Re: backfiring/sputtering carbs

["datsunmike" <datsunmike@nyc.rr.com>]

Most of these carbs are mismatched already and I have yet to see that much 
of a difference between different piston/dome combinations that would cause 
sputtering or backfiring and I've inspected and played with a lot of carbs 
over the years.

If the domes aren't installed correctly they may bind the pistons and the 
piston never rises. Before tightening the dome I always make sure the piston 
moves smoothly.

I still believe it's a vacuum leak given the description in the post.

Mike