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

smoke and leak

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Old 10-16-2010, 08:21 PM
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Default smoke and leak

I have an 89 12 valve in a 99 ford f-350, smoking real bad all the time, blue smoke not oil smells like fuel, I have this engine inner cooled, is it ok to do this with an engine not originally inner cooled? inj. pump is also leaking. thanks
 
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Old 10-16-2010, 08:31 PM
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fix the leak first its probably letting air in too. where is the leak at?
 
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Old 10-17-2010, 11:11 AM
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timing?
 
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Old 10-17-2010, 07:52 PM
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the leak is between the back two bodies on the inj. pump It has been leaking off and on for a while. my concern is will this non inner cooled pump be alright running an inner cooler. I am going to fix the pump, but was'nt shore if I needed a pump off of 2nd gen 12v. Also I found a pump off of a stationary cummins . Will it work? thanks
 
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Old 10-17-2010, 08:23 PM
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your cylinder head could be cracked where the the injectors come in next to the valves. i just blew my head gasket and when i got it all apart i found out i had 6 cracks on 1-5 cylinders and the #2 cylinder had a crack going to both the intake and exhaust valve which i belive caused the valves on that cylinder to pit all to hell. my truck for a while had alot of blue smoke so i think thats wat did it. thats just my imput though.
 
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Old 10-17-2010, 08:28 PM
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I dare you to find a 1st gen 9mm head w/o cracks... you wont. They don't hurt anything and are perfectly normal.
 
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Old 10-17-2010, 09:01 PM
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huh. figured cracks wouldnt be a good thing.
 
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Old 10-18-2010, 04:01 PM
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If they are gapping holes then yes. If just a hairline they are fine, VERY common.
 
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