Chas-
Had a very similar problem with the Chevy a few months back. Turned out to
be a severely clogged fuel filter. Only 3 months old, too. The problem
was that after climbing a hill, the carb would starve and cause backfiring
and power loss. To check this, try shutting off the ignition and pulling
off the road when the problem appears, then look into the float bowls. If
they're near empty, you have a fuel flow problem. Other than filters, it
could be a pinched metal line, a kinked rubber line, pump problems, or
(heaven forbid!) a clogged inlet filter in the tank.
Anyone have a fuel flow spec at the carb end that Chas can check against?
I suppose I could be convinced to time a quart of fuel passing through the
system...
Good hunting!! sf
At 08:49 AM 3/18/98 -0800, chasdoug@gte.net wrote:
[...]
>I have a problem going up long steep hills. A 1 mile, 9% grade, will
>cause the engine to start misfiring about halfway up. As I increase
>throttle and lose speed, it will then start backfiring. When I limp
>over the top of the hill, the engine gradually recovers, and then runs
>fine again. Do those symptoms suggest anything to anyone? My guess is
>that it is something in the fuel/air setup, but I need some help pinning
>down what to check or where to look. Could it be running too rich and
>flooding? That's my first guess only because I really have no clue
>whether I got the mixture set right after rebuilding the carbs, and
>because my gas mileage doesn't seem to be that good (although it's been
>hard to measure given my other problems, see "bearings and brakes"
>above).
[...]
Stan Fickes '65 Austin Healey Sprite
Software Engineer '57 Chevrolet Bel Air
I-Cube, Inc. '51 MGTD, '25 MG 14/28
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