930 Exhaust manifold.

I seldom use this tractor in the colder weather but recently I had the opportunity and so I put the batteries in and it started. What a nice surprise. Mind you it did not run smooth. This tractor always did run rough until it warmed up.

While waiting for the warm up to occur I noticed that the exhaust manifold had puffs of smoke and vapor coming out. On a closer inspection it looked like there is a hole at the base of the exhaust manifold for the first two pistons. Is this normal? The hole looks like it is part of the manifold (ie not a crack and not a burn hole) almost like a drilled hole. I could not see the same for any other pistons.

The vapor coming out seems to be partially burnt fuel. So you see a white puff and then the block receives moisture. Remember now that the tractor is missing or runs like only 4 or 5 cylinders are firing. Once the tractor warms up (2 or 3 min) the missing stops and the vapor and white puff disappear. I always have visions of a bad head or two bad cylinders but once the tractor warms up it seems to work ok. (I do not have anything to compare it to.)

Thanks for your comments.
PamND

Tag on the dash says 932 and front end is wide with adjustable setting. No 3 point.

PamND

PamND

Thanks for the comments.
PamND