Great tip Kris! I had the same problem and solution on my GT6; I didn't,
however, know about the thermosetting plastic.
Best wishes,
Mike Ross
'67 Spitfire (soon to be a Spit 6)
'66 Spitfire
'69 GT6 (parts car)
'70 GT6
----- Original Message -----
From: <SpitfireKP@aol.com>
To: <spitfires@autox.team.net>
Sent: Monday, August 07, 2000 5:08 PM
Subject: carb problem SOLVED
>
> A number of people asked me to reply to them when I figured out why my car
would randomly idle at 1300 RPM or so low that it would stall and would be
very difficult to start sometimes. Well the problem is this: The vacuum line
that controls the vacuum retard is, at least in my car, made of a
thermosetting plastic (I knew I learned someting in Intro to Material
Science and Engineering) and if it gets too hot, it permanently hardens.
This causes it to crack. because the nozzle which it hooks onto is on the
bottom of the carb and is about 1 inch from the exhaust manifold, it can get
hot if you don't route it the correct way. My advice to everyone who is
having similar problems is to feel the hose as it goes into the carb. If it
is hard, it is probably cracked. A temporary solution is to wrap the hose in
duct tape, but another hose is about $2 at Pep Boys.
>
> Kris Powell
> 1974 Spit
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