RE: [DML] Small Coolant Leak

[<rob@xxxxxxxxxxx>]

Alistair,

When the temperature approaches freezing it is advisable to grab the
appropriate tools and give all the hose clamps a turn or two as required.
This can take some time as there are about 48 of them not counting the four
that reside under the intake manifold. Harold is dead-on in advising using
silicone hoses for the block pipe to water pump backing plate as you don't
want to do that job twice in one year. A leak there has been known to cause
the PVR engine block to fail over time. We've been using silicone hose there
on all water pump replacements for well over twenty years and have never had
to go back and re-tighten a silicone hose clamp. If you don't want to follow
a yearly clamp tightening ritual then silicone hose with the correct clamps
(no open slots for the worm gear) is the only way to go. Although expensive
initially silicone hose will generally outlast the rest of your car!

Rob Grady,

P.J.Grady Inc.

-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
Alistair McCann
Sent: Friday, March 03, 2006 10:45 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Small Coolant Leak

Hi all

I have noticed that when it falls below freezing or very near to it my car
drips a very small 
amount of coolant.  I thought that I had a cracked pipe but I ran the car
today for nearly an 
hour and then let it sit and there where no leaks at all.

Now I have just come home from work and there is a small puddle of coolant
under the 
engine.  Am I right in thinking that the cold weather is shrinking the
piping and causing them 
to leak slightly???  When the weather is above freezing there are never any
leaks.

Any ideas??

Alistair
VIN:- PILOT 25
Belfast.








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