Force 50

[Chris_tucker]

Hi all, I need some help, I have force 50 that has fuel spark and good compression 135 each , carby been rebuild , but top cylinder seems to get to much fuel thus , no combustion , plug if clean . Running on one cylinder. Any ideas.

 

[jerryjerry05]

Welcome.
​Pull the carb and see if the reeds to the top cyl. are ok?

 

[Chris_tucker]

Reeds are good checked.

 

[Nordin]

Check the fuelpump diaphragm.
If damaged, one cylinder can get to much fuel.

 

[Chris_tucker]

Any idea where that's located? Thank for response

 

[Chris_tucker]

Thoughts , what if I disconnected fuel, line and spray bottle fuel in, might be good test of i can by pass pump, think it will work

 

[jerryjerry05]

Fuel pump is on the stbd. side.

It's operated by the vacuum of the engine as it cycles.

The pump operates off one of the cylinders(don't remember if it's the top or bottom).
A torn diaphragm would flood the cylinders.

Post pics of the pump side of the motor.