My Tractor Forum banner

Siezed up motor

2697 Views 19 Replies 14 Participants Last post by  km3h
Do you think a motor that is siezed up from setting would need a rebuild or if it would be ok if you got it to free up. I found a good deal on a 4020 but the motor is siezed up, the owner said it ran great until he parked it and hasn't used it in 2 yrs so now the motor won't turn over.
Thanks, Mark
1 - 20 of 20 Posts
I think you have to assume that the tractor needs another engine. Even if the seller is being honest that it ran when parked you have to wonder why it is seized now. If excessive moisture got into a cylinder the rings could be stuck in the piston even if you can free it up. That would require a rebuild (potentially expensive) or another engine. You really can't tell until you get the engine running or tear it down what you are going to run into. If you can do your own work that helps, but you could still be looking at some bucks to get it running right.

Good luck.

JN
See less See more
I agree with jnelson. Prepare for the worst then hope for the best. If it is enough of a deal that you wouldn't mind rebuilding or replacing the motor, then go for it.
Buy it assuming its a goner pull plug and fill with diesel let it soak over the winter and slowly try turning over by hand a little at a time its free to try.
That's kind of what I was thinking I think I'll pass on it. By the time I rebuild or replace the motor it wouldn't be a good deal. Thanks for the response I was looking for some second opinions.
Mark
I would say part ways very politely and let him know to keep in touch. Check in once or twice a year and maybe he will just want it gone at some point.
I just came across an old tractor that was sitting for years and I shot it up with wd40 and within a half hour it was turning over fine...good luck i guess!
A little MMO in the cylinder could free it up, but when talking price, you should assume the engine has no value, or you may be disappointed later.
you need to sell me that tractor for $100...I'll have it running this afternoon...So, long as it is parked in a dry place I would NOT assume the worst...if it were stored in a wet place outside for example then I'd take the heads off before I decided anything, what 10 or so bolts? Not very tough? Additionally if anyone remedys it by shooting anything into the cylinders without looking that is a bad call...how does the oil in the crankcase look? everything else? Pop the heads off...simple and easy. If it is shot, rebuild it or replace it?
See less See more
It would be funny to pass on a deal that could just be a bad battery or something silly like that....." It sat for 2 years" , and now it won't start, not much to go on there to say if it's seized or not.
Really it all boils down to whether or not it really fails on you after you get it free (if it is frozen). Chances are if you just free it up and are able to run it, its longevity is severly in question. But...if you don't care and the deal is that good, free it up and run it till it goes and replace or rebuild. I used to run sandrails with VW motors when I was out west and those were a dime a dozen. In that scenario I had a simple motto: "Drive It Like You Stole It". If it goes then just be prepared to deal with it. imho.
See less See more
Personally I would go for it as long as the price reflected the unknown state of the machine.
That,s how I got my 3018 with the onan powerhouse. Guy said it would not turn over. So I bought the tractor with less than 200 actual hours on it and a troy built horse tiller for $500.00 went home put a used battery from another tractor in it, some fresh gas and have never looked back.
Yeah I passed I've got a 4016 that runs good. I thought for the price of $550.00 it would be something to look into to fix and sell but if it got into a engine rebuild it wouldn't be worth it. Plus it's over 2hrs away from me and he can't seem to send any pics so I can see what kind of shape it's in, so I figured i'm going to save my gas and time.
See less See more
smoke
i have done two in the last year and half.
both freed up in about an hour.
BUT, both will need to be bored ( pitted and rusty cyl. walls)
good luck. boomer ( the used onan engine parts guy )
you need to sell me that tractor for $100...I'll have it running this afternoon...So, long as it is parked in a dry place I would NOT assume the worst...if it were stored in a wet place outside for example then I'd take the heads off before I decided anything, what 10 or so bolts? Not very tough? Additionally if anyone remedys it by shooting anything into the cylinders without looking that is a bad call...how does the oil in the crankcase look? everything else? Pop the heads off...simple and easy. If it is shot, rebuild it or replace it?
I hear what your saying, but if you pull the head off in front of the seller before you buy the thing, the price may go up because he thinks he struck gold. Everyone has an opinion when it comes to buying. I've bought ALOT of tractors that I spotted sitting in backyards rotting away. When I get an idea of what they want for it, I'll make an offer, and say "I'll take it jut the way it is, no need to get a battery and fresh gas since I'm a gambling man." I find most people really don't want to be bothered and take my offer. Sure I've been burned, but not too bad, I know I"ve done very well too. I have an army of good running $25-$100 tractors!:fing32:
See less See more
Boomer makes a very important point. A lot of people here are offering advice on how to free up the engine. But just because you are able to free it up does not necessarily mean that it will be in runnable condition. Personally I think that most conditions that would cause the motor to be truly seized (not just suffering from a weak starter or battery) have been subjected to some type of condition that likely will affect the longevity.

If you are looking for a project then this might be a good opportunity. If you are considering what you could resell the tractor for once you have spent enough money to repair it properly you could come out on the losing end.

JN
See less See more
I've gotten many engines from the junkyard that was stuck...
About 1-2 out of 10 goes back to the yard...
About 1-2 out of 10 goes back to the yard...
Your yard or the junk yard? What percentage of them operate reliably as-is long term vs those that require further attention?

JN
When you buy a tractor like this, you do so with the idea that the engine is in need of a rebuild. Like others have said, the engine can be freed up and it may run but most likely there is damage to the cylinder and rings.
1 - 20 of 20 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top