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>From: "Gregory M. Merritt" <gregm@engin.umich.edu>
>On Sat, 4 Jan 1997, Jonathan Hirschman (Pathfinder) wrote:
>> However, it still has the same problem from before - it misfires in 3rd
>> and 4th gear at certain revs (not always)...at about 60 kph in 3rd, and
>> around 80 in 4th. It happens more under heavier loads.
>>
>> I'm guessing the problem is the vacuum advance. I tested the advance by
>
> The finer points of ignition & induction are not my strengths,
>but... under heavy loads, if you've got the pedal floored, there isn't
>much of a vacuum in the intake manifold; it's very nearly at atmospheric
>pressure since the throttle is fully open. (Right?) It would then
>follow that the vac. advance--whether functional or not--wouldn't be
>playing much of a role in that situation.
Right, Greg,
But he may not be in much throttle. If the vac can is leaking it will pay
to replace it anyway, even if this problem is really related more to the wires.
[see other message]
Jim
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Melissa Kepner Jim Adney
jadney@vwtype3.org jadney@vwtype3.org
Laura Kepner-Adney
Madison, Wisconsin
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