The Stovebolt Site Forums The Shop Area Engine Shop Timed with Vac, now won't start

Have you turned it in and out to see if it smooths out the idle and raises vacuum? 2.5 turns out is quite a bit. But every engine is different.

Depending how you unhooked the vac advance and how high your idle is set, that could create a vacuum leak. I don’t see any reason not to hook back up.

You should have enough timing now for it to run fairly smooth. If you’ve checked points gap, firing order, adjusted idle mix, etc….I’d maybe start hunting for vacuum leaks. An unlit propane torch, or carb cleaner applied to manifold connections…carb base, etc. If you hear the idle change…you’ve found your leak.

(I also don’t recall if we’ve addressed valve adjustment, but my impression is that this thing ran ok in the past)