94 Force 120 - increasing RPM in Neutral

[jake2008]

Hi All,

I have an issue with my 94 Force 120 and hope one of you may have some insight - engine starts easily, runs very well and idles fine however after a run in the boat at throttle and bringing the boat back to idle I have an issue.

When the throttle is reduced to low rpm it is fine and RPM comes back to 1000 however when put into neutral the RPM and engine accelerate up to aprox 3000.(does this only without load and out of gear) The engine does not sound healthy when this happens (not a smooth acceleration when this happens)

It does correct itself after putting it back in gear and running it at idle for a while and runs fine but the condition is getting more frequent and is but not a good situation.

I have pulled the cover and looked at obvious problems sticking throttle, cam in neutral position etc but it looks like everything is shifting back into neutral when commanded.

Thinking it might be something sticking in one of the carbs or ???

Any ideas or suggestions?

Thanks,
Jake

 

[further]

Re: 94 Force 120 - increasing RPM in Neutral

Jake,
RPM's in neutral should be between 1000-1100 and between 700-800 in forward gear. Sounds like you may have your idle speed set too high or the screw loosened and is out of adjustment.

 

[foodfisher]

Re: 94 Force 120 - increasing RPM in Neutral

+1

 

[jake2008]

Re: 94 Force 120 - increasing RPM in Neutral

Hi,
I had already adjusted the idle to the correct setting as you mentioned - and checked that all is tight. It still does the same thing and increases RPM in neutral after running the boat - once it has "fixed itself" after idling around a while or actually shutting the engine off the RPM's in neutral are 1000 and under load 700-800 as you had mentioned.

 

[jason32038]

Re: 94 Force 120 - increasing RPM in Neutral

Check the idle screw and make sure it's against the block when you put it in neutral. Make sure the trigger isnt sticky and preventing the linkage from returning to it's neutral position.