96-70hp runs for hours & stops

[bdw]

motor runs great for maybe half a day or more then loses power, won't idle well and will only do about 3mph if you can get it past the stall point going into gear.

 

[rickdb1boat]

Re: 96-70hp runs for hours & stops

Hi DWB

Sounds like it's fuel related. Try filling your tank back up when this happens and see if it runs good again. I'm thinking there may be a problem with your in-tank fuel pick-up. You may have a crack toward the top of it(The pickup) and it becomes a problem by sucking air into the fuel line as the fuel level goes down. Are you running a built-in tank or portables?

 

[tashasdaddy]

Re: 96-70hp runs for hours & stops

are you getting any alarm? sounds like the overheat circuit is kicking in

 

[canadian_fisher]

Re: 96-70hp runs for hours & stops

A buddy of mine had a similar problem with his 50HP last year. It would run half the day and shut off.
In this case, we found 6 or more loose fuel connections around the intake, pump, and carb lines. Quick fix was to replace all the fuel connections with 1/4" tie-wraps.
Basically, he would loose prime and didn't think to pump the bulb hard again.

As for the 3mph, you could also only be running 1 or 2 cylinders until the airlock clears.

Just a thought.

CF

 

[bdw]

Re: 96-70hp runs for hours & stops

No overheat alarm, portable plastic tank but a large one, I think maybe 60 litres or thereabouts..
It does sound fuel related........is there a chance it may be power pack or stator??

thanks guys

brian

 

[rickdb1boat]

Re: 96-70hp runs for hours & stops

Not if it runs good for a half a day. Why not look into what we suggest? It may just work....At least pick up a 6 gallon tank and try it.

 

[bdw]

Re: 96-70hp runs for hours & stops

ok, admiral will do and thanks again.
Will let ya know how I make out..

regards

brian

 

[canadian_fisher]

Re: 96-70hp runs for hours & stops

Brian, any luck on a fix?

CF