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Re: [Alpines] Over Heating

To: "alpines@autox.team.net" <alpines@autox.team.net>,
Subject: Re: [Alpines] Over Heating
From: Tony Somebody <achd73@yahoo.com>
Date: Tue, 3 Feb 2009 07:47:51 -0800 (PST)
There are no leaks, The radiator has been pressure and
> flow tested OK,the water pump checks OK, good flow in top
> tank, with or without the  thermostat installed.


Phil
Have you checked compression? Usually when an engine overheats it is from the 
before mentioned problems. SO, if the water pump is pumping and the problem 
continuses after the thermostat is changed and you say the radiator is 
flowing(has it ever been rodded out?)- the heat has to be coming from the 
engine- usually a blown head gasket. When a head gasket blows one or two things 
happen. ONE- water gets into the oil or two- compression gets into the water. 
Since you arent losing water (antifreeze mixture) and if the gasket is blown 
then compression would have to be heating up the water. When you shut the 
engine off- Do you hear a gurgurling sound? Like the water is boiling inside 
the engine- does so until the temp drops down?? If not and a compression test 
shows the same pressure on all cylinders, I would start thibking about finding 
another gauge oand or sending unit. Have you used a heat gun( that measures 
temps) on the outside of the engine to know what
 the engine temp is ambient wise?
Im getting at if you have no other signs of a problem besides the gauge you 
need to prove to yourself the engine is hot. Does it boil over or bypass the 
radiator cap? Does the engine ping from it getting to hot to drive? IF NO to 
all questions- go make sure it is really hot and not just the gauge or sending 
unit showing hot. Good luck.
TtT


--- On Tue, 2/3/09, philipreddy@fuse.net <philipreddy@fuse.net> wrote:

> From: philipreddy@fuse.net <philipreddy@fuse.net>
> Subject: [Alpines] Over Heating
> To: "alpines@autox.team.net" <alpines@autox.team.net>
> Date: Tuesday, February 3, 2009, 9:09 AM
> My series III has developed an over heating problem. I have
> owned the Alpine for 35 years and renew the antifreeze
> regularly and have never had this problem until this past
> year. There are no leaks, The radiator has been pressure and
> flow tested OK,the water pump checks OK, good flow in top
> tank, with or without the  thermostat installed.
> 
> I am looking for suggestions on how to proceed from here.
> 
> Phil Reddy
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