<VV> Rough Running

Mon Jun 13 18:07:01 EDT 2005

Speaking of vacuum leaks, I had a neat one the other day.  I am driving my 
Spyder along enjoying the nice weather when it just ups and dies.  I 
checked the fuel delivery.  I checked for spark at the plugs.  I did all 
the normal stuff and everything seemed fine, but the car would not 
start.  I decided either the Pertronix was weirded out or not all the plug 
wires were seated ... so before giving up (humiliating prospect) and 
calling a tow truck I decided to check the plug wires again ... and noticed 
the vacuum line from the distributor to the manifold was off.  It was 
cracked at the end so I cut off 1/4 inch, plugged it back on, and LO!  It 
started right up ...

sometimes it is the simple things :-(

BTW -- I did notice that it had been intermittently running rough the last 
few drives and I surmise that it was the crack in the hose.  Suppose I 
ought to break down and but a new hose :-) ?

More important to your problem ... although a vacuum leak does not cause 
flooding, it sure appeared like I had a flooding problem because I kept 
trying to start the car which kept pumping gas without burning it ... and 
the Spyder floods at the drop of a pin.  So it could be a vacuum leak 
causing your problem, even though it does not cause the flooding (e.g. the 
flooding could easily be a symptom of a vacuum leak).

At 01:39 PM 6/13/2005, you wrote:
>Vacuum leaks don't cause flooding (or drips). They cause a too-lean
>condition. I think you may have a choke/idle problem. Does the problem vary
>at all in connecting with whether the engine in cold or at operating
>temperature?
>
>Joe Potts
>Miami, Florida USA
>1966 Corsa coupe 140hp 4-speed with A/C
>
>-----Original Message-----
>From: virtualvairs-bounces at corvair.org
>[mailto:virtualvairs-bounces at corvair.org]On Behalf Of Mike Stillwell
>Sent: Monday, June 13, 2005 12:00 PM
>To: JKFG717 at aol.com; virtualvairs at corvair.org
>Cc: simpsonj at bellatlantic.net
>Subject: Re: <VV> Rough Running
>
>
>
>  This one really has me stumped. I did the carbs -
>twice - tripple clean on very good cores, new Clark's
>kits, checked the throttle plate seal, new stone
>filters, new choke pull-offs and vaccuum lines.
>  First time, it seemed to have a vaccuum leak on pass
>side (a drip every now and then, at idle). I replaced
>that carb bowl and the insulator - problem went away.
>Tuend it up and it great. Jim drove it and it was
>terrible - racing at idle, then no power in gear.
>  Several local gurus came over and tuned it, as I had
>tuned it when it was about 30 degrees outside. Seemed
>to be a choke adjustment issue. Also added lower
>shrouds and thermostats, which had been missing.
>  It has run well after each dose of attention from
>several sources, but then seems to fall apart. It
>seems to develop a vaccuum leak that allows it to
>flood.
>  Some off the wall things to consider... a hole in the
>balance tube? I replaced the rubber hoses on the
>balance tube. Bad modulator? I checked the rubber
>vaccuum modulator lines and they felt/looked fine. The
>vac. advance tested fine.
>  Any other ideas would be greatly appreciated. Reminds
>me of Funky's problem on Fast Vair with the '63. Just
>when you think you might know what you're doing with
>one of these cars...one comes along that just leaves
>you dumb-founded.
>
>  Mike
>  YS-117
>
>--- JKFG717 at aol.com wrote:
>
> > 66 110 Issues:
> >
> > We took our 66 110 Monza to a car show yesterday. It
> > has rebuilt carbs and a
> > Pertronix. Daytime temps in the low 90's. 30 miles
> > highway to the show. No
> > problems going at all. Car ran well the whole time.
> > Upon leaving it was hard to
> > start. It had been parked on a level surface all
> > day. Stalled out about 5
> > times. Ran as if it was stumbling, had to double
> > pedal, brake & gas, just to keep
> > it going. On the highway it felt weak. Leaving the
> > highway it was harder to
> > keep running. Went from stumbling, to smooth out, to
> > rough, stumbling, smooth,
> > etc.
> >
> > I don't know whether it's card related or ignition
> > or something else. Any
> > help would be appreciated. Jim CORSA, Group Corvair
>
>
>
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