Case 1845c question! Fuel Starvation?

[Flying_gage]

Hey all,



Frickin winter! Another 6 inches here in the mid west! Although it does give me a reason to get out and play on the skid steer.



Here is the problem that started about 10 hours ago. It started "surging" while at about 3/4 idle. I changed the fuel filter and all was well. Then it did it again on my next usage about a week later.



It was still single digits and I am pretty certain I had some summer fuel in the tank. So I filled her up with fuel and hit it pretty hard with a "heet" type product, (formulated for diesel of course). Ran good.



Tonight after about an hour of full throttle plowing it started again. It actually died this time whereas before it would surge for a bit and stop. She fired right back up, but was surging. I backed the throttle off to about 1/2 and left it there for about 5 mins and she ran fine.



So what the F@#$? Any thoughts? I guess I should mention it has a cummins 4b with about 4500 hrs. It seems as though it is a fueling problem, but I am kind of at a loss. I just don't want it to be a injection pump going bad... ...



Thanks in advance,

Pete

 

[nickleinonen]

VE or P pump?

doesn't sound like a pump problem if it is a p pump. the rotary ve is a mystery to me [i learned it in school but don't remember how it works anymore]

 

[PToombs]

Sounds like the fuel is gelling. Did you change the inline strainer too?

The other option is to put heat on the fuel tank, salamander or something. Magnetic heat element on the bottom, just some thing to try to warm the fuel and see if it helps.

If it's in the single digits, we use 911 along with the regular Power Service at work. Just as a preventative measure.

 

[Flying_gage]

Thanks Guys!

I have since plowed probably another ten hours without the problem. Go figure? Once it warms a titch I will go out and take things apart and clean everything up.

The possibility that is floating around in the back of the my head is where I purchased the fuel. At about the same time that I fueled my skid, I fueled my truck. This was done at the local walmart. In my truck, I lost 2mpg on that tank! I have since fueled up at the local truck stop and my mileage came back... ...

We'll see

Pete