I have a 4 cylinder Wisconsin engine on a hay baler and it has been setting up for a couple of years and I have got it running but it just doesn't sound right,like it is in a bind and soon as it cranks it has bad blowby and I checked the compression and it is in the 90's and it is not smoking out the exhaust but it is at the filler cap where it breaths at.Could somebody give me some advice? Thanks
- Thread starter Willy P
- Start date
Hope it is stuck rings as the others suspect.
I had a V4 Wisconsin on a SP swather that we got running after years of non use.
Ran great for about 5 minutes. when a big glob of hard carbon broke loose in 1 cylinder. It got down to the tight side of the chamber and made room for itself the next time the piston came up.
It tightned up almost to the point of stalling the engine than picked back up with heavy white smoke from the breather.
Removed the head and found a quarter size lump of smashed hard carbon stuck to the piston top.
The tight squeeze smashed the top ring land and broke the top ring. cocked the piston over hard enough to score / bend the piston skirt.
The engine was otherwise low hours, so we put a piston / rings in that cylinder and still use the engine 20 years later.
I had a V4 Wisconsin on a SP swather that we got running after years of non use.
Ran great for about 5 minutes. when a big glob of hard carbon broke loose in 1 cylinder. It got down to the tight side of the chamber and made room for itself the next time the piston came up.
It tightned up almost to the point of stalling the engine than picked back up with heavy white smoke from the breather.
Removed the head and found a quarter size lump of smashed hard carbon stuck to the piston top.
The tight squeeze smashed the top ring land and broke the top ring. cocked the piston over hard enough to score / bend the piston skirt.
The engine was otherwise low hours, so we put a piston / rings in that cylinder and still use the engine 20 years later.
old
Well-known Member
- Location
- Camdenton Missouri
Sticking rings and or bad valve guides. I would fill the cylinders with ATF and if it has an exhaust that goes up pour some ATF down the exhaust. Be sure to put the plugs back in and then before you try to spin it over pull them back out. Let it sit a few days. If after say 3 days you come back and find the oil over full and the cylinders empty that is good. Be sure to let the oil drain out so as not to run it over full and do not run it for say more then an hour with all that ?ATF down there. I'll almost bet after doing that the compression come up
Anonymous-0
Well-known Member
Wisconsin's are known for carbon build up. Dave
Anonymous-0
Well-known Member
Rings.
Valve guides--usually intake guides--leak oil into the combustion chamber, where it's burned, and then exits via the exhaust. Intake guide leaks usually are more noticeable under high vacuum conditions. Exhaust valve guides leaking oil are seldom major smoking problem, but they may coat the exhaust manifold with oil if they're severe enough.
When you have oil smoke in the breather, think about how it got there in the crankcase...it could ONLY be the rings, providing nothing's cracked.
Get a leakdown tester, and perform a leakdown test. While oil smoke on startup ONLY [or on deceleration/high vacuum conditions] is usually a sign of valve guides, constant smoking out the breather can ONLY be caused by bad rings. You may unstick 'em with ATF, or you may have to bite the bullet and tear it down.
Valve guides--usually intake guides--leak oil into the combustion chamber, where it's burned, and then exits via the exhaust. Intake guide leaks usually are more noticeable under high vacuum conditions. Exhaust valve guides leaking oil are seldom major smoking problem, but they may coat the exhaust manifold with oil if they're severe enough.
When you have oil smoke in the breather, think about how it got there in the crankcase...it could ONLY be the rings, providing nothing's cracked.
Get a leakdown tester, and perform a leakdown test. While oil smoke on startup ONLY [or on deceleration/high vacuum conditions] is usually a sign of valve guides, constant smoking out the breather can ONLY be caused by bad rings. You may unstick 'em with ATF, or you may have to bite the bullet and tear it down.
I bought a 4 cyl, VE4, from an Amish farmer who
said it just never did run good. The fiber mesh
top part of the oil bath air cleaner was packed
full of oat chaff. I took it off and replaced the
oil bath with a paper filter and it runs perfect.
It just wasn"t getting enough air. If the Amish
fella had run it with the intake filter off he
would have figured it out !
said it just never did run good. The fiber mesh
top part of the oil bath air cleaner was packed
full of oat chaff. I took it off and replaced the
oil bath with a paper filter and it runs perfect.
It just wasn"t getting enough air. If the Amish
fella had run it with the intake filter off he
would have figured it out !
Walterdavies
Member
That is a real easy engine to tear down and go though parts are available and just about anyone can work on them. I would just go clear though it and then it will be good for another 20 or so years.
Walt
Walt
Sounds like a very good candidate for a Seafoam treatment, in the oil and through the intake. Gag it with Seafoam by the directions, then drop the oil and replace with fresh detergent oil with a can of Seafoam to loosen up the rings, change the filter quick as soon as the oil has some color, change the oil soon afterward. The Seafoam up top will soften up the carbon deposits and let them burn out, and help prevent the problems with chunks of hard carbon. I've had hard chunks cause a loud knocking condition after simply changing spark plugs that had been in to long, by dislodging the carbon around the plugs. Give the engine a chance before resorting to major surgery- it might surprise you
buickanddeere
Well-known Member
Stuck valve and/or weak valve spring.
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