tom levandoski
Member
I have a 1940 international h tractor which smokes but runs good would there be any chance that the valve seals are bad hope hope hope Thank you!
- Thread starter tom levandoski
- Start date
Roger in Iowa
Well-known Member
What color is the smoke?
Butch(OH)
Well-known Member
Yes it is possible but anyone's guess at this juncture. Easy to diagnose but will cost a manifold gasket. Remove the manifold and look in tbe ports at the valve stems. If some or all are dripping wet with oil then there is at least part of your problem. Black color and SLIGHT dampness with oil are normal on the intakes. Been 45 years since I was into an H engine but don't belive there were any seals on them, guide to stem clearance being the oil control. If you remove the head to repair look at the pistons. If they are washed clean around the O.D. then you also have oil coming up past the rings.
Moonlite37
Well-known Member
IHC tractors if that era were not originally equipped with valve seals
Steve@Advance
Well-known Member
Not very likely valve guides alone would cause much smoke.
Blue smoke is oil, black smoke is rich fuel mix.
If it smokes blue on start up only, valve guides could be suspect. But if it blue smokes under load, it is rings.
If its working days are over, still has decent oil pressure and not leaking at the main seals, you can probably get by with an in frame ring and top end job.
Blue smoke is oil, black smoke is rich fuel mix.
If it smokes blue on start up only, valve guides could be suspect. But if it blue smokes under load, it is rings.
If its working days are over, still has decent oil pressure and not leaking at the main seals, you can probably get by with an in frame ring and top end job.
rustred
Well-known Member
check the compression and read the spark plugs is the first thing to do. if its smoking its overhaul time. those old tractors dont have valve seals and dont need them. pull the valve cover and wiggle the valve stems on TDC on COMPRESSION stroke and you will find the guides may be worn out.valve guides show up also when idling a bit and rev up the engine and a puff of blue smoke out exhaust pipe. it its sitting there smoking blue at idle well you have a worn out engine. maybe broken rings, like what is the tractors history? u just buy it or own it for a while? plus dont you keep track of the oil consumption? that the dead give away when to overhaul an engine.
BarnyardEngineering
Well-known Member
- Location
- Rochester, NY
If it runs well, produces good power, and isn't fouling plugs to the point of being annoying, engine oil is lots cheaper than an overhaul.
I have had good luck with using Seafoam in the intake to reduce smoking too. So far I've done it on three smoking tractors and it has drastically reduced or completely eliminated the smoking.
I have had good luck with using Seafoam in the intake to reduce smoking too. So far I've done it on three smoking tractors and it has drastically reduced or completely eliminated the smoking.
Rich'sToys
Well-known Member
- Location
- Southern MN
Barnyard, where are you adding the Seafoam? I've heard of adding it either to the gas or to the oil. Not sure what you meant by the intake.
I've got an H and a UB Minneapolis Moline. Both had set for many years before I got them running again, and both smoke a LOT! I keep hoping that they will at least partially
come out of it after running a while. I might try adding Seafoam as you suggested.
And yes, I know that tearing them down is always an option. In this case it is the last resort.
I've got an H and a UB Minneapolis Moline. Both had set for many years before I got them running again, and both smoke a LOT! I keep hoping that they will at least partially
come out of it after running a while. I might try adding Seafoam as you suggested.
And yes, I know that tearing them down is always an option. In this case it is the last resort.
tom levandoski
Member
How do you put it in and where Thank You!
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