99 7.3 injector cups leaking - Ford Powerstroke Diesel Forum
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  #1  
Old 09-26-2010, 01:47 PM
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99 7.3 injector cups leaking

i just got 99 7.3 that had diesel in the coolant so i replaced the injector cups but it is still getting diesel in the coolant any help would be great thanks
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Old 09-26-2010, 02:50 PM
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Could be cracked head
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Old 09-26-2010, 03:59 PM
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that could be but wouldnt u notice it running different it runs normally just leaks into the coolant
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Old 09-26-2010, 04:02 PM
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does coolant go thru the oil cooler? I think it does, if so could be there?
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Old 09-26-2010, 06:33 PM
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The only place fuel and coolant come together is in the cylinder head. Either the cups are still leaking or the head is cracked.
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Old 09-27-2010, 02:19 AM
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no coolant gping thru the cooler?
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Old 09-28-2010, 11:48 AM
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thanks for the help
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Old 10-03-2010, 05:32 PM
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could also be that you had more fuel in the cooling system than what you thought and the fuel you are seeing is from the block itself I would trying flushing the block a few times before I go and start ripping heads off
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Old 10-05-2010, 08:45 AM
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Quote:
Originally Posted by melmount View Post
does coolant go thru the oil cooler? I think it does, if so could be there?
Yes coolant goes through the oil cooler. I would still lean towards the injector cups or O-rings not being right still.
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Old 10-05-2010, 03:02 PM
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Yeah coolant goes through the oil cooler but fuel doesn't. If you are sure it's fuel then either the cups didn't seal right, there was fuel leftover that wasn't flushed or the head is cracked.
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