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Allis Chalmers Discussion Forum

WD45 engine trouble (water in oil)

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05-11-2004 10:40:10

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I'm looking at a WD45 to purchase. It appears to have water in the oil. And also looks like oil is leaking from the head gasket on the outside of the engine. The engine has been pressure washed so I cannot tell for sure how much but I can see the oil.

What are the common reasons to get water in the oil and how hard are they to fix? Should note that the engine does miss on one cylinder, but it does needs a manifold so maybe that is the problem with that. Engine does not smoke. Price seems to be about would expect for the condition.

I would appreciate your comments.


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Dave K

05-13-2004 13:33:36

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 Re: WD45 engine trouble (water in oil) in reply to Dave, 05-11-2004 10:40:10  
If it was pressure washed it is quite possible water got into the oil from the breather cap on top of the engine if the person washing it did not seal the hole, also the oil filler. Easy fix if it is the problem, drain and change oil and see if it stays water free.


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05-13-2004 10:08:10

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 Re: WD45 engine trouble (water in oil) in reply to Dave, 05-11-2004 10:40:10  
Purchase a decent running tractor. Without knowing exactly how much the repairs will cost in money and time, I would pass this tractor up.

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05-12-2004 20:16:56

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 Re: WD45 engine trouble (water in oil) in reply to Dave, 05-11-2004 10:40:10  
If it missing, it is probably a cracked head around one of the valves. If it is a freeze plug, the antifreeze finds its way to the pan without going in the cylinders (push rod openings). If it is seals on the liners or a cracked block, it shouldn't affect the way it runs. Since it is missing, the missing could be something other than a coolant leak, Might check ignition wiring and change the plug in question. If missing problem persists, pull the head and examine. Cracks are often obvious around valves but you may need to magniflux if it isn't. I don't think sealers are worth a hoot for this problem - maybe useful for a radiator leak. The stuff collects like gunk in the bottom of the block and hurts block cooling. Good luck. (fixed 4 tractors with antifreeze in the oil problem - one was bad freeze plug, another a cracked head, another a cracked block and another bad seal rings on cylinders)

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05-11-2004 17:47:38

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 Re: WD45 engine trouble (water in oil) in reply to Dave, 05-11-2004 10:40:10  
Other possibilities are a rusted out or leaking freeze plug in the head, under the valve rocker arm in the middle of the head. Or a cracked block between cylinders, which I have heard of "fixing" by pouring a bunch of sealer in ther after the liners are in.

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05-11-2004 12:25:00

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 Re: WD45 engine trouble (water in oil) in reply to Dave, 05-11-2004 10:40:10  
Water in oil can be caused by either a bad head gastket, or the most probable cause would be bad liner seals. i would pull the pan and shine a light up there and if a liner is bad you will see it drip coolant into the crankcase. Good Luck

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