1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Oil in radiator/loss of oil pressure I/C'd motor

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Old Dec 22, 2011 | 09:48 PM
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Default Oil in radiator/loss of oil pressure I/C'd motor

Well my buddy has a truck i have not had a chance to look at or diagnose yet.... He just says it has oil in the radiator and no engine oil or pressure.... any ideas where to start??? he has the head off now...
 
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Old Dec 22, 2011 | 11:30 PM
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Oil cooler behind were the oil filter mounts. He should have pulled that first not the head.

Have him pull that and check for leaks..

 
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Old Dec 23, 2011 | 09:06 PM
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YEP OIL COOLER IS FIRST THING TO CHECK ALSO TRANS COOLER IF ITS A AUTOMATIC
 
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Old Dec 24, 2011 | 08:39 AM
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well I'll be doing the work... how do you ''check'' the oil cooler for leaks other than an obvious external leak???

---AutoMerged DoublePost---

just did a search and its about gotta be the cooler.... i'll be honest i didn't even know it had one.... thanks guys!!! now he's still gotta buy HG's intake and exhaust gaskets too... sucks to be him...
 

Last edited by 1st_gen_puller; Dec 24, 2011 at 08:39 AM. Reason: Automerged Doublepost
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Old Dec 24, 2011 | 11:39 AM
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Originally Posted by 1st_gen_puller
well I'll be doing the work... how do you ''check'' the oil cooler for leaks other than an obvious external leak???

---AutoMerged DoublePost---

just did a search and its about gotta be the cooler.... i'll be honest i didn't even know it had one.... thanks guys!!! now he's still gotta buy HG's intake and exhaust gaskets too... sucks to be him...

check the oil cooler by charging them with air under water look for bubbles

for that matter get a cummins manual there 20 bucks and they tell you all the cool stuff to look for i keep one behind my seat

if the oil cooler is bad i have close to 30 of them here
 
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Old Dec 24, 2011 | 05:28 PM
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IT REALLY TAKES A SPECIAL FIXTURE TO PRESSUREIZE THE OIL COOLER ON THE OIL SIDE OF THE COOLER AND IT HAS TO BE REMOVED FROM SIDE OF BLOCK TO DO IT. YOU COULD REMOVE IT AND TAKE IT TO CUMMINS AND THEY COULD CHECK IT FOR YOU ALSO POSSIBLY NOW A DODGE DEALER COULD. KEEP PRESSURE AT TEST TO 65-70 LBS, NO MORE !
 
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Old Dec 24, 2011 | 05:36 PM
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Take the caps lock off there bud...
 
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Old Dec 24, 2011 | 05:38 PM
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Sorry I,am a diabetic and my eyes are bad so its hard to see...... bud
 
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Old Dec 24, 2011 | 05:46 PM
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So is my dad, grandma and both grandpas... Hold ctrl and hit the + button to zoom in.
 
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Old Dec 24, 2011 | 06:15 PM
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Originally Posted by big bad diesel 416
check the oil cooler by charging them with air under water look for bubbles

for that matter get a cummins manual there 20 bucks and they tell you all the cool stuff to look for i keep one behind my seat

if the oil cooler is bad i have close to 30 of them here
what do they run i haven't even checked prices... PM me or put it on here i don't care...

also the caps lock deal really doesn't bother me...
 
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