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  #1  
Old 03-21-2013, 06:39 PM
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Question Head gasket symptoms

05f250 studded and deleted new oil cooler and a power max sometimes my truck build what feels like pressure in the coolant then somedays it's no pressure and the cap isn't bad/leaking no loss of coolant no overheating. It's just weird. Never owned a 6oh first one only delt with obs 7.3s so it a whole diff game for me
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  #2  
Old 03-21-2013, 07:29 PM
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Some pressure is normal. Puking is abnormal. Whistling is abnormal. Your cap should be updated to the new style 16psi. Your pressure should not really get above 10-12psi under very high loads, assuming you don't over-heat it.

FWIW, if you had let the pressure off and you had no problem, and you put it back on and kept driving, it would probably show no pressure if you loosened it again. At some point air would equalize over time while parked and cool. If you are really concerned, hook up a pressure gauge to one of the small tubes coming off the degas. If you get to >15psi on acceleration, you have a problem.
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Old 03-22-2013, 09:03 AM
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That's the thing it only puked whenever the guy that did the oil cooler filled it up completely. It was bad till it got to about an inch under the min line. But no pukes whistling(except the powermax) lol and no pressure bleed off when I park it. And I did pressure test it before we done the oil cooler and boost build like power braking but not letting them get loose the pressure went to about 6psi then dropped to like 2-3psi when I boosted. That's when the thermostat was new and everything could it be the thermostat?? When I got the truck it didn't have one and it never got warm either.
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  #4  
Old 03-22-2013, 09:36 AM
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Good to get more info from you! You don't have a problem, except OVERFILLING. On a level surface, the fluid should only be about 1/3 in the degas, measured at the front of it. Ensure you are now at the correct level and go have fun with your truck and quit worrying.
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Old 03-22-2013, 11:20 AM
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So how much under the minimum line? I'm new to 6.0s lol
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Old 03-22-2013, 01:16 PM
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The old min line is now the new max line. So you can be lower than that.
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Old 03-22-2013, 01:49 PM
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Yeah it's about an inch lower
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Old 03-22-2013, 03:32 PM
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I got it to normal temp and released the pressure which seemed like a lot and let it run some more for about 10 minutes and it didn't build any pressure so am I good?
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  #9  
Old 03-22-2013, 04:41 PM
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Read post #4! The probability that you have a problem is very low.
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