Smoking farmall a

[kw_20]

Hello! So I have purchased a Farmall A yesterday (I believe its a 45) and it smokes like a broken stove, but only after it has ran for a minute or two. Is that just the rings going bad or the valves? I would like to fix it this fall but I don't know what's causing it to smoke.

 

[Midniteoyl]

Which engine? What color is the smoke?

 

[kw_20]

It is the C113 and its blue smoke.

 

[Midniteoyl]

It is the C113 and its blue smoke.

I would try valve stem seals first. Lots easier than rings

 

[Roadworthy]

I'd start with wet and dry compression test. That will help identify whether it's rings or valves. Unfortunately if it's valves and you fix them the added pressure may have you doing the rings very soon, too. Of course it could just be blowing by the valve guides if you're lucky.

 

[denchen]

If you run it with the oil filler cap off, and a `lot` of gasses come out, it'll give you an idea of how much is going past the rings.

 

[RickB]

It's a cheap and easy engine to overhaul. Do the wet/dry compression test and monitor oil pressure hot and cold to verify the deficiencies. Do as much or as little engine work as you decide fits your needs and budget. An in-frame overhaul is an option if you have good oil pressure, no leaking crankshaft seals and good crank journals.

 

[DJ54]

The spark plugs will tell you a lot too. If they have an oily residue on them, not carbon buildup, more than likely. it's the rings. My BN's rings were so bad, plugs would foul out after about 45 minues of run time. An over bore sleeve/piston set, crank turned .010 with new bearings, and valve job made it like new again. That was 40+ years ago, and still runs great.

 

[Egon]

Just do an overhaul up front.

 

[kw_20]

The spark plugs will tell you a lot too. If they have an oily residue on them, not carbon buildup, more than likely. it's the rings. My BN's rings were so bad, plugs would foul out after about 45 minues of run time. An over bore sleeve/piston set, crank turned .010 with new bearings, and valve job made it like new again. That was 40+ years ago, and still runs great.

What if the spark plugs has a lot of both?

 

[m1garand762]

Parts for farmalls are reasonable. do the rings yourself and send the head out to get ground and have hardened seats installed the head might cost 300 at most and rings are around 50 put it back together and you’ll get 70 more years from it

 

[DJ54]

What if the spark plugs has a lot of both?

Dry with carbon build up, and black smoke ususlly indicates running to rich on fuel. If your plugs show carbon, plus oily residue, you're getting oil past the rings, or valve guides.

The standard plug was a Champion D15Y or equivelent. It was common to step up to a hotter plug to get by for a while, to a D21Y until the engine could be overhauled, or re-ringed at the very least. If left go long enough, and you tear the engine down, when pulling the pistons, you'll probably notice a similar buildup in, and around the oil rings, which only allows more oil to pass by them.

 

[kw_20]

Dry with carbon build up, and black smoke ususlly indicates running to rich on fuel. If your plugs show carbon, plus oily residue, you're getting oil past the rings, or valve guides.

The standard plug was a Champion D15Y or equivelent. It was common to step up to a hotter plug to get by for a while, to a D21Y until the engine could be overhauled, or re-ringed at the very least. If left go long enough, and you tear the engine down, when pulling the pistons, you'll probably notice a similar buildup in, and around the oil rings, which only allows more oil to pass by them.

Its smoking a lot less now, I'm not sure why. But anyways the plugs I use are Autolite 386's (its the plugs it had in them when i got it so i just bought the same ones) And the old ones had oil and carbon. If its the rings i hope to change them rather soon, thanks.

 

[K5lwq]

A good upgrade would be to get rid of Autolite and get a good NKG plug. Never been a fan of Autolite.

 

[Sawyer Rob]

It probably set a while, and running it a lot will reseat the rings...

At least, THAT would be my first try...

SR

 

[RickB]

Autolite 386's are a good plug for that engine.

 

[DJ54]

The Motorcraft B82 is another great plug, if you can find them.