> Surging usually indicates a blocked idle circuit.
Thanks! I was thinking that should be my next thing if cleaning up the fuel supply doesn't solve the problem. Given the missing fuel screen at the sediment bowl and a little crud I found in the carb filter I guess it's possible that even a new carb got something in that main circuit.
As I mentioned before, the carb filter is noticeably shorter that my others, almost like it was cut down. I wonder if that could restrict fuel flow as well (I have a new one coming).
I'm still curious about the issue of the economizer jet possibly being oversized. If I do end up removing and disassembling the carb I wonder if I should check the jet sizing, but I'm not sure how to do that (or where to find a correct jet, short of buying a whole deluxe rebuild kit).
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Today's Featured Article - History of the Nuffield Tractor: Part 2 - by Anthony West. In February 1953 production of the ETC T.V.O engine started, ready for the March 1953 press announcements. The new TVO engine had a number of improvements which resulted in a 10 per cent more power (43bhp as against 38 bhp on the earlier engine) and 10 per cent more fuel economy. Some of the improvements are listed below: Redesigned combustion chamber, improved spark plugs and positioning, plug size 14mm(earlier size 18mm).
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