I just did some horse trading and ended up with an 05 3500 crew cab 2wd. It's an early 05 with the NV5600. It's got airbags on the rear, a bd exhaust brake, a cai, and an mp8. The truck has 168,000 miles on it, previous owner had the truck for the last 6 years and believes the injectors to be stock. First thing I did when I got it was check the oil, the level was high. I thought maybe too much was put in last oil change. In any case I changed the oil and filter. I took it for a ride, afterwards parked on a level surface overnight. First thing I checked the oil level for a base line Then drove it about 100 miles. Parked truck in the same spot and let it sit overnight. Checked oil, it was slightly higher on the stick, maybe and 1/8". Next day repeated with the same results. The truck starts, runs and drives like a new truck. Smokes a little on hard acceleration. The mp8 is turned all the way down. I read they are hard on injectors. Im figuring the truck needs injectors. Everything I've read points to Exergy to be the best source for quality injectors and customer Service. Before I bite the injector bullet I wanted the get some opinions from others. Thanks in advance!

 

This happens when the engine sumps the oil from the filter. run the truck, then turn it off, and check the oil level. This has happened to me as well.

 

I did read a few posts about that however I don't think the oil filter has enough capacity to make it rise a 1/4" on the stick, ( an1/8 of an inch each day). I stopped driving the truck while I researched it. I feel if I keep driving it the level will keep increasing. I would love to find out im just being paranoid but at 168,000 miles its only a matter of time before injectors are needed. Without driving the truck to see if the level increases what else can be done to verify diesel in the oil? Would an oil analysis pick up diesel fuel?

 

The oil analysis will be best to check for fuel in the oil. You can also take a paper towel and put a drop of oil on the towel. It will make a round spot and if there is fuel in the oil it will form a ring around the dot.

 

If it has raised 1/4" on the stick and it is diesel, you should be able to easily smell it. If you're still not 100% sure then the oil analysis will tell you 100% yes or no.
You are right to NOT drive it until you know for sure.

 

Will the ring be a greenish color like diesel? I tried your test, the drop stayed wet looking in the center while the edge seemed to soak in more.

 

I honestly cannot smell diesel.


It's just strange to me that the truck runs just fine. I did notice the other day while sitting still in neutral if I slowly brought up the rpms at certain times I would get a vibration.

 

1/4 inch on the dip stick is a little more than 1 pint. The hash marks is 2 quarts. It should not hurt to run the engine, just don't load it and go easy on the throttle. Check the oil level often. I would check the level just after you shut the engine off each time with the truck on level ground. Note the oil level and see if it is rising.

The oil analysis is your best bet to be sure.

 

Ever had an oil analysis done? Is there someplace in particular most people use or just a google search?

Thanks for the help.

 

I have never had an analysis done. I change the oil at 7500 miles or 1 year which ever comes first. Can't see any change on the level between changes.

Sorry I do not know of a place to have it done but do a search on this forum or may be someone will recommend a lab.

 

I am not sure if you fixed the problem yet but I am facing the same issue with my 07 5.9. All i can tell you is I have not yet fixed the issue. I am going to run it for a few days and see if it has stopped but I just had my injectors tested and they passed.
However, My next step is the CP3 pump. I bought new seals last week and I am going to have it tested soon to see if it holds pressure before I go through hell to get it apart. You might wanna look into that as well becuase if a seal is abd it dribbles down into the crank case. When I first found this problem my oil level was registering over a 1/2" over the safe mark. Change your oil often because fuel dilution can mess with your bearings. Some other thigns I have been looking into are bad rings, and a crack in the block or head. (Which shouldnt be considering my motor was Just rebuilt recently)

 

Please keep me posted on your progress.

 

I talked to a tech at ATS this morning for nearly 20 minutes about the issue. He was adamant that it had to be an injector. Now I am only more confused considering they apparently passed to run, barely though. If the rings are bad, oil will be lifted through the piston and being combusted which gives a bi-product of grey hazy smell smoke even at idle so I guess it can't be the rings. As for where to go from here... I am looking at a bunch of tests and a lot of money. CP3 test, leakdown test, fuel system pressure test, and the list goes on. In your case maybe it is just the injectors. In my case well who knows.

 

Yea I'm really not sure either. My truck doesn't smoke at idle, it starts great. I'm gonna drive it a little more to check the oil level just to be sure then I'll probably stick some injectors in it. I know I'm going to go thru Exergy for the injectors. I just can't decide on stock or 50 horse injectors. With my luck ill go with 50 horse and end up having to put a clutch in it.

 

50 Horse shouldnt be too concerning on your clutch unless its slippin already. Beware of the clutch if your tuning the truck at all for 100+ hp gains. Or you could get performance single or dual disk clutchs which are nice