ccrogue14
29-10-2014, 02:00 PM
Engine: 1976 Johnson 70HP
A few days ago my boys took the boat out fishing and ran out of petrol on the water. They had some backup fuel with them, but not enough, so they decided to add some bottled water to the fuel tank and mix it with the remaining fuel/oil (not smart).
Ofcourse that didnt work and the engine didnt start. Eventually they got towed to shore and brought the boat home.
I drained the fuel tank completely and added fresh fuel/oil, removed the plugs and dried them out - then the engine started and was idling like before. I tried reving the engine up whilst in Neutral and it revs fine.
I then though everything was fine so I took the boat back to the water to test it.
Engine started fine and was idiling without any issues, so I put it into gear and kept the revs as low as possible. The engine was running ok.
I then applied throttle a bit more and the engine died. I tested it a few more times, the same thing happened.
I brought the boat home and removed the entire carby (including the float sump), cleaned it (although it was already quite clean) and dried it with an air pressure gun. I cleaned and dried all fuel hosing. Assembled everything back, but the same issue occured.
What else should I be looking at? Am I missing something?
Please HELP!
A few days ago my boys took the boat out fishing and ran out of petrol on the water. They had some backup fuel with them, but not enough, so they decided to add some bottled water to the fuel tank and mix it with the remaining fuel/oil (not smart).
Ofcourse that didnt work and the engine didnt start. Eventually they got towed to shore and brought the boat home.
I drained the fuel tank completely and added fresh fuel/oil, removed the plugs and dried them out - then the engine started and was idling like before. I tried reving the engine up whilst in Neutral and it revs fine.
I then though everything was fine so I took the boat back to the water to test it.
Engine started fine and was idiling without any issues, so I put it into gear and kept the revs as low as possible. The engine was running ok.
I then applied throttle a bit more and the engine died. I tested it a few more times, the same thing happened.
I brought the boat home and removed the entire carby (including the float sump), cleaned it (although it was already quite clean) and dried it with an air pressure gun. I cleaned and dried all fuel hosing. Assembled everything back, but the same issue occured.
What else should I be looking at? Am I missing something?
Please HELP!