My guess - If you're sure the coolant is coming out of the cap, and if
you're sure that the engine isn't overheating - you have the wrong cap, or a
bad one. The springs can lose their tension and the gaskets can wear so they
don't last forever. I don't know about the 4A, but the 3A has an uncommon
cap that isn't generally available other than from a Triumph supplier so its
also possible someone put the wrong cap on.
Also, the 4A should have a recovery bottle. If that's installed and you are
still losing that much coolant through the cap, get a new cap.
Personnaly, I don't see how the skirted thermostat effects this problem, but
that's just me.
Bob
----- Original Message -----
From: "Scott Bloomer" <flaedersaft@cfaith.com>
To: <triumphs@autox.team.net>
Sent: Thursday, May 30, 2002 11:49 PM
Subject: overheating- skirted thermostat?
> My TR4A is running well but loses about a quart to a half-gallon of
coolant
> through the pressure cap when I have run it for 20 minutes. I read TW's
> website remarks about skirted thermostats solving this problem in a TR3
motor-
> anyone have any ideas if it's suitable for a TR4A? I have a new radiator
core
> and new Moss summer thermostat in it.
>
> BTW, the temp guage runs cool, never show hot even when I am blowing
coolant.
> I figure this may be related to the gas guage which reads less than half
even
> when full, because they are on the same circuit.
>
> Any ideas?
> Scott TR4A
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