Urgent Help Rangie sleeping on roadside tonight!!!

yes.
you have 12v going to the positive of your coil the whole time the ignition is on. the distributor via the hall sensor, switches the negative from the coil, completing the circuit to earth.
everytime a spark jumps out one of the leads, the coil is being enrgised and de-energised. that is how it generates the spark, it's basically a transformer where 12v is transformed into 50,000v or whetever.
normally, transformers will only work on AC voltages, the thing works by the constant reversing of the voltage,as it builds up in one direction a voltage is produced, then as it collapses and runs the other way, an opposite voltage is produced. that's what the "A" stands for in AC, alternating!
so if you put a steady DC voltage on to a coil, you get nothing unless it goes on and off, that is why the distributor switches it on and off via the negative tab of the coil, and this is the point you connect your tacho to (when it's not stuffed)

Hey barney so what are exactly saying its the coil ignition module or the dizzy that has died?

It could be either of those things, but more likely to be the module.

The distributor tells the module when to turn the coil on and off.

Is your ignition system standard or aftermarket?

Quote:

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Originally Posted by British Bulldog

I have power to both sides of the coil while its trying to start.

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Should have 12v on the +ve side and a switched +ve on the negative side.

Standard I believe just the ignition module under the coil.
By the way people its not the coil as I went to super not so cheap bought a brand new one still no spark. So its not the coil. So it must be the module where is the best place to get one and how much

Hey guys
I have got it home I ended up getting it towed. So far I have replaced the coil and ignition module with ones from rover parts. Guess what still no spark. I got the newer module and coil as he said it would be better. So now the only thing that is left is the dizzy. Is it rare for these to die and do they die suddenly or would you notice something before they die. Is there anything else it could be before i go and fork over another $265 as I have already spent $130. Thanks for all your help so far.

Quote:

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Originally Posted by British Bulldog

Hey guys
I have got it home I ended up getting it towed. So far I have replaced the coil and ignition module with ones from rover parts. Guess what still no spark. I got the newer module and coil as he said it would be better. So now the only thing that is left is the dizzy. Is it rare for these to die and do they die suddenly or would you notice something before they die. Is there anything else it could be before i go and fork over another $265 as I have already spent $130. Thanks for all your help so far.

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All there is in that Dizzy is a "electro magnet" ... The "Star spindle" rotates and as each point of the star lines up with the magnet ... It closes the circuit ... that gives the pulse to fire the coil

Do you have a Haynes manual? .... As it explains it perfectly
You can use a Multi meter to test & see if the "electro magnet" is working


Also the gap between the "Magnet & the star" has to be set ...have you checked it ... should be ...

Feeler gauges (non Ferrous)
Imperial ... 0.008 to 0.014 in
Metric .... 0.20 to 0.35mm




Just a thought
Have you checked the Rotor Button? ... These can fail even when new .. Swap it for the other one that you have

Have you looked at the Dizzy cap ... I would not expect this to Totally stop spark ... So doubt if this is a problem

Have you checked that Power is actually getting to the Coil? (multi meter)


Best of luck

Mike
:)

it's not a magnet as such, it's a hall sensor. as the spike on the dizzy spindle passes across it, it generates a very tiny current which acts as a trigger to switch the ignition module.
although it has to do with moving magnetic fields and different metals, it's not a magnet, that would be too slow to react.

Quote:

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Originally Posted by barney

it's not a magnet as such, it's a hall sensor. as the spike on the dizzy spindle passes across it, it generates a very tiny current which acts as a trigger to switch the ignition module.
although it has to do with moving magnetic fields and different metals, it's not a magnet, that would be too slow to react.

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Thanks, Barney .... :)

Quote:

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Originally Posted by British Bulldog

I got the newer module and coil

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Did you hook up the positive and negative terminals up the correct way to the module? .... As it will not function (work) if you have reversed it

Recheck the wire connection

On my RRC ....
I also upgraded from a 2 pin module to the 3 pin module ... and hooked up the positive and negative terminals to the module the wrong way ..and it did not work ... So I reversed it and then fired up (worked)

Note .. if it is the 3 pin module that you got ... The middle pin has no wire connection ... just the 2 outside ones


ANOTHER THOUGHT
Also you said that you melted the Tacho wires ... Have you checked the wire loom going to the Dizzy from the coil ... for other shorted wires?

Also there is that capacitor that bolts to the coil ... Disconnect it .. just incase it has shorted


Hope it helps

Mike
:)

Give me a call on 0415850907, if you can be bothered getting to Cheltenham on Saturday or Sunday I have some solutions to get you going again.
For a lot less than what you have paid so far.