Carb Help

[bobgag]

Just bought a 1985 Force 85. The engine is like brand new. I noticed they had cut the gas tank away from the boat and replaced it with a ball **** typy. I cannot get gas to flow to the engine. I can only get it to run right after the ball has been pumped up and it really never gets and stays hard it like the ball is just drained and no more gas flows. Can some one send me the specs on the fuel pump assembly. I think there are parts missing. Whay would i need a ball **** assembly when the motor has a fuel pump Also can someone send me the part number for the carb rebuild kit and where I can get them. Thanks all.

 

[jerryjerry05]

Re: Carb Help

Ballcock??? How about a pic.Jerry

 

[Frank Acampora]

Re: Carb Help

I think by "Ball-**** Thingy" You mean the priming bulb. Although these engines have a fuel pump, it is a diaphragm type which uses differential pressure of the crankcase to pump fuel. It does not have sufficient volume to fill all the carbs and the fuel line while cranking, so to prevent excessive cranking to deliver fuel, for the first start of the day, you must use the bulb to fill the carbs BEFORE starting.

Now, if the bulb does not stay hard or collapses, then you most likely have a clog somewhere between the tank and bulb. The bulb collapses because the fuel pump is sucking but fuel can not get to the primer bulb.

If the fuel line has a quick-connect, unscrew the male end and check for junk behind the check ball (hole in threaded end).

If the bulb does not collapse or get soft, then it is likely that the fuel pump needs a new diaphragm. A new diaphragm costs about 3 bucks and a new gasket is about 2.

The fuel pump body is held to the bypass cover with six slotted screws. Remove them and pop it off. Changing the diaphragm is a 5 to 10 minute job.

If these two things don't cure the problem, THEN clean the carbs. You don't need to rebuild them unless parts are worn, and WD40 does a remarkable job of cleaning.