twin 125 Forces wont exceed 2800 rpm

[Kahrmar3912]

I took the maiden voyage on my 87 trophy yesterday and neither engine will exceed 2800 to 3000 and she pings with new (super) gas .

 

[RRitt]

Re: twin 125 Forces wont exceed 2800 rpm

are the props stock? do a decarb and then take compression readings. If both engines have good compression and are behaving identically then it narrows the range of probable suspects.

 

[Kahrmar3912]

Re: twin 125 Forces wont exceed 2800 rpm

could you walk me through a decarb i read about it last week but dont recall everything. I took her out last night adjusted air /mixture screw 50% improvement she went higher and up on plane . One engine still wont idle and appears to have a miss at low rpms. that miss dissapears at higher rpm although she still runs bad and pings.

 

[roscoe]

Re: twin 125 Forces wont exceed 2800 rpm

Decarb info:<br /><br /><br /> http://forums.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=36;t=000016

 

[WillyBWright]

Re: twin 125 Forces wont exceed 2800 rpm

What kind of speed are you getting? That low of RPMs probably wouldn't plane the boat. I wonder if the tachs may be calibrated wrong. Those motors prefer regular unleaded.

 

[Kahrmar3912]

Re: twin 125 Forces wont exceed 2800 rpm

Thanks guys i ordered decarb from marine supply.Upon futher investigation i found no spark<br />from 2cylinders I have no continuity from the leads coming from stator .I will replace stator . Blow out carbs and decarb my motor. If that doesnt work consider yourselves invited to a bayliner trophy with force motors SCUTTLING party location to be announced. Where is the best place to drill the hole?

 

[RRitt]

Re: twin 125 Forces wont exceed 2800 rpm

if you hunt for your stators outside of the marine world and in the automotive/industrial world then you will find the identical part for 1/3 of the cost. That's one of the nicer things about pre-1991 Force engines. Chrysler did all the engineering and set up all the contracts.

 

[Kahrmar3912]

Re: twin 125 Forces wont exceed 2800 rpm

I payed 135 for stator how painful is that compared to what i should have payed.

 

[Kajun37]

Re: twin 125 Forces wont exceed 2800 rpm

i just bought a brand spankin new CDI stator off ebay for $36...but usually they go for about $90 or so new...i got lucky

 

[Kahrmar3912]

Re: twin 125 Forces wont exceed 2800 rpm

motors now exceed 4000 they ran ok for about an hour. Now they wont continue running when i shift inti gear and they idle like ****

 

[Kahrmar3912]

Re: twin 125 Forces wont exceed 2800 rpm

How many ounces of oil in gas . I put 160z for 6 gal is that right she smokes like hell.