Spark delivery problems can be both on the primary and secondary side. If
the plugs are carbon fouled spark will be weak as the plug is essentially
shorted. It is fairly common for the cables ends to either short to the
shell or open. Especially with aftermarket wires. Check spark from the coil
directly and then go out from there.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Angus Gordon
Sent: Saturday, September 19, 2015 8:12 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Cause of weak spark?

'86 syncro

I'm looking to solve a weak spark problem. Battery voltage is present at the
coil (D15 power currently coming from G2).
Coil has been swapped.
New dist. cap and coil wire (swapped).
Grounds re-cleaned below coil.

Am I correct that the coil ground is through ECU pin 19? Under the coil?
My brain is as weak as my spark right now.

Thanks for any help,

Angus