<VV> Fuel delivery question

[J R Read_HML]

Chris,

A couple of things come to mind.

1.  Modern gas formulas are tough on some rubber components.  See if the 
accelerator pump cap (made of [some kind of] rubber) has or is 
disintegrating/ed.

2.  On the choke, you simply be missing the upper portion - which screws to 
the lower portion through the hole in the shroud.

3.  (well more than a couple I guess)  How hot is the engine getting when it 
stalls.  You might be dealing with an over-heat situation - leading to vapor 
lock.

Later, JR

----- Original Message ----- 
From: "Chris" <vairchris at gmail.com>
To: <virtualvairs at corvair.org>
Sent: Saturday, April 19, 2008 3:16 PM
Subject: <VV> Fuel delivery question


> Sorry if this is a little long, but I want to be sure you give me the 
> right
> advice.
>
>
>
> My vehicle is a 61 Rampie with a 62 80 HP engine and 63 carbs (Special
> thanks to Grant Young for helping me figure all that out).  On the left 
> hand
> side, the choke rod is broken off under the shroud, so the choke on that
> side was free to do what it wants.  On the right, the automatic choke is
> hooked up right.
>
>
>
> Three different times in 1000 miles it has suddenly behaved as though it
> were out of gas, even though the gas tank is full.  A little sputtering 
> and
> surging followed by a stall and coasting to the side of the road.  If I
> crank it right away it won't start.  If I let it sit 10 minutes and then
> crank it, it starts up and goes on as if nothing happens.  My first 
> thought
> is that the loose choke on the left had inadvertently closed and choked 
> the
> engine to a stall.  However, this last time, with my friend available to
> crank the engine for me and me holding the choke open, I was still unable 
> to
> get the engine to start.
>
>
>
> I had him pump the gas a couple of times, and didn't see anything squirt
> into the throat as I should have.  So, I'm concluding that I have a fuel
> delivery problem.  I pulled the stones out, and they are clean and new
> looking, so I focused on the fuel pump.  I ordered a new fuel pump from a
> vendor.  When I went to put it on, I stripped the right fuel line. 
> Knowing
> that I would have to replace it, I took it off the carb too.  When I 
> dumped
> the gas out of it onto a paper towel, there was black debris in it.  It
> seemed rubbery, so I just figured it was bits of the diaphragm from the 
> fuel
> pump.  I took off the left fuel line too, and didn't find any debris in
> there.  There was a little more debris at the fuel outlet when I
> disconnected the pipe from there too.
>
>
>
> So, I put the new fuel pump in.  Then, being the type who does this, I 
> took
> the old fuel pump apart.  The diaphragm was in perfect shape.  No holes or
> missing pieces.  So now I'm wondering where this debris is coming from and
> why it intermittently blocks fuel delivery to the carbs.  I'm guessing you
> are all going to tell me to pull the gas tank, and I kind of don't want to
> because it is totally full.
>
>
>
> So, does this story have any specific meaning for anybody?  I'd like to 
> get
> the fuel delivery bugs worked out, as it stalled out on a busy highway 
> last
> time, and posed real danger for me and others.
>
>
>
> Also, any good tips of getting the upper choke rod out of the lower one 
> when
> it is broken off below the shroud?  I'm beginning to accept that fixing 
> that
> will be a big job, but I'll accept any tips you all can throw my way.
>
>
>
> Thanks to all.
>
>
>
> Chris
>
>
>
>
>
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