New Holland TT75A fuel system problems

[proberts]

About a month ago, I started having issues with the fuel supply on my TT75A tractor. At speeds over 2000 rpm, the tractor acted as if it was starving for fuel and would blow white smoke and a strong diesel odor that would irritate my eyes. I first changed fuel filter and air filter, no luck. I then found some particles which look like rust flakes in the strainer of the transfer pump. (I had purchased an old storage tank in Feb, but thought I had it cleaned out pretty well). After blowing out the strainer, the tractor ran okay for a couple of days and then started doing the same thing again. I drained the fuel tank, blew out all the lines and banjo fittings up to the injector pump, and blew out the return line from the injector pump to the tank. I have replaced the hose clamp on the fuel line on the suction side of the transfer pump and bled the injectors.
One thing I notice is when the tractor runs okay, it will idle aroun d 600 rpm but when it is acting up, the idle speed drops below 500 rpm and the engine will die within 30 seconds or so.

 

[Jerry/MT]

About a month ago, I started having issues with the fuel supply on my TT75A tractor. At speeds over 2000 rpm, the tractor acted as if it was starving for fuel and would blow white smoke and a strong diesel odor that would irritate my eyes. I first changed fuel filter and air filter, no luck. I then found some particles which look like rust flakes in the strainer of the transfer pump. (I had purchased an old storage tank in Feb, but thought I had it cleaned out pretty well). After blowing out the strainer, the tractor ran okay for a couple of days and then started doing the same thing again. I drained the fuel tank, blew out all the lines and banjo fittings up to the injector pump, and blew out the return line from the injector pump to the tank. I have replaced the hose clamp on the fuel line on the suction side of the transfer pump and bled the injectors.
One thing I notice is when the tractor runs okay, it will idle aroun d 600 rpm but when it is acting up, the idle speed drops below 500 rpm and the engine will die within 30 seconds or so.

With your symptoms, it sounds like fuel sarvation.

The first thing I'd do is put a filter on your storage tank outlet line to prevent crap and corruption from getting into your fuel system. Better to change that filter than have you tractor fuel system continually contaminated.

Do you have a water separator in addition to the fuel filter and the lift pump screen? It has a filter in it so it may be clogged, so check that. If the system is badly contamiinated, it's possible that your newly replaced fuel filter is clogged, so check that also. Then you might consider draining your on board fuel tank because it's probably contaminated now.

Fuel contaminated with foreign matter and water are the bane of diesel fuel systems. Do everything you can to keep the fuel you put into your tractor free of water and dirt and let the on board filtration take care of what the storage filters miss.

 

[proberts]

I do have a 10 micron filter on the storage tank. I did check the last fuel filter I removed and it had a few small particles in it including 2 gnats.

I'm starting to believe that the transfer pump may have some debris in it or that it is going bad. Each time I bleed the system using the bleed valve on top of the fuel filter housing, the tractor will run okay for a few minutes and then start blowing white smoke but only at rpm's over 2000.

 

[mcblay]

I have a new holland tractor. On the metal info. tag it says it is a Model #4023010E210501 I can't find any info. on this model #. Could someone give advise as to what model and year this tractor is. Thanks.

 

[Jerry/MT]

I do have a 10 micron filter on the storage tank. I did check the last fuel filter I removed and it had a few small particles in it including 2 gnats.

I'm starting to believe that the transfer pump may have some debris in it or that it is going bad. Each time I bleed the system using the bleed valve on top of the fuel filter housing, the tractor will run okay for a few minutes and then start blowing white smoke but only at rpm's over 2000.

If you have a 10 micron filter on the fuel supply tank then that's not the source of crud after you changed the filters and cleaned the screen. Your problem is onboard contaminations. I asked before if you have a water separator Check that if you do. The tank on my TD95D was contaminated with water and I continually drained water out of the separator. I pumped the tank and got more water out
but I know I didn't get it all.

Do a search of the archives. Some guy on here with a NH tractor and fuel starvation problems found some plastic contaminations from the manufacturing process on his plastic fuel tank and he had similar symptoms to yours.

 

[proberts]

Yesterday, I removed the fuel filter again and examined the contents of the fuel and again found five small particles in the fuel which looked to be dark rust flakes. I have already drained the fuel tank on the tractor and flushed it out and refilled with filtered fuel.

I have talked with the deisel fuel supplier and he mentioned an algae that grows in diesel fuel and may look like rust particles, but will mainly look like spider webs in the fuel and the fuel will look a little darker and gelled a little.

Anyone ever here of this algae?

 

[Jerry/MT]

Yesterday, I removed the fuel filter again and examined the contents of the fuel and again found five small particles in the fuel which looked to be dark rust flakes. I have already drained the fuel tank on the tractor and flushed it out and refilled with filtered fuel.

I have talked with the deisel fuel supplier and he mentioned an algae that grows in diesel fuel and may look like rust particles, but will mainly look like spider webs in the fuel and the fuel will look a little darker and gelled a little.

Anyone ever here of this algae?

Yes, it's common and is particularly bad in the SE with its warm and humid climate.The critters live in the fuel-water interface. It's not only a problem with tractors; it's a problem with aircraft, boats, etc that use the heavier distillate fuels. Power Service makes a biocide to control it and there are others. they also make a product called Kleen Tank(?) I believe. There are any number of companies that make additives that contain biocides to control algae.

 

[proberts]

Replaced the transfer pump this AM and still same thing. I seem to have a restriction somewhere, but can't find it. the dealer is going to work on it this PM.

 

[1953viking]

Help! I am so stumped I can't see straight. My new holland tc45 800 hours of running fine.Got new fuel and a couple days later, wouldn't hold a rpm setting and would finally die. Would restart but die again, after 5 hours of so would start enough to get into the barn. Fuel looks good, changed filter anyway, good flow at the filter. Took off fuel solenoid? Small tomato can size w a wire plug going into the injector . The plunger goes swishy. Is that normal? Any help would be really appreciated, really appreciated!

 

[Jerry/MT]

Help! I am so stumped I can't see straight. My new holland tc45 800 hours of running fine.Got new fuel and a couple days later, wouldn't hold a rpm setting and would finally die. Would restart but die again, after 5 hours of so would start enough to get into the barn. Fuel looks good, changed filter anyway, good flow at the filter. Took off fuel solenoid? Small tomato can size w a wire plug going into the injector . The plunger goes swishy. Is that normal? Any help would be really appreciated, really appreciated!

You're hijacking this thread.You really ought to start a new one for your machine. However......

Check the tank strainer and the line to the filter. Have you been draining the water separator (not all fuel systems have a separate one) and/or the bottom of the fuel filter. You can collect water there .

Did you bleed the fuel system after you changed the filter? Unless your owners manual says you don't have to, you should always bleed the fuel system after you open any fuel line.

Why are you messing around with the fuel shut off solenoid? Is it not opening when you switch the key on?

 

[rthompson55]

Replaced the transfer pump this AM and still same thing. I seem to have a restriction somewhere, but can't find it. the dealer is going to work on it this PM.

Hello, I joined this site this morning, hoping to find an answer to my fuel problem with my td75d new holland. It sounds like the same issue you have explained with yours. What did the dealer do to resolve your issue.

 

[rthompson55]

I guess this is an old thread, but what I found wrong with my tractor was the screw type hose clamp at the fuel tank had never been tightened from the factory or had "viberated loose". It did not manifest itself until the fuel supply hose aged enough for the motor to start sucking air. Had the fuel tank hinged down so I replaced the fuel line and "tightnd" the hose clamps. Tractor runs-out and works better than ever!

 

[NHPartsman]

I work for a New Holland and Mahindra dealer in East Texas and we have a lot of customers with TT75A tractors. These are mainly on pipeline mowing crews that put a lot of hard hours on those units. Here lately we have found a lot of injection pumps with rust and gunk in them and they have been removed then rebuilt here local. They present the same symptoms as your tractor and we have been through all the checklist for problem solving. Look at your injection pump and check it. We also have installed an extra inline fuel filter to help in the future.

 

[Overkill]

Having the same problem with my td80d... So frustrating, finally got it started and loaded on my trailer. Praying I don't need a new fuel injector, I'll keep you posted.

 

[rnichols88]

Having the same problem with my td80d... So frustrating, finally got it started and loaded on my trailer. Praying I don't need a new fuel injector, I'll keep you posted.

I just joined so I'm new. I also have a td80d and it is blowing white smoke at 1500 to 2000 rpms and when i bring it to an idle it will either idle low or die. I put new filters and a new lift pump and bled everthing I can and blew all the lines out. If anyone has an idea or knows whatthe problem is please let me know.

 

[Jd5203]

My boss has a NH TN75DA which was doing the same things as you all said, we put on a new lift pump and that didn't cure it. Had the dealer stumped and wouldn't listen to what I was telling them. Ended up putting on a new injection pump and it has worked right ever since according to him. It may still be quitting but he won't tell me because my family runs John Deere and I always give him crap about his New Holland breaking. Hope this helps.

 

[rnichols88]

My boss has a NH TN75DA which was doing the same things as you all said, we put on a new lift pump and that didn't cure it. Had the dealer stumped and wouldn't listen to what I was telling them. Ended up putting on a new injection pump and it has worked right ever since according to him. It may still be quitting but he won't tell me because my family runs John Deere and I always give him crap about his New Holland breaking. Hope this helps.

Thanks I actually got it going yesterday! I was afraid I might need a pump but it was sucking air at the first filter that looked like it was bent. I bypassed it and its good as new! Going to get a new filter bracket and put it back on with a new filter.

 

[Jd5203]

Glad to help, that tractor made me walk 3 different times, 5 miles each time, I was usually cooled down or to worn out to holler when I'd get back otherwise I might not have a job. The dealer had it at there shop 5 times in 12 hours of use in one month. I don't like New Holland, but mainly that is because of the two tractors he had, this one mainly, it has a terrible cab layout on it, and plus I broke my finger and tore a tendon on my finger ($5000 surgery alone) on his NH tedder because of poor design. But just like John Deere, there's good ones and bad ones that come out of the shop. Hope it doesn't give you any more trouble and years of service.

 

[rnichols88]

Glad to help, that tractor made me walk 3 different times, 5 miles each time, I was usually cooled down or to worn out to holler when I'd get back otherwise I might not have a job. The dealer had it at there shop 5 times in 12 hours of use in one month. I don't like New Holland, but mainly that is because of the two tractors he had, this one mainly, it has a terrible cab layout on it, and plus I broke my finger and tore a tendon on my finger ($5000 surgery alone) on his NH tedder because of poor design. But just like John Deere, there's good ones and bad ones that come out of the shop. Hope it doesn't give you any more trouble and years of service.

I would be upset with new Holland too! Mine has been a good tractor with just this one issue. They all have there problems. Seems like some worse than others. Best of luck to ya friend thanks for the help!