Wisconsin engine ??

herk · Feb 24, 2022

Hello I bought a 1200 OMC skid loader with a recent overhaul, the previous owner said it stated knocking and he shut it down and parked it , the engine has been sitting out side covered ,it is now stuck,(this is not a problem for me I have dealt with lots of stuck engines ) I started to pull the engine out today and removed the coil wire and looked to see if it had electronic ignition , it didn't, points are very burnt and the distributer is loose, Can turn it very easily , My question is can bad points and a loose distributer cause sever engine knock , I think it is possible but I have not had much experience with working on Wisconsin engine I have been around them a lot but never wrenched on them .. Thanks Bryan

Loosehandle · Feb 24, 2022

Well if it's stuck very bad it's going to need to come apart anyway.

wore out · Feb 24, 2022

If the distributor got turned in the "advance" direction that could cause "spark knock", but would likely make the engine "kick" against the starter during cranking, as well.

If the oil hasn't been drained it would be interesting to drain the oil and see if any metal particles come out.

Of course, if it has sat for a long time any bearing metal could be pretty well settled out and sitting on the bottom of the oil pan, or even frozen in place if the machine is till outside and there's any moisture at all settled out under the oil.

ss55 · Feb 24, 2022

Yup, timing way off can do that. If someone put the ignition wires on out of order it will act strangely too. Don't take it for granted that they are correct on a new to you non-running engine.

redforlife · Feb 24, 2022

Recent over, and then knocked, parked, and now stuck? I think I'd have more concerns about (WHY) it is stuck, rather than timing being a little out of wack.
Can timing being off cause engine knock? Well, yes.
Can engine knock be unrelated to timing and cause something to freeze up or break and get all jammed up so engine won't even turn because it wasn't put together right??? Well, yes. Wouldn't that be your bigger concern?? It sure would be mine. Especially since you say engine was covered (no rain water).
Just hard to believe engine knock was from faulty timing, and also be cause of the now froze engine from just sitting there for awhile. Froze engine being caused by the knock leading up to being froze would make way more sense, than this all un-raveling from a simple timing problem.

casecollectorsc · Feb 24, 2022

Quite simple to remove the heads on a Wisconsin engine to see if it is rusted...may not have to replace the head gaskets, use them over for this experiment.

crsutton81 · Feb 24, 2022

Yes, it will knock bad and cause them to run way hotter than necessary.

used red MN · Feb 24, 2022

In my opinion just the distributor be loose and the timing off could cause it to knock, but the knock would be the pre ignition or detonation ..pinging.. type of knock. I would say the average person would not stop using a machine from that type of an engine noise. Yes, the timing being off and overheating could cause a piston to burn down past the rings which may have caused the knocking if the piston scored and was loose in the bore. I would venture a guess that you will find some other problem that will make the engine removal a validated requirement.

Fritz Maurer · Feb 24, 2022

If you find a burned out rod after pulling the engine, strip it down to the bare crankcase. The oiling system is a pump/splash arrangement, in which a jet of pressurized oil is directed at each connecting rod. If the oiling system is not scrupulously clean, one of these jets can plug and cause a failed conn rod bearing. Depending on its age it may have Babbitt rod bearings; Wisconsin was still running these rods long after everybody else went to precision inserts. The rods used to be available on an exchange basis, but today you would have to find someone to pour a new bearing for you. But if it turns out to be a VH4D it will more than likely have precision inserts.

Phil-mar Farms · Feb 25, 2022

Before you put a wrench on a head bolt you should give each head bolt a sound rap with a stout punch and a good size hammer. This breaks the rust on the bolts and keeps them from snapping off

herk · Feb 25, 2022

Hello thanks for the response, just to be clear the engine be came stuck from sitting . Thanks Bryan

Wisconsin engine ??

herk

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Loosehandle

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wore out

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ss55

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redforlife

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casecollectorsc

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crsutton81

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used red MN

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Fritz Maurer

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Phil-mar Farms

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herk

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