L3901 blue smoke help!!

[demon13815]

So I bought a used l3901 tractor for my dad. It has over 9k hrs on it but has been deleted. I then found a used la525 to put on the tractor. Works great but after I run it for about 5 or 10 mins it starts blowing alot of blue smoke and will smoke more the harder you use it. If you shut it off for 10 mins and the fire it back up it won't smoke for a couple minutes again. I changed the oil filter in the catch can thinking it was drinking it's own oil from blow by but no it's still doing it. Do I need a new head? Is it warming up then letting oil in somewhere? I dont know where to look next. Any help would be great, I bought this so my dad could use it around his house now since he's retired. Thank you

 

[TheOldHokie]

So I bought a used l3901 tractor for my dad. It has over 9k hrs on it but has been deleted. I then found a used la525 to put on the tractor. Works great but after I run it for about 5 or 10 mins it starts blowing alot of blue smoke and will smoke more the harder you use it. If you shut it off for 10 mins and the fire it back up it won't smoke for a couple minutes again. I changed the oil filter in the catch can thinking it was drinking it's own oil from blow by but no it's still doing it. Do I need a new head? Is it warming up then letting oil in somewhere? I dont know where to look next. Any help would be great, I bought this so my dad could use it around his house now since he's retired. Thank you

What catch can?

With 9K on the clock it may just be slap worn out.

Dan

 

[whitetiger]

So I bought a used l3901 tractor for my dad. It has over 9k hrs on it but has been deleted. I then found a used la525 to put on the tractor. Works great but after I run it for about 5 or 10 mins it starts blowing alot of blue smoke and will smoke more the harder you use it. If you shut it off for 10 mins and the fire it back up it won't smoke for a couple minutes again. I changed the oil filter in the catch can thinking it was drinking it's own oil from blow by but no it's still doing it. Do I need a new head? Is it warming up then letting oil in somewhere? I dont know where to look next. Any help would be great, I bought this so my dad could use it around his house now since he's retired. Thank you

You bought a used tractor with 9000 hours that you know nothing about.
The first thing to do is have a compression test performed.
You will probably find it needs a major overhaul.

 

[Jimmie78]

So I bought a used l3901 tractor for my dad. It has over 9k hrs on it but has been deleted. I then found a used la525 to put on the tractor. Works great but after I run it for about 5 or 10 mins it starts blowing alot of blue smoke and will smoke more the harder you use it. If you shut it off for 10 mins and the fire it back up it won't smoke for a couple minutes again. I changed the oil filter in the catch can thinking it was drinking it's own oil from blow by but no it's still doing it. Do I need a new head? Is it warming up then letting oil in somewhere? I dont know where to look next. Any help would be great, I bought this so my dad could use it around his house now since he's retired. Thank you

First things first. Remove the exhaust manifolds {be sure to have adequate ear protection before startup} and start up the engine if necessary to determine which cylinders the oil is coming from. Be sure to have extra good ventilation and a quick engine shut off or you may find yourself in big trouble. It may be necessary to have something ready to block off the air intake just for safty sake. Good luck!