Fuel Gelled?

So I think my Case 930 has gelled fuel so I am going to change the
filters next weekend and start it. The average high is supposed to be
about 58 degrees. I started it today and it still did it?s same thing it
runs for like 45 seconds to a minute then slowly dies. So I think the
fuel is gelled in the filters. What do you think?
 
If the filters are gelled then you will have to change them it usually has to hit 30 below for about a week straight before fuel will gel . But if it gelled during winter that could be your problem alright
 
They start blending about November here and stop about April so we usually don?t have to worry but if we get a week or 30 or 40 below and don?t run additive we have problems I was talking about blended fuel I have ran straight number 2 all winter with plenty of power service and not had a problem two winters ago we had everything but my pickup gelled up and it was ugly
 
winter blend ? highly unlikely the fuel is gelled. filters are plugged. fuel will not gell till in the - 30-40 range. plus once a diesel engine is running the diesel is circulated back to tank through the injectors and the fuel gets warmed up.
 
I disagree SV ultra low sulfur diesel will start to have trouble at +10 if you wait till -30 you will have a tank of honey
 
They very well could be gelled when you pull them out it will look like a thick snot substance on the filters it wouldn?t hurt to run a little power service or other fuel additive just to clean out the lines and injectors .
 
At this temp I doubt you have a gelling issue. Did you change the 3rd filter up by the radiator? All but the last year of p production have 3 filters and that last one gets missed a lot. You could also have a fungus in your tank. These new bio diesel fuels will grope fungus in the tank. It wouldn't hurt to add a biocide to the tank.
 
We had two trucks gel this winter at 15deg. You would think the boss would let us add a tank warmer to the ones that set outside.
 
I would also check the outlet at the tank bottom to make sure it is not getting plugged off with crap/sediment in the tank. The hand primer check valves and springs may be full of crap and won't allow fuel to get to the filters either. I have had the latter happen before.

Brad
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Fuel does not stay gelled when it warms up,all the jelling is caused by the parafine separating when it gets a certain temperature.When it warms up it goes back to liquid again.
 
(quoted from post at 23:19:53 04/21/18) Fuel does not stay gelled when it warms up,all the jelling is caused by the parafine separating when it gets a certain temperature.When it warms up it goes back to liquid again.

Dunno, but if "MT" means "Montana" it must be a LOT warmer there than a few hundred miles east.

Fuel may not stay gelled when temps warm, but filters clogged with wax or "parafine", as you call it don't magically resolve themselves when it warms up.

To the "O.P.", change the fuel filters and bleed the system before resigning yourself to throwing lots of bucks at the problem.. There's a HUGE chance that will resolve the issue.
 
It most certainly can, once the waxes are caught by the filter they don't magically disappear. I took this filter out on a minus 5 degree morning, it's still sitting on a shelf at work in a Ziploc bag and hasn't melted yet.
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As you stated in later post, if you tried to start it when much colder, then it could be gelled, replace the fuel filters, re-prime. Straight number 2 will gel at 10-15 degrees, blended is can be any blend, around here they only blend it to -10, I have gelled at -15 with blended, in MN they can blend it to -30, my favorite up there is Arctic Diesel from Fleet Farm.
 
Fellows I owned a fuel business for many years. Let's cut right through the old wives tales about fuel jelling. #2 stove fuel can jell up around 30 degrees if there is a cold wind blowing, same with truck stop or convince store #2 fuel. Basically the same stuff. Premium #2 will start gelling in the 22* range. Mix it 50/50 with #1 and you should be good to around -10, maybe -15 if there's no cold wind blowing. Straight #1 is usually good to -40. The only proven way to prevent jelling is blending fuel or running straight #1. I have been out along the road at any hour of the day or night topping off trucks and tractors with #1 fuel and changing filters. I always got the old story " I poured the anti tell in the tank before I left". Commonly called mouse P in the fuel business.
 
(quoted from post at 20:58:28 04/22/18) Fellows I owned a fuel business for many years. Let's cut right through the old wives tales about fuel jelling. #2 stove fuel can jell up around 30 degrees if there is a cold wind blowing, same with truck stop or convince store #2 fuel. Basically the same stuff. Premium #2 will start gelling in the 22* range. Mix it 50/50 with #1 and you should be good to around -10, maybe -15 if there's no cold wind blowing. Straight #1 is usually good to -40. The only proven way to prevent jelling is blending fuel or running straight #1. I have been out along the road at any hour of the day or night topping off trucks and tractors with #1 fuel and changing filters. I always got the old story " I poured the anti tell in the tank before I left". Commonly called mouse P in the fuel business.

Tom, the problem with your post is that the the drivers of the trucks that we see on the roadside on those cold mornings may think that they are OK because there is no wind, while they are making a 60 MPH wind as they drive.
 

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