Secondary IGN waveforms

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spit64
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Posts: 5
Joined: Wed Jun 03, 2015 5:17 pm

Secondary IGN waveforms

Post by spit64 »

I need help to understand secondary waveform on a Audi 100 1988 ignition with a distributor and Bosch mono jettronic fuel injection,Throttle body injection.
Fixed a problem with rich condition and car runs great now passed inspection CO 0,8. But I don't like the secondary ignition waveforms no experience with scope but I now how a good secondary waveform looks like.
I used the MI074 Secondary Ignition Pickup.
Cyl1
Attachments
Audi_100_1998_20160704-0001 sec ign.psdata
(13.47 MiB) Downloaded 545 times

spit64
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Joined: Wed Jun 03, 2015 5:17 pm

Re: Secondary IGN waveforms

Post by spit64 »

Cyl 2. I understand that the waveform is showing both rich and lean but is it interference from other cylinders in the waveform or is it only the probed spark plug wire that I have on the waveform.
Attachments
Audi_100_1998_20160704-0001 sec ign 2.psdata
(13.51 MiB) Downloaded 485 times

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Fat Freddy
TwoWaves
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Re: Secondary IGN waveforms

Post by Fat Freddy »

Plugs replaced?

HTH
FF

spit64
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Posts: 5
Joined: Wed Jun 03, 2015 5:17 pm

Re: Secondary IGN waveforms

Post by spit64 »

Yes plugs replaced my thinking is if all the captured trace is from the probed wire or is it noise from some other spark plugs wire. upload a capture from king lead.
Attachments
Audi_100_1998_20160612-ign king lead.psdata
King lead
(13.29 MiB) Downloaded 490 times

PicoMike
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Location: UK

Re: Secondary IGN waveforms

Post by PicoMike »

(apologies for the delay on approving a couple of posts here)
Mike Valentine
Online BDM: Pico Technology

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