Off a bit when installing timing gear in block?
Ira Erbs
DIGS-4 Solutions
Portland, OR
sent from my Droid, please excuse typos and random self corrections because
my phone has It's own ideas about what word I meant to write
On Mar 13, 2011 7:23 AM, <warthodson at aol.com> wrote:
> We have been trying to find the source of backfiring & eliminate it on a
> friend's BN7 (twin carb). Every time he shifts it back fires one time,
very
> loud. It sounds like a rifle shot. I am not talking about the normal
rumbling
> during deceleration. The car has recently been fully restored. The engine,
> distributor & carbs were professionally rebuilt. We have double checked
the
> timing & carb adjustments. We cannot find any exhaust system leaks. If
there
> are any they are very small. The tail pipes exit in front of the left rear
> wheel. The muffler has some damage, it was partially crushed when trying
to
> unload the car from a trailer when it got hung up on the trailer bed to
ramp
> angle. However, I could not see, feel or hear any exhaust leak in the
muffler
> or pipes. I have read previous posts on this subject & they always seem to
say
> that the cause is running lean or rich or exhaust leaks. I don't think we
have
> any of these issues. Can you suggest any tests we could do to isolate the
> cause of the backfiring? Has anyone experienced this type of backfiring &
> eliminated it? How?
> Gary Hodson
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