No Spark!

Peato40

Well-Known Forum User
Hi All,

I've modified my L26 by fitting a 280z distributor and wired it as suggested in the picture below, but I'm not getting a spark at the plug, so my questions are:

1.) Is it wired incorrectly?
2.) which wire needs to be installed to give the tacho it's signal?

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Rob Gaskin

Treasurer
Staff member
Site Administrator
Your diagram looks correct.

The tacho works via the 'loop' that you show (with connector).
 

Peato40

Well-Known Forum User
Your diagram looks correct.

The tacho works via the 'loop' that you show (with connector).

Hi Rob, but I don't understand how ..... connecting those two wires is simply a case of removing the resistor because there isn't points now.

I guess the module may be faulty then ..... have you any tricks up your sleeve for testing?
 

Rob Gaskin

Treasurer
Staff member
Site Administrator
The resistor is in the circuit that feeds the coil through the tacho. , so when the resistor is removed you have to complete the circuit again.

If you connect the wrong b/w wire to the coil the tacho will not get a signal.

The resistor was a device used to improve starting (short circuited during starting) and is not directly a points requirement - I still had one on a 240 with electronic ignition.

Is your coil a known quantity and is it a 12v coil?
 

Peato40

Well-Known Forum User
I'm pretty sure that I connected the black and white wire from the ignition switch with the green and white ..... but I will double check.
The coil is new but I wouldn't say it's a quality brand. I've measured it and found it to be 3 ohm .... primary and secondary coils are healthy, so should produce some kind of a spark, shouldn't it?
 

jonbills

Membership Secretary
Site Administrator
Are you sure you’ve got C&B the right way around on dizzy? My aftermarket one isn’t marked.
Also on my loom, I don’t think they’re both b/w, one of them looks black/yellow.
 

Peato40

Well-Known Forum User
Are you sure you’ve got C&B the right way around on dizzy? My aftermarket one isn’t marked.
Also on my loom, I don’t think they’re both b/w, one of them looks black/yellow.
Hi Jon< yes I double checked and have wires to C&B the right way around ..... Also double checked all wiring and found to be as it should be.
 

Peato40

Well-Known Forum User
Now I think I know what the problem is. I stripped down the dizzy and tested the resistance of the pick up coil and found it to be zero Ohms

Anybody got one spare or know where I might source one?

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jonbills

Membership Secretary
Site Administrator
Did you get this sorted?
I’m trying to get my 280zx dizzy working again (at the same time as installing the Nodiz! - I don’t want to throw the dizzy away nor do I want to put it in the loft broken)

I’ve got a new module, coil, rotor and cap and still it doesn’t go, so it’s probably the reluctor/magnet or maybe my new module is duff.

I’ve been going through the FSM tests and I’m stumped on the coil output test - says the ac output signal should fluctuate as the dizzy rotates, with a pic of an analogue dial gauge. My digital meter shows a tiny fluctuation, and I can’t decide if thats a pass or fail.
Anyone got any experience of testing the output from the coil?
Anyone fancy testing a working one on a digital meter for me?

Ta!
 

AliK

Vehicle Dating Officer
Staff member
Club Member
Mr Billsmills, you need ideally an oscilloscope or an analogue multimeter- this is precisely why I never threw mine away
 
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