Subject: coil data resistor failure
From: Paul
Date: 4/23/2001, 11:52 AM


Perry,
Check the manual for your LCR meter. I recall mine saying to use the
resistance range only to measure purely resistive elements otherwise the
meter tries to measure reactance and reports erroneous results. Two different
DVMs read .4 ohms on the leading coil primary (MAZDA manual says .2 - 1 ohm
is OK ) and 15k ohms on the secondary ( L1 to L2 ). the LCR meter gives 2.46
ohms on the primary which is the same error you got. It gives 3.8 mH primary
and 77.3 H secondary.

I can't get any readings between the secondary and primary or core
laminations on either leading or trailing coils. Is there a spark gap on the
other side of the primary in side the coils?  On the leading coil it seems to
me that one side of the secondary is connected to L1 and the other to L2 and
the circuit is completed from coil L1 to spark plug L1 to engine block to
spark plug L2 to coil L2. On the trailing coil secondary I cant find how the
circuit is completed?
Ed.      pebvjs@aol.com

 
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