1976 45hp Chrysler

[JRBlome]

I tried to start the motor after it has been sitting for a couple years and it started running gas out by the lower unit where it bolts on. Why? The carb was rebuilt before I tried starting it.

 

[WillyBWright]

Re: 1976 45hp Chrysler

Carb overflow usually comes out the throat unless the motor is tucked way way down. I'm betting you have a torn diaphragm in your fuel pump. Kits are fairly cheap. You'll do a little cusing getting it back together with the springs. A putty knife holding things in place helps.

 

[zoltang]

Re: 1976 45hp Chrysler

this is sorta simalir to the problem i have(same motor), but mine will turn on fine but after running it a while it wont turn back on, theres a fuel over flow and gas is leaking from lower unit only when motor is in water. is this the same situation?

 

[eurolarva]

Re: 1976 45hp Chrysler

When it was running was it running good and how long did it run?

 

[zoltang]

Re: 1976 45hp Chrysler

eurolarva, if your talking to me then it ran very well no problems what so ever until we shut it off.

 

[JRBlome]

Re: 1976 45hp Chrysler

When it was running was it running good and how long did it run?

It fired but did not run.

 

[JRBlome]

Re: 1976 45hp Chrysler

Carb overflow usually comes out the throat unless the motor is tucked way way down. I'm betting you have a torn diaphragm in your fuel pump. Kits are fairly cheap. You'll do a little cusing getting it back together with the springs. A putty knife holding things in place helps.

I did take off the fuel pump cover and the rubber is ripped. But would this allow fuel to run to the inside and down into the lower unit bolts?

 

[WillyBWright]

Re: 1976 45hp Chrysler

Yes. On one side of the diaphragm is gas. On the other side there are pulses coming from the crankcase. Gas will leak thru that diaphragm into the crankcase and into the cylinders where it will drip down into the top of the gearcase before eventually finding the floor.