The Stag Coil setup

[Guest]

Up to recently My Stag has been a top starter but now it just will not light up at all.In the past with other cars I have owned this problem has been rectified with a new coil.In the Stag workshop manual it states they are fitted with a 6 v coil but I note mine has a 12 v coil.Am I on the right trail or is there another remedy for this problem?

[V Mad]

This confusion of 6v or 12v is very common. Sometimes the explanation just makes it worse, but here goes again:

The stag uses a coil with ballast system. This means that the ballast and the coil share the battery voltage approx 50% each. So the coil only gets about 6 ot 7 volts. The xception to this is when cranking (starting) when the coil should receive a boost to full battery colts, ie 12 to 14 volts.

When you buy a coil, you must ask for a ballast coil. If the coil is just marked 12V standard it is probably not a ballast type.

You can tell by measuring the resistance between the two LT terminals; this should read 1.5 ohms for a ballast coil, or 3 ohms for a non-ballast coil.

BTW: the ballast on most stags is part of the wiring loom and cant be seen. On early cars there is a visible ballast resistor fitted near the coil instead of the loom.

[KOY 23]

Yes Chris, you are right, there is a lot of confusion. I am confused how the battery voltage of an engine being cranked is 12 to 14 volts.

By the way, was my answer to your fuel tank problems any help?

John.

[dasadrew]

....should receive a boost to full battery colts, ie 12 to 14 volts.....

Yes Chris, you are right, there is a lot of confusion. I am confused how the battery voltage of an engine being cranked is 12 to 14 volts....

John.

John, you're confusing battery volts with battery colts (= horsepower of the battery)

[Princejohny]

John, you're confusing battery volts with battery colts (= horsepower of the battery)

I thought the latter is the fire power, when you finally put a match to the serial non starter, Drew... Mine's played Stag Russian Roulette before.

Cheers Johny

[GDPR]

You all have far too much time on your hands...

[KOY 23]

john, you're confusing battery volts with battery colts (= horsepower of the battery)

That makes more sense.

[Bob Heritage]

:d:d:d:d

That makes more sense.

Go- Reply-Advanced-Preview post, then edit that --it will make you smile again

[KOY 23]

Thanks. I submitted post rather than preview and then submit. The simple way usually works.

[Guest]

Thanks for the info on my problem.

[Guest]

Thanks Chris for your reply. How can I find if the ballast is part of the loom and can I fit a ballast coil if there is a ballast in the loom?

[V Mad]

I posted a test you can do to find out if ballast is fitted and working. Try a search I am sure you will find it.