I noticed the oil level was too high one time I checked the oil between oil changes, and thought I must have just overfilled it last oil change. I dumped some oil out to bring it to the full mark. I just checked it again and its back up to being overfull again. I cant particularly smell gas in the oil, but it does seem on the thin side, but it is nearing another oil change. Coolant level is consistent.

It also was ticking (like a lifter tick, not exhaust leak) when I started it today, but it had sat for just about a month. It quietened down within 2 minutes of idling, but I shut it off and restarted it, and the tick was completely gone.

Do the injectors ever cause trouble? Could one of them be leaking fuel when the truck is shut off?

 

Nobody's heard of this before?

 

Fuel in oil is only one thing. Bad piston rings.

As the injectors put fuel in the cylinder, the piston comes up and the valves close getting ready for ignition but by that time, fuel has already made its way past the piston and as the piston comes back down, it pull the fuel down with in and down past the crank in the oil pan.

Resolution? Engine rebuild

Diluted oil with fuel means thin oil and less protection on the bearings also.

 

I have my doubts its the rings. If the fuel has time to leak past during the intake/compression, I would have quite low compression, and lots of blow by, would I not? Plus its only got ~65000 miles.

I'm thinking maybe an injector is leaking somehow (if thats possible) and emptying into a cylinder after the truck is shut off, then the fuel is making its way past the rings?

 

Once the fuel pump is off, there is a static pressure of about 50# on the fuel rail. If you ever have depressed the valve on the fuel rail to discharge the pressure then you would see it takes a fraction of a second to discharge and once it's gone, there is no pressure until the key on the fuel pump. Thus, an injector, should not be the culprit.

You see this issue on small engines mainly and some bigger ones where the rings never worn in and seated with the cylinder sleeves. Go check some small engine boards that don't have injectors and see what they say. I'm not being sarcastic, I'm being serious. I know sometimes things can be misinterpreted but seriously, go check some small engine boards.

 

I understand it with small engines - with carbs - the needle doesn't seat properly and fuel flows through the carb, into the cylinder past the rings to the crank case. I also believe that it could be the case if the rings didn't seat properly, but it seems a stretch for it to appear now. The rings never seated properly, and its starting to put fuel into the crank case at ~65000 miles and has never used oil?

I changed the oil, because it was due. I filled it exactly to the top of the hash marks, and checked it a million times to be sure. I took it for a short trip ~10 miles and parked it overnight. I checked it again before I took it to the field ~5 miles and it was in the same spot on the stick. I parked it back exactly where I checked it before, and it is now overfull. So it has ~15 miles on the oil, and it is obviously overfull.

I'm going to put a pressure gauge on the fuel line, try to pinch the line back to the tank and see if it leaks down. If it does leak down, I guess I'll have to pull the injectors and give them all pressure again out of the cylinder and see which is leaking. If it doesn't leak down, I'll do a leak down test on the cylinders to test the rings.

 

The carbs on both my mower and bike don't feed fuel unless the key is on because the needle in the bowl is electro - magnetically controlled.

Key off - needle closed.
Key on - needle open

But either way, please let us know what you find

 

I have experienced this with a ford explorer before. It was the FPR fule pressure regulator. It was bad and allowed gas to flow and filled up the intake as well as the cylinders. I litterlly had to drain the throttle body and oil pan of all the gas. Not sure if it could happen with a didge. I am new to my Ram.

 

It is entirely possible that one of the injectors is sticking occasonally. As far as the return line from the fuel rail, you won't find one------goes to engine only. the fuel regulator is integral with the fuel pump, and unfortunatly, the fuel filter also. The trick will be finding out which injector, I could only guess that you could pull the plugs one by one after it happens, see which cylinder is wet.