In the last couple of weeks I sent a couple of questions about a dead
Pertronix and loosing power above 3500 rpm.
Just thought I would report back. The Pertronix was fried evidently I
flipped the wires around that go to the coil and burnt it out . A new
unit fired it right up.
The loss of power was a bit more elusive. (The car has twin HS4) I was
convinced that the carbs were adjusted right. The engine picked up very
slightly in rpms when I lifted the pistons. The rpm increase seemed to
be about equal when lifting each of the pistons. So I had tried
looking else where. Finally , I got the ColorTune out and installed it
in the car (once on #4 and once on #1) and adjusted the carbs until the
flame was yellow and then back to blue ( I left just a little yellow in
the flame).
I started to take the Spit out for a test drive and noticed the front
carb was leaking from the fuel bowl where the jet goes in. I tried
tightening it and it just leaked worse. I discovered that the seal was
split. (Is this a common problem or am I doing something wrong? I have
had this happen to both carbs in about the 1 1/2 that the SU's have been
on the car).
Anyway, I finally got the car out for a test drive after replacing that
seal. The car ran great. So the loss of power was that the mixture was
too lean.
Roger Elliott
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