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Old 10-15-2012, 06:53 PM
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Coolant in oil

I have a 2008 f450 6.4 and I just recently rebuilt the engine because it had melted a hole in a piston, after the rebuild I noticed I was loosing large amounts of coolant and discovered it was going in the crankcase. Since then we have replaced the front cover and it is still loosing coolant. I am suspecting the oil cooler , if anybody has any Ideas I am open to suggestions. Thanks Dan
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Old 10-16-2012, 07:33 AM
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Usually if its the oil cooler it will get oil in the coolant because the oil pressure is higher. Could it be leaking from the radiator or an egr cooler?
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Old 10-16-2012, 07:11 PM
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I am definitely going to check on that , but I'm not sure there is any engine oil running through the radiator. I've always seen in the past in cars that it would put the coolant into the transmission .
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Old 10-17-2012, 07:11 AM
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There is no oil running through the radiator. I would guess either a radiator, radiator hose or egr cooler. More than likely if you had a bad oil cooler you would have oil in your coolant. WHat are your deltas between your oil and coolant temp?
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Old 10-17-2012, 08:05 AM
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I couldn't tell you right now , the truck is tore down. I forgot to mention that when I rebuilt the motor , I had a new sleeve put in the cylinder that had the melted piston and I have had people tell me maybe there is something wrong with the sleeve.
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Old 10-17-2012, 08:07 AM
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Well good luck bro. Keep us posted!
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Old 11-22-2012, 03:30 AM
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Update ! After the 3rd time of having the motor out we finally figured out where the coolant is coming from. I had forgot to mention that I had put head studs in on the original rebuild , turns out that was my down fall. The studs ended up cracking my block in 4 different stud holes in the valley of the engine right above the lifters. I don't know if anyone else has had this problem or if it is just my bad luck !
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Old 11-22-2012, 04:43 AM
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Quote:
Originally Posted by Dan c View Post
Update ! After the 3rd time of having the motor out we finally figured out where the coolant is coming from. I had forgot to mention that I had put head studs in on the original rebuild , turns out that was my down fall. The studs ended up cracking my block in 4 different stud holes in the valley of the engine right above the lifters. I don't know if anyone else has had this problem or if it is just my bad luck !
Wow that sucks. We're they installed improperly or was there another reason that happened?
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Old 11-22-2012, 07:34 AM
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I have had a lot of people ask me that , the way that I installed them is lube up the threads with the ARP assembly lube and hand tighten into the block , next I installed the head and put assembly lube on the nut and washer, then torqued the studs to 180 ft lbs in the sequence specified in the instructions and then I torqued them to 275 ft lbs. I am pretty sure that is the correct way to install them.
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