Looky here boys, whatcha think?This engine is a 1957 Chevy 235
Does anyone know common problems related to off idle stumble and stalling?
-New rebuilt Rochester carburetor.
-Engine starts and idles pretty smooth.
-When I snap the throttle, or open it relatively fast, it starts to stall and acts as if it is not getting enough fuel. This is consistent cold or hot.
-The fuel pump is pumping plenty of fuel.
-Checked timing, I'm timed a little advanced (using the bee-bee). It still can be seen in the window.
-When revving engine it misfires.
-Engine ran normally prior to installing professionally rebuilt carb.
-The vacuum advance seems to be working normally. Although it moves to full advance as soon as I snap the throttle before the engine has a chance to rev.
Any ideas on what the problem might be.
ALSO: with a clear, clean mind...recheck the firing order on Dizzy....carefully. If that's OK, rotate Dizzy while running, each direction, and see if it will rev. It probably wants advance to 5 deg from BB ball. (pointer on triangle with timing light?). If no result: Be sure choke it operating. Then try revving with some choke on and see if it revs. These trials may give clues.
