[SnakeDoc]

I've got a '72 911T with Webers.

Had really gunked up carbs, that's been fixed by a local good shop.

It continues to backfire on rapid deceleration, after coming off a heavy acceleration period. These backfires are like gunshots, not the pleasant burble of engine breaking, at all.

I'm a newbie. Is this normal? I think not. If not, though, what aside from dirty carbs could explain? It's supposed to have been tuned up before I got it, and is accerating noticably better since the carb rebuild.

Timing is on my mind, and I need to buy a strobe light. Feeler guages for the points, I do have.

Thanks for any help.

Tom in Memphis