Re: Perfecting a '71 Sunroof (was RE: [T3] '70 square tuning)

[Jim Adney <jadney@vwtype3.org>]

On 26 May 2007 at 20:25, Adriel Huntington Rowley wrote:

> From: Jim Adney [mailto:jadney@vwtype3.org] 

> >I'd be thinking about spark. If the SP wires are new, then it's 
> >unlikely that there's something wrong there, but I'd check the 
> >resistance thru each one anyway. The 4 to the 4 plugs should measure 
> >~1 kOhm. The coil wire should measure ~0 Ohms. The rotor should 
> >measure ~ 5 kOhms. Anything close is good enough. Check the wires to 
> >make sure they're not rubbed thru anywhere. 
> 
> I just put on new wires that all checked out.  The rotors (checked to see if
> there were any good ones) stayed at 1, so I guess I have to replace that.
> The meter was set properly; I checked it on other things.

What does "1" mean in this case? If this was a very low resistance, 
then you've just got a cheap rotor that doesn't have a resistor in 
it, but it will work fine; t will just generate a little more radio 
noise. If "1" means something very large, much more than 5000 Ohms, 
then it is a original style rotor that has a failed resistor in it. 
That could very well be your problem. Buy a correct Bosch one.

(I'm assuming that your probes were making good contact with the 
rotor contacts.)

-- 
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Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
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