Paul,
I don't know if the other message went through so forgive me if this is a
double post.
Yes, I am referring to the o-rings. I like the idea of blowing through the
vent pipe, that will be my first step. I have been looking for a way to
test the jet passage after assembly!
You mention the float bowl level. Is the level in the bowl an exact science
(when rebuilding the carbs my floats were not leaking and seemed to be at
the correct height). I know there is fuel in there. Could it be that the
level is too low? The pump stops once it is full everytime. Could the fuel
be below the level where it is effectively sucked out?
Dereck
70 B
(on the digest)
PS I enjoy your web site and visit often! I might have to take a road trip
up and visit sometime, but only if I am driving the B ;)
------------------------------
Date: Thu, 17 Aug 2000 09:45:49 -0400
From: "wizardz" <wizardz@maxinter.net>
Subject: Re: 70 MGB no start after complete rebuild UPDATE
You can run the SU's with the dashpot plungers completely removed.
All that will do it let the pistons rise very quickly which would not allow
the mixture to richen properly upon quick throttle openings and perhaps
create
other oddities such as idle float.
You shouldn't need to tighten the jet to float bowl connection that tight to
crush it.
Are you referring to the inner most o-ring seal? The nut around the tube
should
have a small
brass washer between it and the o-ring that acts as a skirt as the nut is
tightened down
so it doesn't drag the o-ring around in a circle as you tighten it.
It does sound like fuel starvation. Have you check float levels.
You should be able to 'blow' into the float bowl vent pipes and have gas
flow up
into the throat
of the carb.
Check your fuel filter and line all the way back to the tank for blockage.
I've seen clogged vent systems that would create a vacuum on the float
chambers,
stopping
fuel from flowing. This is actually part of the design of the later
emission
controls with the
carbon canister. When you shut off the ignition, a solenoid opens briefly
(until
oil pressure drops)
which allows the intake vacuum to be applied to the tank and float bowls to
control run-on.
Paul Tegler wizardz@toad.net http://www.teglerizer.com
________________________________________________________________________
|