As the saying goes, 90% of all carb problems are ignition related and
vice versa
Lester
On May 7, 2008, at 10:43 PM, Marlene Rzepkowski wrote:
> Sounds like spark plug wires to 1 and 2 are reversed and fiddling
> with the
> carbs is just leaning out the firing cylinders to confuse the issue.
> Remember the firing order is 1,3,4,2 and the Dizzy goes counter
> clockwise.
> So maybe 1 and 2 are firing but not at the right times? Easy enough
> to
> check anyway.
> Dick Rz.
>
>
>> All right all you mystery lovers. My "new" engine starts perfectly
>> and
>> runs easily - on two cylinders, 3 and 4. Cylinders 1 and 2 are
>> flooded
>> out and will not fire. At one point, cylinder 2 was firing enough
>> to make
>> the plug sooty. Cylinder 1 was always wet with gas. Pretty much
>> everything is either new or cleaned and checked. Electronic
>> ignition, new
>> wires, rotor, cap, coil plugs. Spark to all cylinders confirmed by
>> inline
>> checker. Compression mid 170's on 1, 2, and 4, mid 160's on 3
>> (which is
>> firing). The same problem occurred with two different sets of carbs.
>>
>> Here's the fun part. When the carbs were set at 12 flats down,
>> plugging
>> the front carb caused a large increase in speed. Plugging the back
>> carb
>> caused instant death. I leaned the front carb pretty much all the
>> way to
>> the top because cylinders 1 and 2 were flooding. In that
>> condition, I
>> covered the intake with my hand and absolutely nothing happened, as
>> though
>> there were no airflow through the front carb at all. The vacuum
>> felt very
>> weak compared to the rear carb. There does not appear to be anything
>> wrong with the butterfly. No evidence of leaking by an ether test
>> at the
>> gaskets, etc. Later, I even stuck my finger in the manifold to see
>> if
>> there were a mouse nest or something.
> .
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