[Vwdiesel] More glow pulg testing Q's ...

[James Hansen]

Yes.  With a infrared thermometer- the point and shoot kind.
With a cold engine, cycle the plugs a few times.  Shoot them with the
infrared thermometer. The warmer ones are working.
That's the only SURE way I know that doesn't involve clamp on current
meters.  If you had a small enough probe on a clamp on current meter,
measure between each plug with the plugs lit.  The one that has no change
across a plug would be the dead one.
Other than that, measure voltage drop across each plug.  Need a fairly good
volt meter to do that, and a clean busbar to get perfect contact for the
probes.

That said... why?
If there's a plug shot, you know it for sure when you start it.  You have to
remove the busbar to get one plug out anyway... well not really but it's
very very much easier in a relative sort of way, the bar doesn't bend out of
the way very well at all to let the plug past.
Pull the busbar, use a testlight, clamp to + terminal of the battery, touch
probe to ends of the plug to test.  If it lights, it's a good plug.  If not,
it's shot.
If you replace one, the rest aren't too far behind.
Use antiseize.

-James

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]On
Behalf Of Derek
Sent: Tuesday, December 28, 2004 5:03 PM
To: vwdiesel at vwfans.com
Subject: [Vwdiesel] More glow pulg testing Q's ...


Is there any way to identify a dead plug without removing the bussbar ?  I
suspect I have a dead plug ( at least one, it does fire, but only after
about 20 seconds on the starter .. )  I think I have an ammeter from a gauge
cluster.  I was thinking of removing the fuse near the overflow ( the flat
one ) and hooking up the meter there.  With that, I'd know how many, but not
which one(s) are dead.  Maybe its time for individual wires to each GP.
Sure would make testing easier ....
_______________________________________________
Vwdiesel mailing list
Vwdiesel at vwfans.com
http://www.audifans.com/mailman/listinfo/vwdiesel
---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.807 / Virus Database: 549 - Release Date: 12/7/2004

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.807 / Virus Database: 549 - Release Date: 12/7/2004