[DML] Re: Still -more- ignition nonsense....
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[DML] Re: Still -more- ignition nonsense....



Uh...I'm not sure you completely read the earlier posts. I have 
indeed replaced the ignition ECU, I was loaned a functional spare for 
testing. There was no improvement.

I do understand how breaker-less ignition works, now that I've been 
reading up on it.

Some new theories are:

1. Despite the resistance being in spec, the pulse coil is dying, 
giving the ECU a poor signal to amplify and convert. (Garbage 
in=garbage out)

2. The ECU is poorly grounded. (check grounds)
3. The shielded cable from the ECU to the dizz is faulty. (continuity 
check)
4. The white/slate control wire from the ECU to the coil is faulty. 
(continuity check)
5. The mostly-new rotor is faulty (It has a 5k ohm resistor in it, 
resistance check)

I rule out the main coil-dizz wire because I've tried two and there 
was no change in performance. No matter if my timing advance was 
faulty, or if I was starving for fuel, the spark should be strong. It 
doesn't matter if the plugs fire at the wrong time, or on an empty 
cylinder. The timing light should still strobe under those conditions.


--- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> 
wrote:
> The ONLY thing you haven't replaced is the ignition ECU...
> 
> Do you understand how coils build up HT electricity? Normally 
grounded
> breakerless module (or points) momentarily breaks that ground, 
<snip>




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