59 ab

[ROBERT JAM]

Trying to wire the engine to run . I don't have a starter switch as of yet. I've got the battery to the starter wiring done ,engine turns over but doesn't fire. Where do the pluse and minus posts on the coil go.

[weemark]

If it's negative earth positive side of the coils goes to the battery, negative goes to the dizzy. If it's positive earth swap the coil round, negative to the battery and positive to the dizzy

[JSeery]

The minus goes to the ballast resistor (battery) and the plus goes to the points in the distributor (and condencer). I have a diagram drawn up I can post when I get to my computer. Assuming 6v, + ground.

[ROBERT JAM]

JSeery the diagram would be helpful ! It's 12 volt thanks Bob

[rotorwrench]

Need more info. What type of coil are you using? Does it have a 59 series distributor or something else?

If it is a crab type and uses a can type coil, it may not need a ballast resistor but will need one if it is a 59 series type Bakelite coil. The condensers can give you trouble and it will need the one that is appropriate to the type of ignition system system you have.

All you need it a push button to ground the starter solenoid. You would only need a key type switch if you are changing the system. Is this engine in a vehicle or on a stand?

[JSeery]

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Ok, 12V Neg ground. Ballast Resistor depends on the coil you are using. I added a simplified version.

Even simpler is to twist the wires together for the toggle switch and touch two wires together for the starter (be SURE they are heavy enough gauge wire, like a heavy duty set of jumper cables)

[ROBERT JAM]

Thanks I'll go give it a try

[ROBERT JAM]

59 series dust and a 12 volt can type coil

[JSeery]

Originally Posted by ROBERT JAM

59 series dust and a 12 volt can type coil

That doesn't narrow the coil down enough, some coil require a ballast resistor and some do not. It depends on the coils primary resistance. You need somewhere in the range of 3 ohms of resistance in the coil circuit. If it is around a 1.5 ohm coil, then it needs a 1.5 ohm ballast resistor. If it is around a 3.0 ohm coil then it will not need a ballast resistor. Just depends on what you have.

If you are just trying to see if an engine will fire up it is not a big issue. You can run the coil/distributor for a short period of time on too much current/voltage with no damage.

[ROBERT JAM]

Just trying to fire it up not goin to run it for a long time

[weemark]

Has it been sitting a long time?

[ROBERT JAM]

Tried that .engine turns over no spark to the plugs

[JSeery]

You are going to have to trace the wiring out and see where the problem is. Power to coil, power to distributor, etc. And DON"T leave the coil connected to the battery very long at all without the engine running, it will burn it up!

[ROBERT JAM]

Ok thanks

[ROBERT JAM]

Could I have a bad coil ?

[JSeery]

Yes, hard to test them, but a quick test would be to check the primary and secondary resistance and see what you have.

[ROBERT JAM]

What readings should I have on the coil.

[JSeery]

Ohms, voltage, amps? First it depends on the coil you have, what is the primary resistance of the coil if your asking the voltage?

[ROBERT JAM]

I guess I'm over my head here Omsk readings are: .01 @ 20k on the terminals and 8.40 @20k on the hot lead ( coil wire)

[ROBERT JAM]

That make any sense to you ? Sorry I don't understand electrics better