force motor problems

[truckergary]

I have an 89 Force motor, 85 hp. I have rebuilt the carburetors, put in new plugs, changed fuel and motor is still hard starting and tries to, but will not rev up over 2000 rpms. It runs on the warm up cycle, but a lot of times when you idle down to put it into gear it dies. Any ideas on what this could be? Thank you.

 

[roscoe]

Re: force motor problems

Welcome trucker.<br /><br />Could be fuel, spark, or compression.<br /><br />Gonna have to narrow it down a bit.<br /><br />Check for spark on each plug.<br />Examine the plugs, do they look similar? Or is one cleaner or dirtier?<br /><br />Do a compression test, gonna need a gauge. $25 at most auto parts stores, or maybe you can rent or borrow one.<br /><br />Is the choke solenoid operating?

 

[truckergary]

Re: force motor problems

have checked the compression 120 each cylinder have put in new plugs have taken them out after running they all look the same choke is operating like it should seems to flood out before it fires up then runs but when ya try to open it up sounds to be missin and will not get over 2000 rpm some times you can see the tac coming up some and then goes back down took it out yesterday and seem if ya try to open it up it acts like it is trying to rev up but won't

 

[truckergary]

Re: force motor problems

this motor has set 2 yrs guy i bought it from said it run bad but have had it to the shop twice he keeps telling me it is a fuel problen but i am begining to think he is wrong it acts up more when ya get it in the water and put a load on it sometimes it runs good at first then when it warms up after a bit start to get more slugish

 

[Barbee Q]

Re: force motor problems

I would Check your fuel line.. Better yet, if it is hasn't been replaced in 2 yrs and it has a primer bulb, It maybe sucking air, cuasing line to restrict or starve. It will only restrict when excellerated and the motor stops or stumble, idles OK. It idles OK until the throttle is used..Right ; This is what was wrong with mine and I replaced the line and that solved my problem.

 

[truckergary]

Re: force motor problems

had it to the shop yerterday again he checked and checked had him cratchin his head seams to think now one of the cd boxes are bad or the stator tried to switch boxes and it looks like it has been done before some wires jad been spliced in behind it i just bought this boat which i though i had a good deal but might turn into an expensive one before i am thru motor is on a 89 spectrum boat which is in good shape but still should be able to get over 2000 rpm he was going to take it to lake yerterday afternoon and leave on trailor and put it in a load and do some more checking it seem to run ok till it gets warmed up allmost like something is breakin down am going today to check what he found out in test will keep you posted