1980 something 85 hp johnson powershift 2 wont start in water

[CDMONEY20]

I have a Johnson 85 hp powershift 2 (1980 something) I can start the motor out of the water with no problems (I only run it a sec but it runs well) When I put it in water it doesnt start as well or at all. If I do get it running and warmed up it seems to start (not to well but it will). What could cause this?

 

[OBJ]

Re: 1980 something 85 hp johnson powershift 2 wont start in water

Backpressure CD....<br /><br />Out of the water there is no backpressure against the cylinders. In the water there is. <br /><br />Would like to know the year. If you will post the model number, we can tell you the correct year.<br /><br />Is this a new problem or have you just gotten the engine?

 

[ezeke]

Re: 1980 something 85 hp johnson powershift 2 wont start in water

Try a larger, more powerful battery. <br />You should not start your motor dry, it will burn up the water pump impeller in seconds.

 

[CDMONEY20]

Re: 1980 something 85 hp johnson powershift 2 wont start in water

Hey guys I tried the bigger bat. and it didnt work so the guy I'm havin work on it said it was prolly a timer something or another. As you can see im not fluent to outboards yet. Anyways if he cant fix it ill be back for more help. Thanx