bowhunter71
Seaman Apprentice
- Joined
- Apr 17, 2006
- Messages
- 39
I have a 78 Johnson 70 HP.I just got it about a month ago.The first trip to the lake was trouble free the motor ran great.The second trip was not as good.The motor started fine backed it off the trailer and motored over to the boat dock and it stalled out and would not start.It acted like a fuel problem so I checked the primer bulb it was still hard so I checked the fuel lines and found that there was a small leak in one of the lines going to one of the carbs.So I replaced all the fuel lines on the engine and it still would not start.I gave it a little shot of starting fluid and it fired right up.I figured that carbs were probably gummed up so I took it home and took the drain plugs off the carb bowls but nothing came out.I then pulled the carbs.All three of them were spotless inside and the floats were fine but the float needles were stuck on all three carbs.I pulled them out and they looked fine I then put them back in and put everything back together. I Hooked the fuel line up gave it a couple pumps and walla she fired right up.I let it run for a few minutes and no problems.I Took it to another lake and everything went fine.So I figured that me or my father when we hooked the fuel line up the other day that one of us pumped it up to much and the floats pushed the needles tight into their seats.But tonight I went back to the lake where I had the troubles and It did it again same thing the float needles were stuck.I took the carbs apart again and pulled the needles loose and put it back together.It fired right up and ran fine all evening. The only thing I can come up with is that maybe it is the travel to that lake that causes it to happen because it is a real bumpy ride to this lake.Could it be the 2 cycle oil I am running or the mixture.Or maybe the needle tips are bad and I can not tell by just looking at them.If anyone has any ideas let me know<br />Thanks,Jeff