Engine repair

Dayong · Nov 7, 2017

Hi, I could use some advise before I make the next move. I made a big mistake when combining with my gleaner F. first day I checked the water and it was good. the second day I didn't check, so I don't when I ran it without water but I did for a while. I managed to drive it back in the barn and now that's where it sets. I put water back in and it still holds water, even 1 1/2 years later. I tried to start it with no luck. I then checked the spark and gas which are both good. I then checked the compression. Now this is where it is bad. Cylinder closes to the fan is 30psi, the second is 60psi, third 90psi, and forth 120psi, then I stopped checking. I can't get the motor off the combine where is set. I am good at taking things apart but not much of a mechanic for putting things back. I could probably take the head off and get it checked (I could probably put the head back on)and go from there? what do you think? appreciate any help thanks

old · Nov 7, 2017

Put some oil in each cylinder say maybe a table spoon. Do #1 first and put the plug back in and slowly turn it over. Check #2 and see if it has oil on the plug. If it does you blew the head gasket. But it could also be stuck rings from siting that long so if you do not find a blown head gasket fill the cylinders with ATF and let it sit a week of so then pull the plugs back out and spin it over and check compression

Steve@Advance · Nov 7, 2017

How hot do you think it got?

Was it blowing steam? If so, it may have been hot, but not too destructive.

Was it completely dry, no steam, hot smell, clattering? If so, may have had some deeper damage than just the head gasket.

That it has sat for a year and a half without being started, and a possibility there may have been coolant in the cylinders, try putting about a 1/2 teaspoon of oil in each cylinder, spin the engine through, check the compression again. If it came up, try to start it again. If you have some cylinders with 90+ compression, it should at least start and run enough to do some further diagnosis, or get it where you can work on it. Be sure to check the oil for coolant before running it too long.

Removing the head is not that difficult. Once repaired, and the deck surface clean, equipped with some basic knowledge, torque specs, and valve lash specs, should be a doable job.

Again, a lot depends on how hot it got. Possible the cylinders could have seized. If excess blow-by, knocking, could be other problems.

Bob · Nov 7, 2017

Checking the compression on an engine that has been sitting unused is all but meaningless.

Typical overheating damage would be result in coolant in one or more cylinders, or the "basement".

If you are not seeing that, the reason for it not starting may be unrelated to it being overheated.

Of course, ripping it apart and throwing money at it with no diagnosis ahead of time is always a viable option. IF your checkbook is big enough for that.

Engine repair

Dayong

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old

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Steve@Advance

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Bob

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