You should double and triple check your timing. Make sure your timing is
correct at full advance. Use a good light that will still work at high
rpm. I use gap to diagnose weak spark problems. If the problem disappears
with a smaller gap (say .015) then you've got a weak spark. Generally
electronic ignition manufacturers recommend a big gap because the higher
voltage and short rise time of their systems permits it. You're less
likely to get a fouled plug with a big gap.
You could have a bad Pertronics unit, those these kind of things usually
fail by going inert.
Your old coil may not like your new system. Coils with a lot of broken
down insulation don't like hot ignition systems.
-----Original Message-----
From: Gerald Van Vlack [mailto:jerryvv@alltel.net]
Sent: Sunday, June 15, 2003 8:48 AM
To: FOT
Subject: Pertronix Ignition points sustitute system
FOT,
I have a TR4A with the mild level of preparation (D Cam and other
modifications pretty much per Kastner's book) . I recently installed a
Pertronix points replacement system. Before the replacement I could easily
pull 5600+ rpm. Now it breaks up at about 4800 rpm. Nothing else was
changed. Any ideas as to what the problem might be? I have noticed a
definite improvement in idle smoothness but that's all. Could the plug gap
be the problem? I see on Pertronix's web site a note about increasing the
gap by .005. I haven't tried that yet. Jerry Van Vlack
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