Hello everyone I have been sick over the last few weeks and haven?t been able to work on my boat motor. I had a life threatening blood clot in my leg. Somehow working on sick boat just doesn?t hold a candle to over my health. However, I was able to work on her some over the last few weeks.
I have WOT issues with my 85 hp, 88 year model force outboard. The motor idles fine, but put her in gear and give a little throttle and she misfires. Much has been done to correct the problem, and I?m running out of things to try.
First, I?ve used spark test lights to see if the motor is losing fire when the miss occurs, and it is firing. I think any electronic problem can be eliminated. A new stator was installed by a ?force mechanic? back in Feb. I question the validity of a new stator, as I don?t think my old one was bad. I?ll deal with that issue later. I?ve switched coils, switched C.D. modules and still the same thing, misfire. There is no loss of spark when the miss occurs. I?ve checked and cleaned the entire engine wiring harness connections (terminal block) just to CMA.
So that leaves one thing, fuel delivery system. First I started with clean tank fresh gas, new gas lines, and new primer bulb, no good. Then I replaced the fuel pump diaphragm, and gasket, still no good. Next I had the carbs cleaned and reeds checked and set while I had the carbs off, not. However, I did notice a leak at the gasket at the adapter plate and power head, which was blown out. I replaced it and put new silicone around the bottom of the adapter, took her out yesterday thinking that had to be the problem, but alas still misfiring. Any thoughts as to what I may have missed? The old man who worked on carbs just took them apart, blew carb cleaner and air through them as no new parts were installed. Was this adequate? Should I go back into the carbs and have them rebuilt and cleaned professionally with ultra-sound? (I have a repair shop in my area that uses ultra sound to clean their rebuilds). Bottom line is I still have a misfiring motor that no one around here want?s to work on. I need help. Thanks to anyone with any suggestion/solutions.
I have WOT issues with my 85 hp, 88 year model force outboard. The motor idles fine, but put her in gear and give a little throttle and she misfires. Much has been done to correct the problem, and I?m running out of things to try.
First, I?ve used spark test lights to see if the motor is losing fire when the miss occurs, and it is firing. I think any electronic problem can be eliminated. A new stator was installed by a ?force mechanic? back in Feb. I question the validity of a new stator, as I don?t think my old one was bad. I?ll deal with that issue later. I?ve switched coils, switched C.D. modules and still the same thing, misfire. There is no loss of spark when the miss occurs. I?ve checked and cleaned the entire engine wiring harness connections (terminal block) just to CMA.
So that leaves one thing, fuel delivery system. First I started with clean tank fresh gas, new gas lines, and new primer bulb, no good. Then I replaced the fuel pump diaphragm, and gasket, still no good. Next I had the carbs cleaned and reeds checked and set while I had the carbs off, not. However, I did notice a leak at the gasket at the adapter plate and power head, which was blown out. I replaced it and put new silicone around the bottom of the adapter, took her out yesterday thinking that had to be the problem, but alas still misfiring. Any thoughts as to what I may have missed? The old man who worked on carbs just took them apart, blew carb cleaner and air through them as no new parts were installed. Was this adequate? Should I go back into the carbs and have them rebuilt and cleaned professionally with ultra-sound? (I have a repair shop in my area that uses ultra sound to clean their rebuilds). Bottom line is I still have a misfiring motor that no one around here want?s to work on. I need help. Thanks to anyone with any suggestion/solutions.
