Can this be true. I have a John Deere 165 lawn tractor with a FB460v BS00 Kawasaki engine. I pulled the gas line off the carb and stuck it in a plastic bottle. I saw a video in which this was done and as it was cranked, gas was pumped into the bottle verifying the fuel pump was good. Since my engine runs when I spray starter fluid into the carb, I bought a new fuel pump. It does not put out any fuel either. I want to know if I should try to look inside and see what is supposed to activate the pump. One recommendation was to put an electric pump Mr. Gasket - Fuel Pump #125. But my question is: I bought the new fuel pump, why doesn't it work?
Also, I have not tried the direct route this gentleman spoke of, it does not seem like a good idea though.
Thanks,
Dennis
There is a hose that connects the pump to the crank case,
It uses flucuating cracase pressure to alternatively blow then suck as the piston goes up & down to move the diaphragm and a one way valve makes the fuel go in one direction.
No 1 reason why they don't work = hooked up wrong
No 2 reason why they don't work = pulse line broken, loose or perforated.
No 3 reason why they don't work = air filter / outlet blocked
There are two connections on the side and one on the top.
The side ones are in & out the top one is the pulse line connection.
You can stick one end in yer gob then blow & suck.
It should pump fuel , a bit slow unless you can do it 10 time / second.
If you get a mouth full of fuel either you are sucking on te wrong line or the diaphram has a hole in it ( 4th most common )