[T3] ignition wire resistance
Dave Hall
dave at hallvw.clara.co.uk
Fri Oct 14 16:30:14 PDT 2011
I think all the wires I've had in my air-cooled VWs have been stranded
copper. The '59 Beetle had them too, but the caps were unsuppressed (no
resistors there) and made a radio impossible to use. I think in '61 VW
started using red carbon-filled leads, which were notorious for misfires
when the lead core became broken.
I suppose modern leads have different cores, but what's wrong with the
original material?
Jim, is the spark plug wire you supply copper cored or 'self-suppressing'?
Dave.
UK VW Type 3&4 Club
===================
-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of crash 69
Sent: 14 October 2011 15:43
To: type3 at vwtype3.org
Subject: [T3] ignition wire resistance
Had an incident yesterday where a spark plug came loose (fairly new plug).
I put it back in and found the wire had a crack in the boot. So, I put an
old wire back on that #2 plug and I'm still having a misfire type symptom.
The old wire checks out fine, but it's much higher resistance (by design)
than my current set of wires.
Old wire: about 9000 ohms per foot
new ones (bought 5 months ago); about 400 ohms per foot
So, I've got 3 new ones and 1 old. Will this difference in resistance cause
my symptom or is it something else? Spark plug looks perfect.
Thanks in advance.
Dan
65 SB
1915cc (best guess)
dual 44idf
MT
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