The likely hood is a manifold leak. Either at the head, at the carb, or internally between the Exhaust and intake where they touch.
While it runs, take a propane torch (with the tip taken off so only propane comes out) and with it turned on just a little, move it all around the intake system. (do this outside, and have good sparkplug wires) If there is a leak, the engine will pick up speed and run correctly! If none, (and you are sure the carb is correct!!!) then pulling the manifold to check for an internal crack is needed. Jim
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Today's Featured Article - On the Road with Dave Gohl: Auction Musings - by Dave Gohl. I was thinking the other day about all the auctions I've been to in the last few years. There've been many. Some have been very good, some have been well, disappointing to say the least. But no matter how good or bad auctions may be, we always seem to stay until the item we've come for or are interested in is on the block. I've been to some auctions near and far. I think the furthest has been the Two Cylinder 7 in the Amana Colonies last year. Lots of stuff, lots of people. I've also atten
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