Why is my 6.0 "spotting" with coolant? - Ford Powerstroke Diesel Forum
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Old 01-29-2014, 05:26 AM
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Why is my 6.0 "spotting" with coolant?

So I have to go through an inspection every morning (work at a nuclear plant) so I have to pop my hood every day. More often than not I get a faint smell of antifreeze. I can see some spots, not puking, but just a few red spots on the coolant tank. Its been like this for probably 6 months now. I'll wipe it off and no matter how I drive the truck, whether like a grandpa or like a bat out of hell within a week there will be a few more spots. I've added coolant once - maybe 1/5 gallon a couple months ago. I think that is gone again now.

I drove 45 miles on Monday night in a terrible hurry, drove it like it was a race car and never saw any abnormal temps and it never puked and I couldn't smell antifreeze.

Deltas are usually 1-4 degrees, never in any conditions do I see over 7*. No oil in the coolant that I can tell.

Just replaced the tank cap and still have the same problem.

What could be going on here?
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Old 01-29-2014, 05:55 AM
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Defective cap, overfilling [the new full is actually below the minimum line on the bottle] nearly invisible hairline crack etc.
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Old 01-29-2014, 06:05 AM
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ford likes to replace the degas bottle when this happens
they say the sealing surface can distort

if it were mine I would tee into the top hose at the degas bottle and pressure test
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Old 01-29-2014, 06:11 AM
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Beginning stages of head gasket failure.
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Old 01-29-2014, 06:22 AM
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Quote:
Originally Posted by dfuzz78 View Post
Beginning stages of head gasket failure.
While that is always a possibility his temps at this point show no signs of impending gasket failure, as Zman says only a pressure test can really tell.
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  #6  
Old 01-29-2014, 06:26 AM
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Quote:
Originally Posted by dannyboy950 View Post
While that is always a possibility his temps at this point show no signs of impending gasket failure, as Zman says only a pressure test can really tell.
Temps don't have anything to do with gasket failure.

He's deleted already.

His head bolts have started to stretch.

Start saving for a head gasket job, because it's not going to get any better.

Last edited by dfuzz78; 01-29-2014 at 06:30 AM. Reason: Removing part about him having a BPD oil cooler
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