<VV> 110 PG with rough idle and wanting to stall at stops

[J R Read_HML]

Did you replace the two rubber hoses in the main fuel line (one at each end) 
with modern ones?  Possibly one or both are beginning to disintegrate and 
putting junk in your carbs.  Did it feel as if it were running on only three 
cylinders at times?  That would be a real strong clue.

Later, JR

CCE CORSA CORVANANTICS SCG member
'61 Rampside Standard 4/110
'65 Monza Convertible 4/140
"Keep the Love Alive"

----- Original Message ----- 
From: "Stephen Upham" <contactsmu at sbcglobal.net>
To: "Virtual Vairs" <virtualvairs at corvair.org>
Sent: Saturday, September 19, 2009 10:49 PM
Subject: <VV> 110 PG with rough idle and wanting to stall at stops


>I developed a problem during a club out of town activity last
> weekend.  The Monza ran fine on the way down at highway speeds and
> after arriving, at town speeds.  I parked it on the town square for
> the show.  After the show was over it started and ran fine for about
> a mile and a half.  Then it started to experience a rough idle and
> wanted to die in drive.  I ran ok in neutral but I sensed that it
> wasn't 100%.  I was able to drive it back to Dallas without too much
> hassle except for the time I stopped for gas to check for leakage on
> the new oil pressure sensor/sender.  The old one began leaking, and I
> and some members had to replace it in the parking lot of the hotel.
> Fortunately, it wasn't raining at the time as it had been pretty much
> all day.  I drove back to Dallas in the rain which was moderate until
> the last fifty miles which were torrential.  I got a damp carpet on
> the driver's side from the high beam switch to the seat.  I
> disconnected the battery when I got home and fan dried the interior
> for two days.  Well, today I started it up again.  It took several
> tries to get it started.  After it warmed up, I checked the advance
> and it is where I have had it for the last five months at 24 BTDC.  I
> checked the rpm at idle and got about 900, fast, I know, but remember
> that it was dying in drive at stops, so a club member stepped up the
> idle.  In drive, the rpm drops to 600 and it begins to run very rough
> and the engine is vibrating to the stroke of the pistons.  It kept
> running, but again, very rough.  Almost everything on the engine that
> involves fuel or spark is less than seven thousand miles old and the
> carbs are about 500 miles old (fresh complete rebuilds).   It has a
> Petronix ignition.  One of the club members suggested the PCV may be
> loose (it is the kind of hose configuration found on the A/C cars),
> another suggested it might be water in the gas from a bad fill up,
> and the other club members were scratching their heads.  I need some
> advise as to what to check next.  I did think tonight to check the
> carbs for leaking venturi which I will do in the morning, and then
> maybe pull the plugs and see if there is anything I can glean from
> them.   What else should I look for?
>
> Stephen
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