Jim and others are correct. The correct "lacing" of the plug wires is
mission critical. If I recall, this is mentioned in the original Tiger Shop
Manual.
I had a similar experience when I removed the F-4B to correct for an oil
leak on #4. I did not pay close enough attention to lacing the plug wires
correctly and got a miss on #4. Even though I used some of the best plug
wires possible, there was still a problem.
Finally narrowed it down when someone on the list suggested running the car
at night in a dark garage (door open of course.) Funny, but the plug wires
arcing was occasionally visible!
Chances are, if you correctly lace the wires you will probably rid yourself
of the problem.
Regards,
Allan
B9472373
-----Original Message-----
From: owner-tigers@autox.team.net [mailto:owner-tigers@autox.team.net]On
Behalf Of TIGEROOTES@aol.com
Sent: Saturday, November 10, 2001 9:39 PM
To: tigers@autox.team.net
Subject: Re: Dead #4 cylinder
Andy,
My guess is you have an ignition crossfire, either within the cap or
more
likely between plug wires. Under load, the combustion pressures increase
considerably and the spark has a harder time jumping the plug gap: it looks
for anywhere else to go, and sometimes the easiest pathway to ground is
another wire! Ford has printed service bulletins on the topic and they show
the correct way to "lace" the wires off of the distributor cap in the shop
manuals. A set of Packard 440 wires would be nice, too. (gee...I doubt
many
remember them!)
Jim Leach Pacific Tiger Club Seattle
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