I brought it home and immediately drained the old gas out of the gas tank and filled with new 93 octane with the correct 50.1 ratio of Yamaha brand oil. I had a friend help me change the lower gear oil, installed new plugs and I paid someone to change the water pump as a preventive measure. I have to buy all 3 new batteries ( 1 start and 2 deep cycle for the 24v trolling motor. The boat it hardwired from the factory with circuit breakers instead of fuses. It has power tilt and trim and it does appear that someone has replaced the key switch at some point. That the history of the boat.
I have a healthy knowledge of automobile engines but very limited on my experience with boat motors. Heres my issue; the boat will not run above 2,000 rpm's with a severe stalling/ missing/ hesitation whatever your want to call it. It feels like at 2000 I have 1-2 coils that shut down. On my first test run I was just at idle making sure the boat didnt leak, that bilge pump and live well pump worked and things like that. I attempted to engage the throttle about 3/4 and it began to miss like I had lost a coil or two. I dont know what a two stroke suppose to sound like at idle, but this one sounds decent. While it was sputtering I began to play with the tilt and trim button and when I hit it, MAN it lit up and ran like it was being chased by the devil! Due to the sputtering I went back to idle and put it on the trailer.
I have read everywhere that these carbs will get junked up from sitting so I purchased two cans of spray seafoam and two can of mix. I mixed one can in a gallon of gas w/ oil and ran it at above idle through the engine. I poured the other can in the gas tank. I took apart the carbs and sprayed/ cleaned them but they were spotless on the inside. I decarb the boat with the other can as I have found instructed online. At this time I had a new trolling motor installed so i wasn't as afraid to get out in the water with it. I also tested all 4 coils to make sure ohms were within specs (yes I bought a v4 115hp manual). The coils were all within spec.
Today I took it out for the second time after the carb cleaning, decarb and coil test. Put it in the water and used choke, it started almost immediately. I put it in idle and eased out into the main channel. At this time I let the boat warm up for about 5 minutes. After this I started to engage the throttle a little more. Again at exactly 2,000 rpms the boat starts to sputter/ miss/ hesitate whatever you want to call it. I did fish this evening and on the way back decided to fully engage the throttle to see what would happen. I did and it started the missing immediately after 2,000 and wouldn't climb any higher. I remembered the trim/ tilt button and pressed it and she TOOK OFF! Im not talking about pressing and holding the button, but steady pressing the button every 1/2 second either up or down this boat is trying to come out of the water. After you release it she sputters and falls down below 2,000 rpms.
This boat is almost all stock, except for the key switch, trolling motor, batteries and fish finder. Im racking my brain here. If the coils were going out or bad, if the carb was dirty or gunked up the why is it running so well when I pressing the trim button. AND......why is the intermediate pressing off the button making the boat run like it should. This appears to me like a short in the wiring BUT what about the trim button and a short would IMPROVE performance? Shoudnt it decrease the performance? What should I look for in regards to the short, should I follow the trim power wires, inside the control box or something about the motor in the back? Should I ever be concerned about the coils or carb at this point.
I feel helpless that I have no further knowledge on this subject, I can do the work if Im just pointed in a direction to go in. I have spoken to two local boat mechanics that state the boat is probably just old. I have a lot of trust issues with shadetree mechanics, and the larger companies want to sell you another boat. I know this was a long post but if anyone could provide so help it would be so greatly appreciated.
i will respond quickly if anyone has any further questions or if I need to try something before we go any further.
Thanks
Robert