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Old 09-21-2008   #1
jonszr1
 
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Default cooling system ?s

comming back from the drag strip the low coolant light came on. i opened the rad cap which had pressure and found it to be about 11/2 qts on water filled it . about 80 miles later it did it again . i find no leaks anywhere . could it be the cap or is there somewhere else i need to look
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Old 09-21-2008   #2
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Default Re: cooling system ?s

Quote:
Originally Posted by jonszr1
comming back from the drag strip the low coolant light came on. i opened the rad cap which had pressure and found it to be about 11/2 qts on water filled it . about 80 miles later it did it again . i find no leaks anywhere . could it be the cap or is there somewhere else i need to look
Are you losing it out the exhaust? Could be head gasket? Gasket Failure on the IH?

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Old 09-21-2008   #3
jonszr1
 
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Default Re: cooling system ?s

pulled the plugs and seem ok , no leaks any where i can see , i did change pressure caps and it did seem to suck down the overflow a little . wondering if the pressure cap could cause it not to suck out of the overflow >?anyone here of this ?
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Old 09-21-2008   #4
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Default Re: cooling system ?s

You need to use a pressure tester on it with the engine off - much easier to find leaks that way.
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Old 09-21-2008   #5
jonszr1
 
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Default Re: cooling system ?s

thanx bob for your answer . you keep it honest and simple , and i am very greatfull for that . i will see if i can find one . kinda hoped to make vegas though as she was running so well fri.
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Old 09-22-2008   #6
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Default Re: cooling system ?s

Quote:
Originally Posted by jonszr1
comming back from the drag strip the low coolant light came on. i opened the rad cap which had pressure and found it to be about 11/2 qts on water filled it . about 80 miles later it did it again . i find no leaks anywhere . could it be the cap or is there somewhere else i need to look
The best advice is to put a pressure tester on it. Just to mention this but a very common coolant leak is from the water pump. Very hard to pinpoint but it usually will be evident front center of the engine on the ground of course. Good luck hope it is mnor. John
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Old 09-22-2008   #7
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Default Re: cooling system ?s

i got this dye test from napa and it turned out negative . put a new radiator cap on her and phew she is back to normal. didnt know the cap could cause that.
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Old 09-23-2008   #8
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Default Re: cooling system ?s

well the dye test isnt all its cracked upto be. well i guess i get to pull a motor and change a head gasket. might have to send them out to be ported and put my spare in .
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Old 09-23-2008   #9
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Default Re: cooling system ?s

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Originally Posted by jonszr1 View Post
well the dye test isnt all its cracked upto be. well i guess i get to pull a motor and change a head gasket. might have to send them out to be ported and put my spare in .

Spare ??? I thought that was given to the kids for the LT5 Mustang project that debuts in Feb?
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Old 09-24-2008   #10
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Default Re: cooling system ?s

I thought your buddy ported your heads and everything was transferred to the Callaway? Im confused or just not on here often enough .
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