<VV> muffler sound

[kovacsmj]

 Bob, you were close to the solution. I solved one problem. Using the
hand choke on the carb trick, I choked the left one and quite soon the
engine stalled. Doing the same to the right one, It kept running poorly
with a loud sucking sound from the rear of that carb. Upon removal, I
found the idle vent valve rubber had split and was allowing air to enter
the carb at the base, under all conditions. Replacing that rubber valve
cured that problem and the vacuum to the vacuum advance is now only
negligible. I still stalls when put into gear. 

 

 The secondary carbs apparently had no impact on the operation when I
choked them by hand. They were not sucking any measurable amount of air.

 

Getting all the information is most of the solution.

 

MIKE KOVACS

 

-----Original Message-----
From: BobHelt at aol.com [mailto:BobHelt at aol.com] 
Sent: Sunday, July 03, 2005 12:00 PM
To: kovacsmj at sbcglobal.net; virtualvairs at corvair.org
Subject: Re: <VV> muffler sound

 

In a message dated 7/3/05 7:42:06 AM US Mountain Standard Time,
kovacsmj at sbcglobal.net writes:




Another
interesting symptom is that when warm, the engine will really bog down
(900 RPM idle in neutral, timing at about 16 degrees without vacuum
advance, about 20 degrees with vacuum advance hooked up.) and
stumble/stall when dropped into gear (PG).



Mike, 
The vacuum advance should not affect the timing at an idle speed. either
you have the VA vacuum hooked to the wrong carb port, or the carb
throttle plate is cracked at idle to allow vac to get to the VA.
Regards,
Bob Helt