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

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  #1  
Old 02-08-2013, 04:09 PM
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Default oil blowing out of overflow for rad

no water in engine oil but oil in rad fluid blew out overflow all over motor head gasket? im sure this is an redundent ? i could find by searching but it just happened and its friday any hints ? i just joined bombers will post pics of my morphed truck later ,any help would be greatly appreciated thank you

---AutoMerged DoublePost---

i have owned this truck for 11 years this is the first mech issue ive experienced 2cnd gen motor was istalled by previous owner truck has 194k on it

Last edited by 91w250duallygen2motor; 02-08-2013 at 04:09 PM.. Reason: Automerged Doublepost
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  #2  
Old 02-08-2013, 04:21 PM
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How bad is it pressurizing the radiator?
2 thoughts, head gasket or oil cooler
Is it engine oil? Manual or auto?
Take the radiator cap of and run it and see if it is bubbling
Sorry for the not so thoughts

Last edited by blackduck; 02-08-2013 at 04:30 PM..
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  #3  
Old 02-09-2013, 12:42 PM
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Status: 1st Gen Scrapper!

   

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I concure with the prior post, it is either a blown head gasket, or a bad in-block oil cooler.
Most LIKELY the oil cooler.
Since the oil pump pushes more pressure than the cooling system can ever hold, if the oil cooler corrodes, or an 'O' ring on the cooler goes bad, it fills the cooling system with oil.

Interesting enough, sometimes if the cooling system is full, it limits the amount of oil in the system, BUT the system will be full to the top, with oil usually sitting at the higher points.

Sometimes it'll affect heater cores and other components, sometimes not.
It just depends on how low the coolant in it was prior to the leakage and how severe the leak is.

Mark.

Mark Nixon's Sig:1991.5 2wd, 1 ton Flatbed, 1/4" timing, screwed, 3200gsk, Automatic, stock otherwise.
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  #4  
Old 02-10-2013, 05:10 AM
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Thank you guys for the info I figured it out right after posting it was the oil cooler I spent sat flushing system out the best thing is I finally registered with diesel bombers forgive me for not completing my profile I'm doing this all from my crappy phone again thank you wIll finish profile and post pics this week
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  #5  
Old 02-10-2013, 09:12 AM
Diesel Enthusiast
Status: 1st Gen Scrapper!

   

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Originally Posted by 91w250duallygen2motor View Post
...I'm doing this all from my crappy phone again thank you wIll finish profile and post pics this week
If "hell" exists, I would say posting from a phone is one of those trials you have to go through as a part of it.

Glad to see you have some progress.

Mark.
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