When I bought a second '51 M38 at a auction, the owner asked what I was going to do with it. I said put it back to military trim. I said too bad the waterproof carb is gone. He said "you want that?" He then left and returned with two of them.
What a screaming deal! Well, my 1st M38's YS failed me. I rebuild one of the two freebees that was full of leaf cutter bee dirt clods and put it on. It runs well. The original would not pull off idle, run out of fuel, and miss as you accelerated. I tried changing springs and checked for not enough vacuum, not enough fuel, and all looked fine. So, I then checked timing and advance, and for spark dropping out. All fine. I replaced the carb and boom, instant response and adjustment. Yesterday I disassembled the first carb and checked every last orifice and passageway for blockages or incorrect parts. I can find no differences between it and the one that runs fine. I even examined gasket holes at the mating surfaces. I checked all orfices by feeling that they were open with a fine orifice reamer. Blew air through all, Shined a light through all. Clean as a whistle. Anyone ever run into this problem? It's a mystery to me.
John ( I forgot to mention that the carburator that was on the 2nd M38 was believe it or not, a 539S WW2 carter WO ! It's now on and running fine on my MB. What a day that auction was!)
Go figure. John
John
