Wow,thanks for the response guys!!. Ok heres what I did I bought this 1966 sears suburban it has the tecumseh HH120. The seller said it ran but was blowing oil out the carb... So I bought it had it shipped to joplin,when I got the tractor I didnt even try to start it . Ijust tore it down to restore it,I took engine off the tractor then disassembled it.when I got it appart I saw the ..10 stamped it the top of the piston.So I knew that it was board out .Pulled piston out and saw crosshatches from what I thought was the machine bore work.They were visable but kind of worn.Thats why I ran the hone through just to deglaze the cylinder.The rings I bought are NOS .10 over sized to match the .10 over piston. The rings are NOS Tecumseh rings .I have another suburban tractor with the hh100 that I rebuilt only I just honed it .I put new standard size rings in it and it ran great for 8 yrs before it started smoking a little.Anyway back to the HH120,there was no oil in the carb as the seller stated . I could tell just by looking at it that it was probably a cracked compression ring.But the rings were ok, no cracks . I cleaned up the piston with 3M scotch Brite.I might also state that I took all the engine parts and the block to work and cleaned them in our parts washer.I work at peterbilt of Joplin ,so I have accsess to some equipment to clean engine parts LOL .I totaly understand what can cause blow by,I just couldnt understand why all the oil on the front of the tractor..I knew I put everything together correctly.I ran the tractor for an hour yesterday after I turned breather cover around as I stated in past thread.All is good no oil on tractor or side of engine block.Put my finger on the breather tube just feel a sight little puff of air , no smoke or oil vapor.
too much oil vapor coming from breather
- Thread starter d10dano
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