<VV> Fuel Pump Issues

[corvairduval at cox.net]

If you are actually slowing the starter due to LIQUID, you have WAY too
much liquid going into the cylinders. In fact, any liquid is too much, as
it should be vapor by the time it reaches the cylinder, otherwise you do
get hydrostatic lock, which bends rods.

Repositioning the distributor will not make (or conversely not make) a
spark at the plug. i.e. When you crank the engine, it should make a spark
at the plug no matter what the position of the distributor. Those are two
different things. Get the spark working, then reposition the distributor to
get the spark at the plug timed correctly for the piston/valve position.
Now, if the spark happens at the wrong time (relative to valve/piston
position), you get no start or BOOM!

If I were trouble shooting a no spark, I would subtitute a point plate with
good pints and condenser and see if I get my spark back.

You say +12 at + of coil, that's good. Now what is on the - of the coil? It
should vary between 0 and +12 as you crank, typically a voltmeter reads
somewhere in the middle of that as you crank.

If the - terminal stays at +12 or 0, there is the problem, no action from
the "points" wheter electronic or standard.

Is there a rotor in the distributor? That's my usual mistake....  "That's
why it won't start, the rotor is still sitting on the rear frame rail".

Frank DuVal


Original Message:
-----------------
From: Byron Comp byron.comp at yahoo.com
Date: Mon, 25 Apr 2011 11:15:06 -0700 (PDT)
To: virtualvairs at corvair.org
Subject: Re: <VV> Fuel Pump Issues


Yes, well, using those tactics I guess I can pretty well eliminate the fuel
system from my list of "usual suspects," at least for the time being.

>I always use a can of carb cleaner, squirt a stream left and right 
>back and forth to convince the engine to spin up, if only for a 
>couple of seconds or so to get the fuel pump working... otherwise you 
>could be 5 minutes cranking on it to get a dry pump to finally begin 
>picking up gas from the tank.

I got nothing different except that it nearly stalled out the starter for a
few seconds while it dealt with the excess fluid, but that's all. It just
kept grinding. It seemed like I was getting no fire from the distrib./coil
at all. In fact, I wasn't! I pulled the wire off the coil entirely and it
made no difference. I changed coils (Pertronix) and that made no change.
I've re-positioned the distrib. according to the instructions in the shop
manual at least half a dozen times and am as sure as I know how to be that
it's where it belongs; but I've certainly been wrong before. The electronic
distrib. & coil are both new. I have 12 volts at the positive side of the
coil and the startercertainly seems to be doing its job alright. What's
next?
 
Thanx for your patience and everybody's advice thus far.
 
Byron Comp
'64 Monza Vert.
Gainesville, FL
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