Noob question: 753 starts but dies in cold weather then glows

[Bilbo]

Hi. I'm new to skid steers. Bought a 753 G-series last month. 2000 year. When I operate it above 30 degrees or so I have no issue. For two days now I have started it in the mid twenties. I wait for the GLO timer to count down, multiple times, then start it. No issue there. Shortly after starting, about a minute and enough time to move it a ways down the driveway, it will stumble and dies followed by the GLO light counting down again. The first day it did this, it only died once. I put some fuel in it thinking it was out of fuel or something (didnt trust the gauge). Started up the next time and ran for the day. Tonight its mid twenties or so and I started it and again it died followed by GLO count. I start and it runs for approx 20 sec and dies followed by GLO count. Did this 3 or 4 times so I parked it. Any ideas?

 

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sounds like a fuel issue. when the machine dies the key is still on. there is a sensor that tells the glow plugs to come on or not. so when the machine is still cold and it shuts off, key is still on so they glows activate. thats normal. i wonder if it could be fuel pickup tube?

 

[bobbie-g]

sounds like a fuel issue. when the machine dies the key is still on. there is a sensor that tells the glow plugs to come on or not. so when the machine is still cold and it shuts off, key is still on so they glows activate. thats normal. i wonder if it could be fuel pickup tube?

Does not sound line a fuel gelling issue at 20F, although I think around 10F it can get to be an issue if the fuel isn't treated or winter blend (whatcha think about that, Tazza?!!!). Fuel filter change might be an easy thing to do to see if that makes a difference. Some folks have removed the fuel pickup line from the tank and poked it in a quart can of diesel, to see if the machine runs that way (eliminating possible pickup and tank issues). ---Bobbie-G

 

[Tazza]

Does not sound line a fuel gelling issue at 20F, although I think around 10F it can get to be an issue if the fuel isn't treated or winter blend (whatcha think about that, Tazza?!!!). Fuel filter change might be an easy thing to do to see if that makes a difference. Some folks have removed the fuel pickup line from the tank and poked it in a quart can of diesel, to see if the machine runs that way (eliminating possible pickup and tank issues). ---Bobbie-G

Thankfully my winters never get cold enough for my fuel to gel. It does sound like a fuel issue though. When it does it again, can you jump out and look at the primer bulb and see if it's flat?
I like the idea of a new fuel filter, start with the easiest things first.

 

[farmshop]

Thankfully my winters never get cold enough for my fuel to gel. It does sound like a fuel issue though. When it does it again, can you jump out and look at the primer bulb and see if it's flat?
I like the idea of a new fuel filter, start with the easiest things first.

I would start with a fuel filter. At 20-30 degrees diesel is getting thicker and harder to get through the filter. Try to locate some winterized fuel preferably blended fuel with number 1 light fuel. When you change the filter look at the fuel inside if it looks like Vaseline it has gelled or the biodiesel has settled out. If this is the case you need power service in the red bottle to ungel it. When cold when you start it leave it idle for a few minutes if possible extra fuel returns to the tank and it will warm it up

 

[7LBSSMALLIE]

I would start with a fuel filter. At 20-30 degrees diesel is getting thicker and harder to get through the filter. Try to locate some winterized fuel preferably blended fuel with number 1 light fuel. When you change the filter look at the fuel inside if it looks like Vaseline it has gelled or the biodiesel has settled out. If this is the case you need power service in the red bottle to ungel it. When cold when you start it leave it idle for a few minutes if possible extra fuel returns to the tank and it will warm it up

keep it simple. remove and inspect fuel pick up tube. it has a filter on the end, from there we shall see

 

[farmshop]

keep it simple. remove and inspect fuel pick up tube. it has a filter on the end, from there we shall see

While I agree with checking the pick up tube I wouldn’t say it’s simple. if it hasn’t been done yet might as well buy a new one before you even touch it. A person could unhook the fuel line between the primer bulb and filter and pump it see how fuel flow is

 

[Bilbo]

While I agree with checking the pick up tube I wouldn’t say it’s simple. if it hasn’t been done yet might as well buy a new one before you even touch it. A person could unhook the fuel line between the primer bulb and filter and pump it see how fuel flow is

It has been a while but thought I would update this thread. So I do not use this bobcat much at all. In the spring it ran fine without interruption. I loaned it out for about a month in May/Jun. While it was being used it started exhibiting the same behavior as in the winter. Running for a few min and then dying. I got it home and now have a hydrolic leak on the left side but that's another matter. I changed the fuel filter, no change in behavior. I removed the fuel line from the OUT side of the bulb and put into an external fuel source. Ran fine for 10-12 min and I turned it off. So I probably have an issue with the pickup that is inside the tank correct? I've seen a video of someone removing/reinstalling that fitting. Looks like fun. When I use the bulb to prime, I squeeze it and it take a bit for it to uncompress. Is this normal? Any thoughts? Have another issue where my airflow light comes on but I just put new filters on it, because the light was on.

 

[Tazza]

It has been a while but thought I would update this thread. So I do not use this bobcat much at all. In the spring it ran fine without interruption. I loaned it out for about a month in May/Jun. While it was being used it started exhibiting the same behavior as in the winter. Running for a few min and then dying. I got it home and now have a hydrolic leak on the left side but that's another matter. I changed the fuel filter, no change in behavior. I removed the fuel line from the OUT side of the bulb and put into an external fuel source. Ran fine for 10-12 min and I turned it off. So I probably have an issue with the pickup that is inside the tank correct? I've seen a video of someone removing/reinstalling that fitting. Looks like fun. When I use the bulb to prime, I squeeze it and it take a bit for it to uncompress. Is this normal? Any thoughts? Have another issue where my airflow light comes on but I just put new filters on it, because the light was on.

As it's taking time to uncompress when you squeeze the bulb, i feel you have a restriction in the pickup line or even the bulb. There is something between the bulb and tank, it should squeeze flat when pumping, yet puff back out quite quickly.
The symptoms did seem to sound like fuel starvation, this is showing something is restricting flow.

 

[Bilbo]

As it's taking time to uncompress when you squeeze the bulb, i feel you have a restriction in the pickup line or even the bulb. There is something between the bulb and tank, it should squeeze flat when pumping, yet puff back out quite quickly.
The symptoms did seem to sound like fuel starvation, this is showing something is restricting flow.

Thanks Tazza. Yeah the bulb certainly does not reinflate quickly. I'll pull the line that connects to the tank fitting and do a quick test to see if that longer length of hose or bulb is restricted before I go tangling with pulling that pickup tube out. I hear those are trick to remove/replace. Isnt it also possible that the tank has some crap in it? if so, is there a way to drain? Thank again.

 

[bobbie-g]

Thanks Tazza. Yeah the bulb certainly does not reinflate quickly. I'll pull the line that connects to the tank fitting and do a quick test to see if that longer length of hose or bulb is restricted before I go tangling with pulling that pickup tube out. I hear those are trick to remove/replace. Isnt it also possible that the tank has some crap in it? if so, is there a way to drain? Thank again.

Bilbo, under the machine between the two back tires you should see a 2" x 12" plate held in place by three bolts, 9/16" head I think. Remove the plate, hose out all the accumulated oil and dirt, and you'll see two rubber plugs with metal centers. Now go to the Bobcat store and buy two of those rubber plugs plus the metal inserts (go ahead, splurge), one for the fuel tank and one for the chain case. Pull out the metal insert in one of those, then the rubber plug, and you'll get a face full of either diesel or chain case oil. Pretty sure one is in metal (chain case) and one is in plastic (diesel). You might be able to reuse the plugs and rubber grommets, but from my perspective, just use new stuff and you won't have to mess with either for years. Good luck! Bobbie-G

 

[Bswwood]

Bilbo, under the machine between the two back tires you should see a 2" x 12" plate held in place by three bolts, 9/16" head I think. Remove the plate, hose out all the accumulated oil and dirt, and you'll see two rubber plugs with metal centers. Now go to the Bobcat store and buy two of those rubber plugs plus the metal inserts (go ahead, splurge), one for the fuel tank and one for the chain case. Pull out the metal insert in one of those, then the rubber plug, and you'll get a face full of either diesel or chain case oil. Pretty sure one is in metal (chain case) and one is in plastic (diesel). You might be able to reuse the plugs and rubber grommets, but from my perspective, just use new stuff and you won't have to mess with either for years. Good luck! Bobbie-G

Your pick up in the tube has a small screen filter on it, it's not is tricky as you might think. Raise the cab and dive in head-first I usually raise the arms in the air and support them and you can lean over the side to get to the pickup tube as well. You'll see two fittings in the fuel tank one is the pick up in the front and the one behind it is the return line, just use a pry bar or a long screwdriver twist the fitting towards you in pry it right out. You'll have about 6 inches of hose connected to a 1 inch screen filter. Not only is this a screen filter but it's also a check valve. More than likely that's where your problem is. Trust me, it's not that bad just yank it out and see what the problem is.