Pontiac: Thermostat, direction of installation ?

R2 wrote: 

Pointy part towards radiator, spring towards block.
There is probably air in the system.
Drill a hole in the thermo if there is not one - hole UP.
http://snic-braaapp.org/itech98.htm

"R2" <a> wrote in message news:supernews.com... 
I 
wondering 

Confirmed that the spring end of the thermostat goes in the block.

Thanks Paul !

Could it be an air lock even after a few hundred miles ? I used the bleeder
when I refilled. Do you have any tricks to bleed the system ?

Thanks &
Take Care
Roy

"« Paul »" <rr.co.tx> wrote in message
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block. I 
I've 
go 
wondering 

Thanks for taking the time to help !

Take Care
Roy

"Sting Ray" <Sting_Ray(no spam)@vette.com> wrote in message
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block. 
I've 
go 

R2 wrote: 

Yes, there could still be air in the system. Sometimes an indication
will be temp that fluctuates suddenly, or heater that sporadically puts
out heat and then stops.
Just keep on checking the overflow tank and make sure it is topped off.
Try to do it when the engine is warm, but not hot, so that the
thermostat is open - careful.

Some of the GM cars have a little bleeder screw around the thermostat
housing. If youres doesnt one thing i learned a long time ago on
the front drives.is that the radiator is lower than the engine block
which has a tendency to make an air pocket. One trick i learned may
sound "off the wall' but it does work. Jack the front of the car up
with a floor jack (safely of course) and run the engine with the
radiator cap off .This will get rid of the trapped air. Run it at
least until the fan starts and you get good heat from the heater. The
spring on the thermostat points toward the engine. And dont fill it
too fast.

Thanks !

I put the 3rd thermostat in today, a couple of additions, I drilled the
hole, hopefully to make a quicker bleeding of the system. I recall, now
that you mention it, that GM thermostats always had a little hole in them, I
remember my shop teacher point that out quite a few years ago, well now my
brand new on has one to !

Thanks &
Take Care
Roy



"« Paul »" <rr.co.tx> wrote in message
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bleeder