Read your post here and you seemed like the guy to ask.

Have a quick question. Should the VOES on a 1994 Harley Fatboy with CV Keihin carb hold pressure when I put a vacuum gauge on it?? If so how much?
Checked mine quickly with a pump and it had no interest in holding any pressure.

Thanks,
Ron

 

Assuming you mean vacuum, it should hold 30 in-hg easy.. It should not leak. Make sure you tool is OK.

 

Yes vacuum, sorry typing stream of consciousness.

 

No problem. After all vacuum is only negative pressure to some reference pressure. In this case ambient.

 

If the VOES had a vacuum leak, would that not affect idle by disrupting the air/fuel ratio?

 

Nope, It would..

 

But it will affect idle speed because at idle the timing should be at full advance when switch is grounded...

 

Big James I'm kinda suspicious of my vacuum line from my diaphragm to carburetor collapsing after engine warms up and running at high speeds, I have a 2003 xl883c custom anniversary edition Harley Davidson sportster.
at high rpms the engine, head lights shuts all shut off the bike slows down backfires and comes back on. If I ease along it's all cool but when I build up high rpms it will shut down pop and spit out the carburetor come back on .I don't think it's the voes its self but the vacuum line collasping. well that's my story and I'm sticking to it

 

Does anyone know switch would be on my 2001 883? 4in 5 or 6. Having trouble finding this info?

 

4. Easily found with quick google search.