Loss of Power - Force 40 by mercury

[sambeau]

my force 40 is running well, however, I can not get the engine to move to full power / throttle.

We've had the outboard for 6 years & it was running well until last week. We had it running at high throttle & it slowed to about 10 mph by itself - with the throttle in the same position. Since then, that is the top speed of the motor. I can't even get the engine to rev high while using the throttle control.

I am able to rev the engine by moving the control myself with the cover off. I've tried new plugs, new gas, checking the gas line.

Again - the engine sounds good actually - it just has no power! Any sugestions?
Sam

 

[sambeau]

Re: Loss of Power - Force 40 by mercury

OK - now the motor won't start at all. I had it out 3 times today - everything was fine (still had no power - as I originally posted). I went to take it out for evening fishing & it wouldn't start at all. It was getting gas, plugs are new, battery was charged last night. I'm frustrated! Help!

 

[sambeau]

Re: Loss of Power - Force 40 by mercury

It is sounding like it wants to start, however, it just doesn't turn over.

 

[dsinger]

Re: Loss of Power - Force 40 by mercury

Do you have any spark

 

[dsinger]

Re: Loss of Power - Force 40 by mercury

Be careful or water slipage

 

[sambeau]

Re: Loss of Power - Force 40 by mercury

How can I tell if it is sparking? Sorry - I'm new at trying to fix this motor - it's never given me a problem.

 

[Plainsman]

Re: Loss of Power - Force 40 by mercury

You can get a inline spark tester here:

http://www.iboats.com/mall/index.cg...=989479448&list_time=1151807146&view_id=47434

Or just do a search for one.

 

[79Merc140]

Re: Loss of Power - Force 40 by mercury

Go to the Chrysler/Force page as this motor is NOT a Mercury.

Craig