[BMWCSRegistry] No acceleration chug a chug

[SPANLAB]

Tom, thanks for getting back on this issue. I have run a volume check 
on the Accelerator pumps and they are putting in less fuel than 
acceptable. Books states 1.1 - 1.4cc, I am getting around 0.8cc on 
both carbs. I installed new rubber seals on both pumps but output is 
still low. Book tells something about sealing holes on the pumps but 
mine are all steel and rubber with no little holes to fill or 
correct. How can I increase Accelerator pump output?

Thank again, Enrique


At 09:13 AM 06/22/2007, TomasAlv at aol.com wrote:
>Enrique,
>Two possible areas to look at:  1.  Are the accelerator pumps 
>working on your carbs? It could be that when you press down on the 
>gas the accelerator pumps don't add enough gas to cover the sudden 
>increase in air and you have a lean condition until the main 
>venturi's pull enough fuel into the carburetors.  2.  Yor recently 
>talked about not getting a distributor with your coupe.  Check the 
>settings of the distributor you installed to make sure you have 
>proper vacuum advance and/or initial advance to keep from getting 
>the bogging you are experiencing.  If you are not using vacuumn 
>advance you may want to run the engine up to about 2500 RPM and set 
>the timing to total advance speciified in the manual.  You may have 
>to play with that a bit.  I hope that helps.
>Tom Alves
>
>
>
>
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