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Joined: Nov 12, 2006
Posts: 6
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(Msg. 1) Posted: Mon Dec 11, 2006 7:51 am
Post subject: URGENT: OVERHEATING QUESTION-93 T-BIRD
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External
Since: Oct 30, 2004
Posts: 1802
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(Msg. 2) Posted: Tue Dec 12, 2006 5:19 am
Post subject: Re: URGENT: OVERHEATING QUESTION-93 T-BIRD [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"josh07" wrote in message
> my car just over heated and it has aluminium heads. soon as i saw the
> smoke i shut the engine off will my car be alright or will the heads
> be warped due to the over heating? thanks for the help
>
>
Could go either way at this point. Once it has cooled off and you have
corrected the cause of the overheating, you can do a "shadetree" test. With
the engine cold and off, remove the radiator cap and start the engine. Pinch
off the tube to the coolant reservoir and place the palm of your hand over
the radiator opening. If you feel steadily rising pressure within five
seconds or so, or (worse) pulsations, it is pretty certain you have a warped
head... maybe both. If you don't feel pressure on your palm within 15
seconds or so you should be okay. Of course, you will feel rising pressure
after a minute or two from the engine warming up, so don't confuse the two.
The definitive test (necessary if the first one gives you bad news) is to
put air pressure in each cylinder and check for rise in the coolant level or
bubbles in the coolant. That will determine which - or neither or both -
head(s) is/are at fault.
Good luck.
Mike |
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External
Since: Jul 27, 2006
Posts: 150
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(Msg. 3) Posted: Tue Dec 12, 2006 12:42 pm
Post subject: Re: URGENT: OVERHEATING QUESTION-93 T-BIRD [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Michael Pardee" wrote in message
> "josh07" wrote in message
>
>> my car just over heated and it has aluminium heads. soon as i saw the
>> smoke i shut the engine off will my car be alright or will the heads
>> be warped due to the over heating? thanks for the help
>>
>>
> Could go either way at this point. Once it has cooled off and you have
> corrected the cause of the overheating, you can do a "shadetree" test.
> With the engine cold and off, remove the radiator cap and start the
> engine. Pinch off the tube to the coolant reservoir and place the palm of
> your hand over the radiator opening. If you feel steadily rising pressure
> within five seconds or so, or (worse) pulsations, it is pretty certain you
> have a warped head... maybe both. If you don't feel pressure on your palm
> within 15 seconds or so you should be okay. Of course, you will feel
> rising pressure after a minute or two from the engine warming up, so don't
> confuse the two.
>
> The definitive test (necessary if the first one gives you bad news) is to
> put air pressure in each cylinder and check for rise in the coolant level
> or bubbles in the coolant. That will determine which - or neither or
> both - head(s) is/are at fault.
The definitive test is that after driving several miles at short and long
trips, the engine doesn't lose coolant.
As things heat up, they expand. If there are cracks in the heads, the cracks
can open up. As things expand, cracks or leaks that aren't present when an
engine is cold can open up.
Jeff
> Good luck.
>
> Mike
> >> Stay informed about: URGENT: OVERHEATING QUESTION-93 T-BIRD |
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External
Since: Oct 13, 2006
Posts: 24
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(Msg. 4) Posted: Tue Dec 12, 2006 1:44 pm
Post subject: Re: URGENT: OVERHEATING QUESTION-93 T-BIRD [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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It kinda depends on which engine, too. My '93 Cougar V6 stopped making heat
one day last spring. When I checked, coolant was low. When filled back up
and bled, the pressure cap would release every time the engine was goosed
over idle. Big bubbles into the overflow tank. $1700 later, after head
gaskets, valve job and timing cover seal fix, she is good as new!
PoD
"josh07" wrote in message
> my car just over heated and it has aluminium heads. soon as i saw the
> smoke i shut the engine off will my car be alright or will the heads
> be warped due to the over heating? thanks for the help
>
> --
> Posted at author's request, using http://www.AutoBoardz.com interface
> Articles individually verified to usenet standards. Visit URL to contact
> author/report abuse
> Thread archive:
> http://www.AutoBoardz.com/OVERHEATING-93-BIRD-ftopict200224.html
> >> Stay informed about: URGENT: OVERHEATING QUESTION-93 T-BIRD |
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External
Since: Oct 30, 2004
Posts: 1802
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(Msg. 5) Posted: Tue Dec 12, 2006 5:20 pm
Post subject: Re: URGENT: OVERHEATING QUESTION-93 T-BIRD [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Jeff" wrote in message
>
>
> The definitive test is that after driving several miles at short and long
> trips, the engine doesn't lose coolant.
>
Although that can have false positives - anything that was disturbed by the
overheating can cause coolant loss, and often these episodes are caused by
coolant loss in the first place. It can also have false negatives -
sometimes the coolant loss isn't obvious, even though exhaust gases are
carving out a channel through the head gasket. But I agree that the engine
isn't out of the woods if coolant is disappearing anywhere.
Mike >> Stay informed about: URGENT: OVERHEATING QUESTION-93 T-BIRD |
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Joined: Nov 12, 2006
Posts: 6
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(Msg. 6) Posted: Tue Dec 12, 2006 10:27 pm
Post subject: Re: URGENT: OVERHEATING QUESTION-93 T-BIRD [Login to view extended thread Info.]
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thanks for your help guys. i replaced the coolant and drove the car all day today and it did fine i was just mainly worried blowing a headgasket and warping the heads (already replaced once...it was beast) but it seems to be doing fine. thanks again >> Stay informed about: URGENT: OVERHEATING QUESTION-93 T-BIRD |
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