In a message dated 5/16/2004 2:40:20 PM Eastern Standard Time,
accf-club@xxxxxxxxxxxxxxxx writes:
If i
'm in a coast AND i turn to the left (in a hard curve) AND i need some "power"
, the engine (carb) doesn't respond, hesitate , until i release a
little the gas pedal (and refill the bowl ?. Seems that ther's no
gas in the carb during 1 or 2 seconds ..
The early WCFB carburetors have a vacuum passage to pull hot air into the
choke and operate the "choke-pull-off" piston. This passage went from the
carb cover into the main body at the right side front of the float
chamber. during the conditions you describe (Coasting into a left turn.)
the manifold vacuum is high enough to pull fuel into this passage at the cover
gasket, causing a stall or hesitation from over-richness.
The fix is to insert a small brass tube into the main body that extends up
into the cover through the existing hole in the gasket, thus sealing the
joint. Be sure that the cover screws are properly tightened.
Until you can install the fix, be sure that the cover screws are tight to
at least discourage the leak.
Another thing to keep in your mind is that we learned about this problem in
engineering after several people ran into parked cars because the power steering
quit when the engine stalled. They didn't have enough presence of
mind to know that they could still steer without it!
Joe Savard
Former Carburetor Lab Test Driver
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