Weber Help

[tc-sacto]

Finally getting around to installing rebuilt carbs. ( Thanks Jimmy...Mobil Works)

I've been following these instructions, but have come to the end of my knowledge base....it was a short trip!

"STEP 1- Accelerator Pump Volume
Measure the accelerator pump volume at each of the 6 nozzles. Before starting the car, turn the key “on” and energize the fuel pump. Let the pump run a minute or so to fill up the float bowls. The air cleaners are off. Now, lower the vial down the throat of barrel No. 1 and park it directly under the nozzle. Have the assistant in the car depress the gas pedal all the way, nice and easy. Withdraw the vial, record the results on a piece of paper, and dump the contents of the vial. Repeat at each nozzle. (You may have to remove the velocity stacks for cylinders 2, 3 and 6 to gain proper access to the nozzles for those barrels.) Adjust the nut on the accelerator pump rod as necessary. Turning the adjuster nut out will increase the amount injected, and vica versa. You want .6 to .8cc (ml) (.75cc works great). Get them all even. "

I only get gas in barrel number one. None of the others.
1) What gives?
2)Also, do I turn the accelerator rod in or out to get more fuel?

Thnx
Tom

[Steve@Rennsport]

Tom,


1) You might have either plugged nozzles, plugged check valves under the nozzles or the passages are plugged with something.

2) Lengthen the stroke of the rod (move the jam nuts outward toward the end of the threaded shaft) for more fuel.

[tc-sacto]

Steve,
Thanks I'll give them a look. Althought that would suck since these a freshly rebuilt, I'd think there wouldn't be any plugs after a rebuild. Again thanks for the help.
Tom

[911quest]

The floats could also be stuck all the way up, causing no fuel flow into the bowls I take a piece of coat hanger 8-10 inchs long and carefully push the floats down thru the vents (the small tube next to the velocity stacks) with the fuel pump running you can hear the the float bowls fill up.

[Steve@Rennsport]

Originally Posted by tc-sacto

Steve,
Thanks I'll give them a look. Althought that would suck since these a freshly rebuilt, I'd think there wouldn't be any plugs after a rebuild. Again thanks for the help.
Tom

I've seen "freshly rebuilt" carbs with a lot of glass beads stuffed up where they shouldn't be.

For that reason, I do not use such medis for cleaning such parts and instead, use soda blasting that will not leave anything (its water soluble) in all those tiny passages.

If your rebuilder used glass beads to clean everything up, I would kindly suggest that you take the time to make sure that all the passages are clear.