Cummins nightmare

[Big Hamp]

I have a 07 5. 9 CTD which I use to pull RVs with. This engine has never missed a beat or used any oil. Today, I was cruising down I 65 and looked in my mirror to see spots of oil on the RV behind me. Upon closer inspection when I pulled over, it was oil. Oil was all under my truck and the breather tube had some vapor coming from it. When removing the oil cap, there was some vapor coming from it in a puff puff puff. The oil was thinner than normal and seemed to have diesel in it. The engine never showed any symptoms or smoke or noise of any kind. It was running and pulling good. It had to start today because I just did an oil change and service yesterday and the oil level was full before starting out this morning. Any ideas of how much damage I have incurred , what to look for, or how to procede in repairing it? Any help would be appreciated.

 

[NRussell]

sounds like... . excessive blow-by... . not good. I experienced same thing.

 

[Big Hamp]

I suppose it is an injector that overfueled a cylinder??

 

[Delrayz]

Is the oil level going down or up? Possible injector o-ring leaking fuel into valvetrain area. This happened to me and dump 2 gals. of fuel into oil pan before I caught it. Deluted oil will smoke the turbo!!!!

 

[HBarlow]

How many miles on the truck? More details? Did you mean the oil was changed before or after you discovered the problem?

If before, who serviced it and did you check the oil level after the oil change? Is there a possibility too much oil was dumped into the crankcase or that it wasn't completely drained before filling?

 

[cerberusiam]

At least one piston\rings is done. If your lucky the hole can be salvaged. Either broke some rings or over fueled and melted the piston. Pull the head and check it out is about the only to know for sure.

 

[TCDiesel]

We have the Injector tool to check compression, You are welcome to use it,there is a $300. 00 deposit on it and will be refunded upon return,this will help before pulling the head, if all check out then injector problem. I'm 90% sure the head will need to be removed,the ONLY sure way is removal.

 

[GaryOwen]

I had the same issue on my 03. I had all injectors tested at Daves Diesel in Angola, IN. One injector was bad and dumping fuel. I replaced the injector and drove it for another 150k miles before selling the truck. If there was any damage to the engine, it was not apparent. I would recommend not driving the truck until it can be checked out though.

 

[AlaskanCummins]

I've alredy decided that if/when my engine dies because of this wretched common rail fuel system that I'm going to convert it to a 12 valve P-pump engine/system.



I've got the NV5600, so no problems there with shifting, etc.



I figure it'd be just as expensive either way and in the end, I'd have a more reliable truck.



I think the only problem would be getting the guages to work properly since they are operated by the cummins can-bus system/computers. I suppose it'd be a good time to convert it to manual guages too!



Just my . 02 cents.

 

[Big Hamp]

Harvey, it has 223,000 miles and the oil was changed the day before this problem. The oil level was correct then and the next morning before leaving Goshen, In. Something happenned on the way south, but with no warning or any sound, smoke, miss or anything to let me know anything was going wrong. I looked back at the front of the trailer and saw oil on it, so I don't know how far I went with it doing this. It definately has fuel in the oil, it's very thin. Just hope it has not done much damage. It still cranks like always, no smoke from the exhaust and no missing.

 

[Big Hamp]

Gary, I wish it had done it close to Dave's in Angola. They replaced an injector for me a month or so ago. Rick is a very knowledgeable and stand up guy. I'm home in Alabama and really don't have a good choice I'm comfortable with to take it to here.

 

[Big Hamp]

How do I put the truck and equipment at the bottom of the page??

 

[HBarlow]

I'm sorry to hear of your bad luck. Having been a transporter myself I understand very well what you're up against.

It does sound like another bad injector and someone just recently posted that Cummine reman injectors are not available yet for the ISB6. 7 engines. If you have already replaced one and indications are another one has failed, if the engine is not trashed you would probably be wise to replace all six with new ones.

A dealer with a Level IV trained and certified Cummins tech can run a diagnostic routine for about $100 to determine what the problem is.

Mike Mullenax, TDR member and dealer tech is very knowledgeable. He is the lead diesel tech at Elder Dodge in Athens, TX which is East Texas. You might try PMing Mike.

You might also PM Joe Donnelly, TDR writer and member and ask him for advice and recommendations. IMO no one except a Cummins engineer knows more about our engines. Joe knows everyone in the Cummins engine "business" and will give you good and honest advice.

I suppose I was lucky. I put 175,000 miles on an '01 24 valve in less than a year and a half and 230,000 miles on a brand new '06 in one year and nine months while pulling trailers. I never experienced a major problem and never an engine problem.

 

[TCDiesel]

How do I put the truck and equipment at the bottom of the page??

Discussion forums>User control Panel>Settings & Options>Edit Signature, Just fill it in form there, Year. Mod,etc.

 

[Big Hamp]

Harvey, thanks for the info. My truck is a an 07 5. 9, the last of the good ones-I thought!!!!!

 

[Big Hamp]

Took truck to a diesel garage where they pulled all 6 injectors and sent them to a diesel specialty shop to get them checked. Number 4 was said to have a crack between the solenoid and the body, so they sent another one and the shop put it back together and thought all was well. After it was driven a couple of hours, more oil was manufactured. So now the shop says they do not know what is wrong or what to do. The truck cranks great, runs smooth as silk, has no misses or skips and does not smoke at idle or highway speeds. Anyone have any ideas where this fuel could be getting into the crankcase? Any ideas would be appreciated.

 

[TCDiesel]

Yes ,Please call Todd . . I will be taking calls until 10pm

 

[HBarlow]

Three or four years ago when I had a high mileage '06 ISB5. 9 I considered a set of Cummin reman injectors. At that time a Cummins dealer in Amarillo told me a set of six Cummins remans was about $1700. That is a heck of a lot better than one new injector for an ISB6. 7 @ $1700 as someone, I think sag2, reported.

My solution would be to buy a six pack of Cummins reman injectors.

 

[Big Hamp]

Well, Harvey, since 3 of mine are less than 6 mos. old, I don't think I'll be doing that. I should have done all 6 when I changed the first one though.