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RE: [T3] Dead Injectors Puzzler

On 10 Jan 2001, at 9:14, Fuhriman, Mark wrote:

> I couldn't work on it last night (refrigerator problem took precedence), but
> maybe this evening I'll know more.  If the wiring is swapped, I agree that
> the problem must be either in the trigger points or in the trigger points
> wiring harness.  A problem with the points themselves seems unlikely to
> me... you should see how clean they are, and I get good open/close
> continuity on the trigger points connector pins at the dist. base when I
> turn the engine over and measure with the VOM.

The problem I have seen is with the "dwell" on the points. The bad 
set that I had looked fine in every way except for when I ran the 
engine with the Bosch FI tester hooked up. With this in place, I 
could read a voltage that was proportional to dwell and I could see 
that one of my points had a different dwell from the other. I tried a 
number of things before I actually gave up on these points, but 
nothing helped until I replaced them.

I'm not sure, but I suppose that you might be able to measure a 
similar voltage with a VOM set on a voltage scale. Connect the 
VOM from center to each side in turn while the engine is running. 
Of course the plug has to be connected, so you will have to slide 
the boot back and stick your probes in the backside of the dist wire 

While others have reported bad points whose connections gave 
resistances of more than 50 Ohms when closed, mine were as 
close to zero as my meter would measure (less than 1 Ohm.)

Jim Adney
Madison, WI 53711-3054

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