Another Weber Question, Accelerator pump |
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Another Weber Question, Accelerator pump |
Borderline |
Apr 8 2007, 11:10 PM
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#1
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Senior Member Group: Members Posts: 720 Joined: 8-February 05 From: San Juan Bautista, CA Member No.: 3,577 Region Association: Northern California |
The other day when tuning my carbs I noticed that if I hold the throttle open to bring the revs up to about 2.5 -3K that there is gas dribbling out of each of the accelerator pump jets. I always thought that the accelerator pump should not put out any gas until you actually move the throttle plate and only put out a spirt to cover the transition. I hold the throttle as still as I can but there is still gas dribbling out of the jet and falling onto the butterfly.
Has anyone else noticed this? Is it normal? What causes it and how do I fix it if it needs fixin? I bought these carbs on ebay a couple years ago and they've been a royal PITA. Additional info: Weber 40's 45 idles 28 vents 120 mains F11 emulsion 45 accelerator jets thanks, (IMG:style_emoticons/default/dry.gif) |
SGB |
Apr 9 2007, 08:21 AM
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#2
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just visiting Group: Members Posts: 4,086 Joined: 8-March 03 From: Huntsville, AL Member No.: 404 Region Association: South East States |
Mine did this when too much goo built up on the little wheel that rides the throttle shaft - it rolls on a little cam between the two barrels- so that it was always just nudging the pump arm enough to cause the dribbles.
Float set too high can cause fuel to spill over the top of the bowl- you will see shiney liquid on top of the gasket in the little slot between the jet stacks. |
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