Quote:
Originally Posted by chap52
I agree with brake1000,. I had a similar problem and found it was 180 degrees out. If yours was running, but rough it could still be way out.
When I got my 52 it barely ran and I found that the crank gear was out of alignment by three teeth. No one could figure how it ran at all. Could be you snapped a tooth???
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An ignition 180 degrees out will not run at all. Never ever. And the only way to get that way is improper installation of the distributor. A previously running engine can't spontaneously get 180 degrees out unless you pull and set the distributor in backwards.
Is it really backfiring? To me, a backfire sounds like firing a large caliber gun, loud enough to wake the neighborhood, strong enough to explode a muffler case. Crackling on deceleration indicates a lean condition at the idle mixture.
As for the immediate problem, I'd suspect you flooded it. Try cranking with the throttle floored. Try a spray of starting fluid down the carb.