I am running a 35hp longtail. A few days ago I was coming out from a morning of duck hunting and the motor kept turning off every time the motor it would bog down and need more power. It would run fine out of the water but once you put the prop back in the water it would cut out. I have checked the calibrator and the coils and there does not seem to be an issue with any of them. Any other ideas of what could be causing this issue?

Not getting a enoungh gas u have you done any mods to it

Vent the gas tank. Or air getting into fuel system. Those are easy checks.

Could be running on one cylinder due to flashover (loosing spark from the boot to the metal air dam where the plug boot goes through the hole)

Ya I had one only run on cylinder one time do to a bad spark plug easy way to check that is touch the header pipes if one side is hot and the other side is not you know it's only run on one cylinder

Sound like something to do with the fuel

I have had the same issue, bent push rod, ran fine as long as it didn't get in a bind
( which also means running on 1 cylinder but still was firing)

Not mods have been done to motor. I have checked all fuel lines, carburetor, plugs, plug wires. While motor is running I pulled each side of plug wires and motor does not cut out so I do t think it could be a bad coil. One side of the header pipes is a lot warmer than the other side. If it does have a bad cylinder how can that be fixed. Keep in mind I am no mechanic. Is it something I can fix?

Say it idles good but when you put it in the water and give it gas it chokes dead

You got a tiny tach on it

It idles great. When prop is out of water you would never know anything was wrong even running wide open. When prop is in the water it is run with just a little gas but when you go to run it half throttle it cuts out.

How low you got it idle

I've had one do that to me before one time when I put a cold air intack on and one time had it idle to low

both times it was not getting enough gas

next time it starts to bog down pull the choke out a little, not all the way just a 1/4 pull. IF it clears up and gains rpm you have a slight clog in the high speed jet. Another issue it could be is the stator, motor will run fine until load is put on it.

Rods have been checked and seem to be working good. Had a compression test done one cylinder tested 130 and the other was 110. Is that enough of a difference to be lossing power?

Have you check the valve lash yet

The problem was in the carburetor. There was trash in the gas and jets were clogged.

Glad u got it fix bud put ya a good fuel filter on it and that keep it from getting trash in the carb