<VV> Choke Pull Off

[Sethracer at aol.com]

In a message dated 6/23/2007 1:55:17 PM Pacific Daylight Time,  
rudyandbrenda at sbcglobal.net writes:

Hi all,  need some help.  I have a 67 Monza 110/pg and the right (as your 
facing  the engine) choke pull off has a rattle sound when in gear and idleing.   
I thought the old one was bad so I replaced it and the new one does the same  
thing.  The left one is just fine. The rattle stops when you give it some  
throttle, but returns when you get back to idle.  At idle without being  in gear 
and higher rpms, it works great.  Just seem that this occurs at  low rpm.  
What do I need to do???  

Thanks for your help,

Rudy  Korb



What Matt was trying to say (in his shorthand) is that the rattle is pretty  
common on the Corvair motor. It probably does come from a pulsing in the 
intake  manifold, perhaps caused by valve adjustment? Have you pulled off one of 
the  vacuum lines that feed the pull-off and attached a vacuum gauge to  it?  If 
you do that and see pulsing - the indicator jumping back and forth,  pulsing 
is the issue. You mentioned that the other side isn't doing it. If you  have a 
bunch of tubing, try connecting the pull-offs to the port on the other  sides 
carbs. (I am suggesting this only for diagnostics- there are enough hoses  
and wires running around now.) See if the problem moves to the other carb. It  
should, if the pulsing vacuum is the cause.  This maay  sound strange but you 
could put another balance tube between the two carb  manifold vacuum ports and 
feed both chokes from it. I guess that would, at  least reduce the effect of 
the pulsing. - Seth



************************************** See what's free at http://www.aol.com.