I have questions about MF35.

[cachip12229]

I bought a 1963 MF5 in a box (four boxes and a rolling chassis). It's been like a 1K jig-saw puzzle without a picture to go by. I got it back together and tried starting it and wound up burning up the starter. It was a Delco-Remy 1107654 knock-off with a long nosecone. Bought a second after market Delco-Remy 1107226 that had the shorter nosecone (parts manual replacement for the longnose version) and worked well to crank it, but wouldn't disengage (burned it up as well). I thought it might be because the nosecone was too short to fully disengage. Any thoughts about that?

Second issue, the tractor ran for about 10 minutes before a heavy amount od white smoked started pouring out of the valve cover vent. Smelled like burnt oil. Pulled plugs and there was dry white residue on each plug electrode. Oil level was normal and there was no coolant in the oil. Oil pressure was good and showed atbou 40 psi, before and after. Now when tractor started the smoke started immediately. In fact it starts right when the engine starts. Ideas on this? Thought maybe a head gasket??? I thought it might be a valver guide, but no smoke in the exhaust.

All thoughts on both issue are appreciated.

 

[John Deere D]

I bought a 1963 MF5 in a box (four boxes and a rolling chassis). It's been like a 1K jig-saw puzzle without a picture to go by. I got it back together and tried starting it and wound up burning up the starter. It was a Delco-Remy 1107654 knock-off with a long nosecone. Bought a second after market Delco-Remy 1107226 that had the shorter nosecone (parts manual replacement for the longnose version) and worked well to crank it, but wouldn't disengage (burned it up as well). I thought it might be because the nosecone was too short to fully disengage. Any thoughts about that?

Second issue, the tractor ran for about 10 minutes before a heavy amount od white smoked started pouring out of the valve cover vent. Smelled like burnt oil. Pulled plugs and there was dry white residue on each plug electrode. Oil level was normal and there was no coolant in the oil. Oil pressure was good and showed atbou 40 psi, before and after. Now when tractor started the smoke started immediately. In fact it starts right when the engine starts. Ideas on this? Thought maybe a head gasket??? I thought it might be a valver guide, but no smoke in the exhaust.

All thoughts on both issue are appreciated.

Make model of Engine please?
Gasoline.? Diesel?

Were all Engine bearing clearances as per Service Manual specification?
Were all Bearing caps oriented properly,as in Mains and Connecting Rods?
Bob...

 

[cachip12229]

It's a Continental Z134, gas, that was a fresh rebuild by the pervious owner. The previous engine had a cracked block and it was replaced with a Z145 block. I don't have 100 percent confidence in the previous owners work. He had mechanical knowledge and abilities, but with that said he installed the wrong cam, which lead to my doubts. He had the crank machined and he showed me the plasti-guage that he used when he torqued the bearings. The block was resleeved and the pistons and rings are all new. IDK about the bearing cap orientation but they were torqued to spec's and it seemed to be put together correctly. He also rebuilt the oil pump (not replaced, but rebuilt) and it seems to work since theres oil pressure. The heavy white/blue smoke has me baffled. I've never had it pour out on the valve breather like that, not just a little but a lot.

 

[40Mule]

Broken rings after it warmed up maybe? End gap clearance critical.

 

[40Mule]

Broken rings after it warmed up maybe? End gap clearance critical.

Check compression.

 

[John Deere D]

It's a Continental Z134, gas, that was a fresh rebuild by the pervious owner. The previous engine had a cracked block and it was replaced with a Z145 block. I don't have 100 percent confidence in the previous owners work. He had mechanical knowledge and abilities, but with that said he installed the wrong cam, which lead to my doubts. He had the crank machined and he showed me the plasti-guage that he used when he torqued the bearings. The block was resleeved and the pistons and rings are all new. IDK about the bearing cap orientation but they were torqued to spec's and it seemed to be put together correctly. He also rebuilt the oil pump (not replaced, but rebuilt) and it seems to work since theres oil pressure. The heavy white/blue smoke has me baffled. I've never had it pour out on the valve breather like that, not just a little but a lot.

Restricted Exhaust manifold..??????

Incorrect Exhaust Manifold GASKET......??

The Fasteners (Studs / Cap screws ) that attach the Manifold to the Head,do any of those threaded bores allow the Studs / Cap screws to come in contact with the Engine coolant.????

Piston "RINGS" are not installed on Pistons properly,orientation as well as end Gap ?????

Yes do a compression check....

When checking the compression ,be sure the throttle (Carb) is wide open.

 

[cachip12229]

So I cranked it up this morning and it idled nice, but smoke was still present. I shut it down after 15 seconds and pulled the dipstick to check oil level. Oil level was still good but smoke began coming out of the dipstick hole. Seems the oil burning is coming from the lower portion of the crankcase. Oil pressure was still around 40 psi. Compression is #1: 80, #2: 125, #3: 120, #4: 120. That 80 concerns me. So is the smoke caused from the rings on the #1 cylinder or the main or connecter bearings? Is there anything else I can check or do before I begin disassembling the tractor? I'm leaning towards the rings due to the fact that the smoke starts immediately after starting the engine, but I'm looking for another opinion from someone with more experience than me. Any thoughts?

 

[miangus]

White smoke would indicate coolant to me, does it smell like antifreeze. Maybe burning cleaning solvent left in the engine. Check the valves, maybe one is allowing combustion gas into the valve over. Try re-torquing the head,

 

[miangus]

So I cranked it up this morning and it idled nice, but smoke was still present. I shut it down after 15 seconds and pulled the dipstick to check oil level. Oil level was still good but smoke began coming out of the dipstick hole. Seems the oil burning is coming from the lower portion of the crankcase. Oil pressure was still around 40 psi. Compression is #1: 80, #2: 125, #3: 120, #4: 120. That 80 concerns me. So is the smoke caused from the rings on the #1 cylinder or the main or connecter bearings? Is there anything else I can check or do before I begin disassembling the tractor? I'm leaning towards the rings due to the fact that the smoke starts immediately after starting the engine, but I'm looking for another opinion from someone with more experience than me. Any thoughts?

I would be concerned about the 80 #. I would still adjust the valves, are there any bubbles in the radiator?

 

[cachip12229]

I'll try that first... that's certainly easier than pulling the head, oil pan and removing the #1 cylinder to check the rings. I will say the coolant level hasn't changed and that there's no indication that there's coolant in the oil pan. Also the smoke smells like burnt oil.

 

[40Mule]

Is it possible to look thru the spark plug hole and see if bore is scoring??

 

[Ron(Ont)]

Put some oil in #1 sparkplug hole and redo compression. If it is the rings, the compression will go up. If it is a valve issue, there will be no change.