AFB accelerator pump check ball keeps sticking.

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MoparMike1974

MoparMike1974

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Im helping a friend with his AFB's (Edelbrock 600) accelerator pump issue. He had someone else pull it apart and found the check ball stuck. They installed new squirter nozzel and pump seal at this time. Everything worked good until a week later when he tried to start it again.
I pull the carb apart and find the check ball stuck again. Everything is clean and works fine for a little bit and then sticks again.
Is there a fix for this? What would happen if I take the brass weight out?
 
Last edited:
MoparMike1974 said:
Im helping a friend with his AFB's (Edelbrock 600) accelerator pump issue. He had someone else pull it apart and found the check ball stuck. They installed new squirter nozzel and pump seal at this time. Everything worked good until a week later when he tried to start it again.
I pull the carb apart and find the check ball stuck again. Everything is clean and works fine for a little bit and then sticks again.
Is there a fix for this? What would happen if I take the brass weight out?
Click to expand...

You may not believe it but a slightly larger ball will solve that.
If you take the brass weight out it may not seal the ball to the seat and the pump won't work near as well.
 
TrailBeast said:
You may not believe it but a slightly larger ball will solve that.
If you take the brass weight out it may not seal the ball to the seat and the pump won't work near as well.
Click to expand...
you might want to try to make sure the bigger ball is stainless steel, so maybe ethanol in the gas doesn't eat it up.
 
A larger ball is a lot simpler solution than laying hands on a tool to clean up / correct that seat. What are the odds that a correct angle stone would be found in a 4 dollar dremel kit? Grind that angle on a drill nose?
Professional carb reman' shop would use some type of tool to clean up the seat so the OEM ball fits and works. We do whatever we can with what we have to work with.
 
RedFish said:
A larger ball is a lot simpler solution than laying hands on a tool to clean up / correct that seat. What are the odds that a correct angle stone would be found in a 4 dollar dremel kit? Grind that angle on a drill nose?
Professional carb reman' shop would use some type of tool to clean up the seat so the OEM ball fits and works. We do whatever we can with what we have to work with.
Click to expand...

It's not so much the angle but the shoulder that the ball sits on.
Put a slightly larger ball in and tap it down on the seat a couple of times with a small flat nose punch and it should seat just fine.
I even did that once with a BB from my Son's BB gun, drove it for three years and then sold it to a friend that drove it 140 miles to work and back every day for 5 years after that.

Being as soft as BB's are I really didn't expect it to last a long time, but it did.
 
I was thinking of trying a larger ball in it. The one that is in there does look too small like its going too far into the seat. Waiting on a rebuild kit and im going to give it a full going over this time.
 
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