Help Needed

[Kingpaul]

Hi guys.. really struggling getting a spark, just got a brand new coil today is i thought that was the problem. And still no spark. I've got 4.2 ohms going in which is just right.
I've got power coming from my stator (generator)

I think my Ignition unit needed wiring up better could that be the problem?

could anyone point out stuff to check for?
or useful threads??

Thanks

 

[Kingpaul]

I'm reading about points gap. how do I set the points gap on my 81'??

Edit: reading that the 81 doesn't use the points system..

 

[richardthemotorcycle1]

I'd go to the Tech section, look under Electrical, lots of good info.

 

[XSLeo]

If you have an 81 it comes stock with the TCI ignition. It uses a 2.5 ohm coil. The 4.2 will be ok with pints but not right for the TCI.
I might check for voltage at the red/white wire at the coil and TCI box, it's under the battery box.
Both should have battery voltage.
Oh, one more thing, in your repair manual there is a section on testing the ignition system. In the Clymer book, page 196. 80 up ignitions.
Leo

 

[Kingpaul]

If you have an 81 it comes stock with the TCI ignition. It uses a 2.5 ohm coil. The 4.2 will be ok with pints but not right for the TCI.
I might check for voltage at the red/white wire at the coil and TCI box, it's under the battery box.
Both should have battery voltage.
Oh, one more thing, in your repair manual there is a section on testing the ignition system. In the Clymer book, page 196. 80 up ignitions.
Leo

If I have an EMGO coil with one Black (-) and one yellow (+) how do I make that work with my xs650 where the coil I had was one RED/WHITE and one Orange?

any suggestions?

 

[fredintoon]

Hi Kp,
Leo sez your 4.2 Ohm coil is not right for your TCI ignition so get one that is?

 

[Kingpaul]

Do you have a link to a 2.5 ohm coil compatable with my 81 TCI xs650

 

[XSLeo]

Ok, Yes you need a 2.5 ohm coil to work with the stock TCI.
You can get one from Mike's XS, 650central, Ebay.
All these coils are dual output coils. That means the primary side is not polarity sensitive, so the wires can hook any way you like, as long as one goes to power and the other to the ignition.
Leo

 

[fredintoon]

Do you have a link to a 2.5 ohm coil compatable with my 81 TCI xs650

Hi Kp,
what Leo sez, or even here on the site.
Check out bkaushansky's for sale post in the want ads forum.

 

[Kingpaul]

Hi Kp,
what Leo sez, or even here on the site.
Check out bkaushansky's for sale post in the want ads forum.

Thankyou, I sent him a PM, I can't find one on ebay, only the 3-5 ohm units,
And mikes xs has the correct one but astronomical shipping rates, trying to avoid that

If you know of anywhere else let me know

 

[nj1639]

What does your old coil ohm out to?

 

[Kingpaul]

What does your old coil ohm out to?

My coil has no output that's why I need one, the emgo coil doesn't have output either,

 

[fredintoon]

My coil has no output that's why I need one, the emgo coil doesn't have output either,

Hi Kp,
if you mean that you can't get an Ohm reading on either coil it's most likely you ain't doing it right.
Alternatively, if you mean that neither coil will spark when hooked up to the ignition system on the bike it's most likely that something else is wrong.