The Autonerdz Community Forums - Cop Coil Primary waveform

	Welcome, Guest. Please Login or Register

Home

Help

Member Map

Event Calendar

The Autonerdz Community Forums › › › Cop Coil Primary waveform

‹ Previous Topic | Next Topic ›

Pages: 1

Send Topic

Cop Coil Primary waveform (Read 132 times)

James H Senior Member Picogroup Offline Bike Nerd Posts: 165 Waterloo Ontario Canada Gender:	Cop Coil Primary waveform Feb 17^th, 2017 at 2:21pm Thought I would post this for those of us less knowledgeable an example of a Cop Coil Primary waveform from a Suzuki GSXR750 Fuel Injected bike with a fouled spark plug.
Back to top	gsxr.pdf (478 KB \| ) WWW IP Logged

rayray LSD Guide Picogroup Offline Posts: 2,207 Toronto Ontario Canada Gender:	Re: Cop Coil Primary waveform Reply #1 - Feb 18^th, 2017 at 1:54pm The fouled plug is the pink or purple trace? The blue trace looks like it has no spark time? I guess the red trace is the injector amps? The COP coil with the fouled spark plug, can it fire a spark tester set at 30kv? Ray
Back to top	Ray IP Logged

James H Senior Member Picogroup Offline Bike Nerd Posts: 165 Waterloo Ontario Canada Gender:	Re: Cop Coil Primary waveform Reply #2 - Feb 19^th, 2017 at 10:34am Ray, the blue trace is the fouled plug. I'm not sure about peak coil output but it easily jumped a spark tester gap of a 10mm or so. Red was the current. The pink is a good cyl for reference. James
Back to top	WWW IP Logged

rayray

LSD Guide
Picogroup

Offline

Posts: 2,207

Toronto
Ontario
Canada
Gender: male

Re: Cop Coil Primary waveform
Reply #3 - Feb 19^th, 2017 at 4:47pm

The spark tester gap of 10 mm is .394 inches, which is less than half an inch. The recommended Ford COP spark test is three quarters of an inch or 19 mm.

The blue trace is the fouled plug. Is it oil fouled or is it wet, fuel fouled? Is there a carbon track on the spark plug insulator or in the COP boot?

The red 1 amp trace would show an injector resistance of about 14 ohms and I think I can see the injector opening humps.

Ray

Ray

IP Logged

James H Senior Member Picogroup Offline Bike Nerd Posts: 165 Waterloo Ontario Canada Gender:	Re: Cop Coil Primary waveform Reply #4 - Feb 20^th, 2017 at 5:25am It was fuel fouled. The spec for injector resistance is 11-13 ohms. Thanks for the tip on the spark gap.
Back to top	WWW IP Logged

Pages: 1

Send Topic

‹ Previous Topic | Next Topic ›

« Home

‹ Board

Top of this page

Autonerdz forums