Sudden smoke

reb-in-pa · Apr 8, 2010

While pulling the grandkids in a two-wheel cart, my Super A lugged for a few seconds as if under a sudden heavy load, then started smoking out the exhaust. It kept running smoothly, but by the time I got back to the barn, she'd filled the whole hollow with oil smoke. She pushed enough oil out that I could wipe it off the exhaust rain cap with my (gloved) finger.

I'm thinking busted ring. Anybody have any better (or easier to fix) ideas?

gene bender · Apr 8, 2010

Have you checked the oil level as your fluid from the hy pump could be leaking into the engine from the seal in the pump going bad and now you are way over filled. Take out the plugs lay them in a row on the hood and look for which one is oil soaked this will tell you which cycl could be bad.

rustyfarmall · Apr 8, 2010

(quoted from post at 04:27:54 04/08/10) While pulling the grandkids in a two-wheel cart, my Super A lugged for a few seconds as if under a sudden heavy load, then started smoking out the exhaust. It kept running smoothly, but by the time I got back to the barn, she'd filled the whole hollow with oil smoke. She pushed enough oil out that I could wipe it off the exhaust rain cap with my (gloved) finger.

I'm thinking busted ring. Anybody have any better (or easier to fix) ideas?

A broken piston ring would be my first guess. Especially if the engine lugged down for a bit and then began smoking.

reb-in-pa · Apr 8, 2010

Gene --

A neighbor suggested that the hydraulic system could be leaking into the crankcase, so I opened both petcocks to check levels. I got nothing out of the upper and only a dribble out of the lower. My understanding is that there is a quart difference between the two, and my guess is that being overfilled by less than a quart wouldn't create this problem. Do you agree with those two assertions?

I'm at work now, but I'll try to check plugs tonight and report back tomorrow.

By the way, the grandkids thought the smoke added an exciting new dimension to the ride. Grandma wasn't as enthusiastic.

Thanks.

Andrew Z · Apr 8, 2010

do a compression test and see what you get should be at least 90lbs, 120 would be great

Andrew

El Toro · Apr 8, 2010

If you can locate a borescope light you can take a look inside each cylinder to see if a sleeve has a deep groove in it.. Probably time to rebuild the engine. Hal

Andy Martin · Apr 8, 2010

You're not overfilled until you get oil out of the top petcock so excess oil is not the problem.

rustred · Apr 8, 2010

a broken ring will not throw the oil out the exhaust as you say. i have seen engines with broken rings, and what happens it wears a groove in the cyl.this is more like a piston with a hole in it.place to start is comp. check and plug inspection as suggested.a follow up on what you find would be nice to know.

Janicholson · Apr 8, 2010

A wild idea might include oil from the air cleaner (possible water raising the level of oil to the point it sucked into the engine. That would make it run stryggling as the mixture was off, and account for the continuing to run OK as well as the heavy smoke. I would look at the connection tube to the carb, and the air cleaner resevoir. Best of luck Jim

gene bender · Apr 8, 2010

that sounds good if the iol level isnt high, Pulling plugs will tell you something just keep them in order so you know which if any cycl could be causing the problem. If you find one oil soaked check your pushrods in that cycl as mite be a sticking valve or the valve isnt working rite.

Sudden smoke

reb-in-pa

Member

gene bender

Well-known Member

rustyfarmall

Well-known Member

reb-in-pa

Member

Andrew Z

Well-known Member

El Toro

Well-known Member

Andy Martin

Well-known Member

rustred

Well-known Member

Janicholson

Well-known Member

gene bender

Well-known Member

Similar threads