<VV> 1964 Corvair Monza 2-door coupe 95 hp automatic powerglide

[Jim Becker]

Reread my first comment.

How quickly a plugged vent causes a problem will probably vary with how full 
the gas tank is.

-----Original Message----- 
From: Hugo Miller via VirtualVairs
Sent: Saturday, October 05, 2019 1:31 PM
To: virtualvairs at corvair.org
Subject: Re:  1964 Corvair Monza 2-door coupe 95 hp automatic powerglide

It's actually only one problem - a blocked fuel vent. You could try
strapping a gas can to the trunk with a syphon feed to the carburettors
- that eliminates the entire fuel system. Although I agree this sounds
more like coil or condenser, as I would expect it to run quite a
distance with a blocked fuel vent before it started starving.

On 2019-10-05 18:53, Jim Becker via VirtualVairs wrote:
> Although it will not determine the exact problem, a simple fuel
> pressure measurement while it is acting up will isolate the problem
> down to a very small list of possibilities that includes both Bob's
> collapsed fuel line and Hugo's tank vent problem.  Finding adequate
> fuel pressure would eliminate both possibilities.
>
> (I'd still start with swapping out the coil and condenser.)
>
> Jim Becker
>
> -----Original Message----- From: Robert Marlow, Vairtec Corporation
> via VirtualVairs
> Sent: Friday, October 04, 2019 10:43 PM
> To: virtualvairs at corvair.org
> Subject: Re:  1964 Corvair Monza 2-door coupe 95 hp automatic powerglide
>
> Mike, my Rampside suffered similarly a few years back and it was
> hair-pulling trying to find the cause.  Finally, Larry Claypool
> identifed it:  The rubber fuel hose connecting the tank to the steel
> fuel line was collapsing internally.  When allowed to rest, it would
> open up again and the truck would restart.  A new ethanol-resistant hose
> fixed the problem.
>
> Now, I am not saying with certainty this this is what is happening to
> your car, but it's worth checking out.
>
> --Bob
>
> On 10/4/2019 2:25 PM, Mike Dick via VirtualVairs wrote:
>> I bought this car from a lady whose boyfriend tinkered with it but it 
>> barely ran. I replaced the gas tank, put the two rebuilt carbs on, new 
>> plugs, points, distributor cap and wires, rotor, and changed the oil. I 
>> put some Union 76  fuel (91 octane) in it and she fired up and sounded 
>> good. Put the timing light on it and set the timing. Took it out for a 
>> spin and it sounded, and ran great....for about two miles. The motor 
>> starting sputtering, like it was starving for fuel, it backfired twice, 
>> and was cutting out real bad. I pulled over and checked the motor. 
>> Everything looked good, nothing unusual. I let it sit for about a half 
>> hour then restarted it and it fired right up and sounded good. Drove off 
>> and was okay for about a mile then started doing the same thing again. I 
>> got it home safely and parked it for a couple hours. I restarted it and 
>> let it idle in my driveway for about a half an hour and there was no 
>> issues with it. I'm reluctant to take it back out for another drive until 
>> I c
>>   an figure out what is going on with it. I'm not much of a mechanic. I 
>> got this car because I'm a 62 year old guy that used to have one of these 
>> when I was a kid. My 16 year old grandson lives with me and he and I have 
>> been working on this thing together and I want him to have it when we get 
>> done with it. Could the distributor vacuum be causing this to happen? I 
>> didn't replace it but replaced the hose to the right carb. Vapor lock? 
>> Trying to understand why the sputtering and spitting only happens after 
>> the engine gets hot. Maybe electrical and not fuel related? Looking for 
>> direction as to what I need to look at. Maybe the coil? I sure would 
>> appreciate any help you can offer. Thank you in advance. Mike Dick
>>
>>
>
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