Ignition Primary DIS - COP Probe
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- Ignition Primary DIS - COP Probe
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NOTE: Part are available from Jameco, Mouser & Digi-Key, with part numbers and details of construction available inside our publication (book & DVD) for this series.
It is hard to believe, why tool and equipment manufacturers, haven't made an effort to make a viable and useful D I S Distributorless Ignition System, or C O P Coil-On-Plug probe, like the Ignition Primary D I S - C O P Probe. The reason is probably because it can be built inexpensively, and therefore, their profit margins wouldn't amount to much.
Now, to shed some light on the subject. All forms of distributorless ignition systems, whether coil on plug or waste spark systems, employ separate ignition coil circuits to fire the spark plugs. In most modern engines, D I S has given way to the coil per cylinder system, called, Coil-On-Plug. With the distributor gone, which was a mechanical device, it is now easier to acquire ignition signals.
Or, is it really? Well, maybe not.
The problem is that coil on plugs are ...
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I hear you and think it's great that you're spending 3 months in electrical systems alone. I've trained and tutored many techs over the years. Some of them, now being in the field for years, I got them started in a 1 year electronics program. And that is what sets them apart today. We do have other series right on this channel that deal with what you need. Click ADPTraining anywhere and review our other playlists. It's all FREE. Hope that'll help...Thanks.
No, the diodes are not the issue. You're almost there. All you do now is mess around with the resistor capacitor combo. Your capacitor is discharging too fast, hence the sawtooth waveform. Try a little bigger cap or use different resistor values. I assume you're using a breadboard. The values on the diagram have worked for us, but maybe the diodes are a bit different characteristics, but don't bother with the diodes. Let us know how it goes.
Building these gadgets is a 123 deal. There's really not much to show. All you need is the diagram and some courage to build it. We have lots of hands on videos, but for this series it fall outside its scope. I appreciate your input. Thanks for posting.
No, you need the dual resistors for voltage drop. The small cap is to filter out the signal. Mess around a bit with the capacitor value. Get an assorted capacitor pack from RS. Let me know how it goes...
The chassis is ground. If your chassis is not at ground potential then you have a ground issue.
Use general purpose diodes. They're available at MOUSER, RADIO-SHACK, DIGI KEY, etc.
Thank you... We have more good things planned for this series... Keep posting and participating.
Yes, one diode per cylinder...
Why are there so many diodes? Does this represent a connection for each cylinder? Also, say if I have them all connected, and I have a high firing line, do I disconnect one lead at a time to see when I get a better pattern to isolate the problem cylinder? I like your stuff by the way, very cool. I have some videos up myself now too. Just type in busjockey1 for the search. I have some cool videos on the loadpro test leads and some other electrical troubleshooting videos. Thanks.
may be easy for you, but some of us are barely getting in the business, maybe im not experienced enough, my next class is electrical, that should halp a lot, 3 months on elctrical only
no i just soldered it all together maybe that's the problem,but couldn't you just leave out everything but the diodes and go directly to a bnc connector?
I built this but all i get is a saw tooth looking pattern. Maybe i used the wrong diode. Got any ideas?
Great videos, I was wondering what the ground goes to in the schematic, the one just under the resistors and capacitor? Is that going to a sheilded cable out for the scope leads? Thanks for the information
I would like to build this project , but I would like to know the value of the diodes .....
GREAT VIDEOS !!!
this should work equally as well for fuel injectors, no??
Well, be careful if you do use it for that. The current pattern is a bit different. Having said that, they're very similar. The current draw on an injector is about 900 milli-Amps. Just remember that. Thank you.
yes, the wave pattern would not be the same, but i mean as far as verifying that each injector is firing and staying open for the correct amount of time.
deth502
Here's our latest product: www.autodiagnosticsandpublishing.com/Injector_Pulser_Tool.html
You should start showing us hands on video, im sure we would all apriciate it
im always on your videos, theyre great, and helpful
It just goes to ground on the chassis right?
I used a 1mH choke in a piece of vacuum tube as a sensor, and connected this via a longish screened cable to the amplified sensor amplifier also shown by adp, using this I can test magnetic fields around injectors, ignition coils and alty's.
It can also be used as the receiver for fox/hound type cable tracker if you connect a piezo speaker to the output socket.
A really usefull gadget, commercial ones cost a packet.
+sean doofer Thanks Sean, I tried to expose some money saving examples here and in the book/DVD as well. This video is part of it. Here it is... www.createspace.com/pub/simplesitesearch.search.do?sitesearch_query=make+your+own+diagnostic+mandy+concepcion&sitesearch_type=STORE
Thanks for the reply, i have the book myode, not bad.
I have put together some of my own gear too, some a little more complicated.
sean doofer I
thank you