Do they have C.O.P ( Coil Over Plug ) lead ?

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Do they have C.O.P ( Coil Over Plug ) lead ?

Postby riech » Sun Jun 26, 2005 2:27 am

I would like to know if they gave this type of lead
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Postby Sarah » Mon Jun 27, 2005 10:31 am

Hi

Thank you for your post.

I do not believe that this is something that we sell. You might instead like to try RS Components.

Best Regards
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Postby Carl Grotti » Tue Jun 28, 2005 4:00 am

Hi Sarah,

You are correct with your belief that you don't sell this type of lead, nor should you. Actually it would be an adapter that surrounds the coil for secondary then a pickup would be placed on it. There is actually no need for such an item that I'm aware of since primary is mirror of secondary. Certainly these are produced, but have little value for diagnosis.

If our guest would like to discuss this further, I will honor that.

Regards,
Carl
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COP

Postby Autonerdz » Tue Jun 28, 2005 2:00 pm

Good point Carl. You can view the spark line characteristics looking at the primary voltage.

However, several COP models have the coil driver inside the coil. On these type, you cannot ever look at primary voltage. So, if you do want to see the spark line for combustion analysis or whatever, you will need some method of picking up the secondary.

A very effective pickup can often be fashioned out of a bit if tinfoil:

http://www.autonerdz.com/cgi/yabb2/YaBB ... 1096772088
Last edited by Autonerdz on Mon Apr 19, 2010 3:13 pm, edited 1 time in total.
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Postby Carl Grotti » Wed Jun 29, 2005 1:35 am

Hi Tom,

I wasn't aware of many COP systems that primary voltage wasn't accessible except some IDI or Cassette units. However, the secondary on these can be accessed via HT jumper leads. GM CNP primary isn't available, but of coarse secondary is.

Would you have an example?

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COP

Postby Autonerdz » Wed Jun 29, 2005 3:36 am

Hmmm. Nissan comes to mind, Carl. 1995 Maxima 3.0 COP is a good example (at least the US flavor). The coils have three wires. Power, ground. and IC. The power transistor drivers are inside the coils so primary voltage access is completely impossible.

Some Toyota/Lexus also have the igniters inside the coils.

:shock:
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Postby Carl Grotti » Wed Jun 29, 2005 4:55 am

Ah yes...those models explain why I didn't know.

Thank you!

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COIL ON PLUG

Postby NAVEEN » Wed Jan 04, 2006 5:00 am

THIS IS NAVEEN FROM INDIA.
PLESE GIVE ME ONFORMATION ON COIL ON PLUG.I AM DOING A PROJECT ON IGNITION COIL


NAVEENSAMUEL@GMAIL.COM
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Postby Carl Grotti » Wed Jan 04, 2006 5:28 am

Hi Naveen,

Good luck with your project. Is there anything in particular you are interested in with COP ignition? Do you need manufacture specific data or would general be ok? If you could give us an outline of your goals, that would be helpful.

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