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John Deere Tractors Discussion Forum
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SMOKIN' D

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BUBSDAD

01-08-2004 05:01:17




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MY 1944 D SMOKES WHEN STARTED AFTER SITTING, IT BELLOWS WHITE SMOKE FOR ABOUT 30 SECONDS OR SO WHEN STARTING IF IT HAS SIT FOR A DAY OR TWO. WHEN TURNING IT OVER WITH THE COMPRESSION RELEASES OPEN BEFORE IT STARTS NO EXCESS FLUID COMES OUT. BEFORE I TEAR IT DOWN DOES ANYONE HAVE A TIP ON WHAT TO LOOK FOR, PLACES CRACKS ARE LIKELY TO BE ETC...




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John T

01-08-2004 07:15:07




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 Re: SMOKIN' D in reply to BUBSDAD, 01-08-2004 05:01:17  
Mornin Bub, I wouldnt tear her all down just yet, even though you may have to end up doing that. Heres a few question and things to look at. That white smoke/steam out the stack for an excess time period sure sounds like waters gettign into the combustion chamber from somewhere.

1) Have the radiator topped off so you can see, and when running, do a lot of air bubbles keep rising??? If so and shes using a lot of coolant, then it may be more serious like a leaky head gasket or a crack etc.

2) When shes sat or used a good period, does the coolant level drop considerably (assuming youre not runnign any water injection). And make sure its not dripping somewhere onto the ground.

3) Is the oil eventually becoming gray or milky colcored and increasing in level??? (If so, waters mixing into it)

4) Has she sat in the rain long periods lately??? You might remove the air cleaner bowl to insure its not water filled and sucking it in ????

5) If shes bubbling air bubbles into the radiator and using a lot of coolant (but not leaking it) and the air cleaner is water free, she may have a leaky head gasket or a crack.

6) You might try and torque down the head just to see where it was and if it helps????

If she still uses water and smokes badly white even after a head re torque, give it 2 aspirins and call me Monday mornign at the office lol.

Good Luck with the Old Girl n God Bless ya

John T

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Clooney

01-08-2004 06:38:48




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 Re: SMOKIN' D in reply to BUBSDAD, 01-08-2004 05:01:17  
BUBSDAD, while it could be something major like a cracked cyl head, leaking head gasket, block porosity, or other major casting problem.. It could also be something simple like water in the air cleaner cup [common if the tractor is left outside], water in the crankcase from rain or condensation, or even water in the gasoline.. It might even be a leaking water valve at the carb..

~Are you loosing any coolant? If so suspect the water valve, or head gasket, or a cracked head...

~If you aren�t loosing any coolant you might have water in the air cleaner or crankcase..

~You might try draining the radiator, then letting the tractor sit for a few days, then starting it.. If you still have the white smoke it probably isn�t from leaking coolant�

~Remember a little light grayish/white smoke on startup is normal on those big cold cylinders if they condensate a little inside while parked..

~If you want to get a little more technical you could remove the spark plugs, then back off the valve adjusters , then modify an old spark plug to take an air hose fitting, then pressurize the cylinders & look for air bubbles in the radiator..

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