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  1. #1
    New Member
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    Aug 2005
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    21

    Default Engine problems

    I have a TL80A. The engine is not running smoothly. The exhaust makes a series of "popping" noises, that sound similar to an old JD 2 cylinder, at 2200 rpm and above. There is also some surging of the engine, sometimes longer surges then sometimes shorter surges. Also when rolling hay yesterday, sometimes the engine would lose power.

  2. #2
    Veteran Member
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    Jul 2005
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    Southwest VA

    Default Re: Engine problems

    i would check the fuel filter first.

  3. #3
    New Member
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    Aug 2005
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    21

    Default Re: Engine problems

    I changed the filter Saturday. The problem doesn't exist all the time I'm using it. I have been moving hay today and haven't noticed the problem. It was bad yesterday.

  4. #4
    Veteran Member
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    Jul 2005
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    Southwest VA

    Default Re: Engine problems

    i hate that intermittent crap. good luck.

  5. #5
    Elite Member jonyyuma's Avatar
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    Sep 2010
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    2,972
    Location
    35 miles North of Memphis,TN
    Tractor
    kubota L3000dt, ford 8n1952

    Default Re: Engine problems

    Wonder if it could have been a bit of moisture? First off, I thought of valve train, when you said" Popping in the exhaust"?
    Okay, Legal disclaimer: Old but not senile, definitely do not have the answer to everything!

  6. #6
    Veteran Member Jerry/MT's Avatar
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    Feb 2008
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    1,963
    Location
    Western Montana
    Tractor
    New Holland TD95D, Ford 4610 & Ferguson TO-30

    Default Re: Engine problems

    Quote Originally Posted by tazewell View Post
    I changed the filter Saturday. The problem doesn't exist all the time I'm using it. I have been moving hay today and haven't noticed the problem. It was bad yesterday.
    Have you checked the tank and the water separator? Water in the fuel (condensation or contamination) is a big problem with diesel fuel. Condensation generally is a problem in areas where the humidity is frequently high and contamination can occur anywhere. Algae is a problem in warm, humid climates as bacteria can live in the water/fuel interface. Clumps of algae can clog the tank strainer intermitently causing problems like you are experiencing. So can the normal crap and corruption that you find in many farm fuel tanks. My NH manual recommends draining and flushing the tank every so many hours or so many years.

    I bought a tractor from Southern New Mexico where is pretty dry year around. It had water contaminated fuel in it and when I went out to use it a below freezing temperatures, my water separator froze(that is the water did) and I had a run down. Never got a warning light! I changed the fuel filter and the water seperator and then I used a siphon pump to try to remove the water from the bottom of the tank and I drained the water separator before and after every use. I got an about 3-4 ounces of water when I drained the old sperator and subsequent got 1-2 ounces of water out of every draining of the new separator. I got nothing out of the filter but fuel. I figure the guy had a contaminated fuel tank or the fuel supplier was sloppy about the way he handled fuel. Certainly could have gotten some condensation from our local conditions but not in just a few days.

    I believe your tractor has a lift pump that pulls fuel from the tank through a water separator and then pushes it through the fuel filter and on to the injector pump. The lift pump may have a screen on it that may have some crud on it. A partial clog would limit fuel flow during high fuel demand but not necessarily during periods of low fuel demand.


    I believe you also have a solenoid fuel valve that shuts off the fuel with the key switch when you shutdown. Look for a loose connection in that circuit. Some of the interlock switch also control the fuel valve so check those out if that is applicable.

    Do you have a Tier II engine? Some of them have some sort of timing mechanism that retards the injector timing during warm up to reduce exhaust emmissions. Look into that.

    There's no definitive answer to the problem you are experiencing. You'll just have to sort through the possibilities until you find what the root cause is. I hope I've given you some things to help you in your search.

  7. #7
    Platinum Member Raspy's Avatar
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    Dec 2006
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    875
    Location
    Northern Nevada
    Tractor
    NH TC29DA Bolens G14 Skytrac 5028 Dodge Cummins Jeep Rubicon Grizzly 700

    Default Re: Engine problems

    Surging and loss of power can be caused by any delivery problem like a filter, tank pickup strainer, lift pump, water or whatever. But not the popping.

    Is there any chance some gasoline got into the tank? It will definitely cause loss of power and surging. Ahem.......... it did on mine

    if this is happening only when hot and you have a large number of hours on the engine, I'd look at the valve clearances next.

    It doesn't seem like an injection problem unless if you have electronic injectors and computer controlled timing.
    John

    I only exaggerate enough to compensate for being taken with a grain of salt.

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