Leaking Accelerator pump

[kspageddie]

If I had a gun I would put her in the ground!

I have been rebuilding my Autolite 1100s. I just rebuilt one, completly took it apart and cleaned it inside and out. Put the carb on the motor to test it out. Gas shoots out of the accelerator pump. I replaced it with another accelerator pump, same thing. Gas shoots out of it (darned near shot me in the eye).

I take the carb apart, clean it again and put it back together and BAM gas shoots straight in the air from the top of the accelerator pump. I changed pump covers, still does the samething. What else should I try?

Thanks in advance!

 

[addo]

Sounds like the passage between pump diaphragm and the venturi is blocked.

 

[kspageddie]

i cleaned the carb and sprayed out every passage..i thought

 

[kspageddie]

I am learning more about carbs each day so this may be a stupid question. Should here be fuel in the accelerator pump diapharm? Or does it use vacuum to push fuel out?

 

[addo]

There should be fuel on the far side. I really think the squirter nozzle's blocked.

 

[simon]

the pump nozzle can be cleaned with a piece of welding wire. flexible, yet stiff enough to remove any obstacles.
For one minute, forget about the absolute no-no to never prortrude carburetor orifices with pieces of wire.

Also, make sure the mating surfaces of the pump and cover are absolutely flat. I have a couple ones that were ruined when left-handed hobyyists warped them beyond repair by overtrorquing the bolts instead of changing out the leaky diaphragm

 

[kspageddie]

Thanks guys. I will use your suggestions tonite when I get home from work. Yes, I work Saturdays!

 

[kspageddie]

Success. I cleaned the carb and the squirter nozzle was blocked. So now it does not leak at the accelerator pump. I just started the car a few minutes ago. It is 11:30 pm here and the wife and kids don't understand the need to start the car in the garage late at nite, anyways...

It does not leak and the pump works fine. It idles at 3000 rpm however. I will work on that tomorrow. Must me a vacuum leak or the throttle linkage maybe out of wack. I will report my findings tomorrow. Thanks for all your input.