[Vwdiesel] Glow Plug testing ---- ( the FAST FAST way. ).Explain moreplease

Derek weasel1 at sympatico.ca
Wed Dec 29 15:42:51 EST 2004

Well I went out and tried the voltage drop method.  No dice.  I can't seem
to get a reading anywhere.  Must be because of where I was probing ( on the
nuts and there was corrosion )    I did try and clean it off a bit.  It is
nice to see that I am not the only one confused about this !  BTW, I do know
that a few of them are working.  I have a voltmeter installed and you can
see the voltage drop at the battery.  Picked up my Bosh GP's today.  They'll
be going in on the weekend.  I "hotwired" the GP's and I found that the #2
GP was cooler than the others, but it was really hard to detect the warmth
from them.  I'll find out if I was right soon enough ....

----- Original Message -----
From: "Mark Shepherd" <mark at shepher.fsnet.co.uk>
To: <vwdiesel at vwfans.com>
Sent: Wednesday, December 29, 2004 3:36 PM
Subject: [Vwdiesel] Glow Plug testing ---- ( the FAST FAST way. ).Explain

> The voltage drop method needs some research as it dosent
> behave quite like Roger states...
> Imagine feeding glowplugs as per normal fed along a bus bar
> from #4 through #3, #2, and finally #1.
> Measuring from #2 to #1 gives a voltage drop say XmV looking
> from between#3 and #2 would give a voltage drop of XmV as
> well even if we snapped off #2 as the bus bar has a
> nominally equal voltage drop along its length (ie) so many
> ohms per metre.
> So does the voltage drop increase from its 2  lots of 'X'mV
> which would show up with a measurement between #3 and #1
> with #2 open circuit or what?????
> The Miser
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> Vwdiesel at vwfans.com
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