Ignition/spark question

[sharpshooter33 at roadrunner.com (David Brown)]

Ok I'll play.... 8-)
How bout the cap isn't fully seated. Had that happen once.
or
MS fixed angle and your distributor are such that the signal is coming at 
where the spark is being fired right at the edge of the cap/plug wire pickup 
so that with any advance or retard(depending on what edge) the spark is 
"missing" the plug wire pickup (this one is just a funky guess, but it 
sounds good) 8-)

Good luck. I wanna see that MS running at Cincy
David

Keep us posted. Maybe this can help me avoid it when I install my 
MS(hopefully soon after Cincy)
----- Original Message ----- 
From: "C Boyko" <roccit_53@xxxxxxxxxxxxxxxxxxxxxxx>
To: <scirocco-l@xxxxxxxxxxxx>
Sent: Wednesday, May 09, 2007 11:14 PM
Subject: Ignition/spark question


> Okay, I'm just fishing in case someone strikes on something that works. 
> I'm
> trying to figure out why my MkI has gone from starting and idling to
> running on one cylinder (number three in particular). Spark seems to be 
> the
> issue. I drove the car on CIS with Megasquirt controlling spark and it did
> a marvellous job (so the map is good, and it functions), and this revised
> frankenbuild started and idled well on both fuel and spark, until I got a
> throttle cable and was in a position to actually drive it. It has not run
> on all four since. I've done some basic diagnostics, Dan has been very
> helpful on the MS end of it, but it appears that only one plug is firing
> with any regularity, based on clipping the timing light over the various
> wires. Many of the components are either new or have been swapped for
> different ones with no improvements. What I guess I want to find out is
> what the causes of a no spark could be. Plugs wouldn't go bad all at once
> with the car sitting (they are new), nor would plug wires, or the cap or
> the rotor, but tell me you oddball tales of queer spark behavior.
> New components include: plugs, wires, cap, rotor, and obviously MS and the
> wires to Hall, power, ground, and coil associated with it.
> Swapped components include: coil (tried two), and ignition distributor
> (broke one and replaced it). The fact that I do get spark indicates that
> basic function of Hall and coil are okay, but what if the coil is weak? I
> just reinstalled the firmware, so corruption there isn't the likely cause.
>
> Anyway, fire it at me, I thrive on the confusion. Thanks.
> cathy
>
>
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