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Ignition coil Amp (Read 247 times)

James H Senior Member Picogroup Offline Bike Nerd Posts: 165 Waterloo Ontario Canada Gender:	Ignition coil Amp Jun 7^th, 2023 at 2:47pm Never seen a ignition coil amp ramp like this. Comments? Bike is intermittent no start.
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JÜJA Guru Member Picogroup Offline Posts: 311 San Cristòbal de las Casas, Ch Mexico Gender:	Re: Ignition coil Amp Reply #1 - Jun 8^th, 2023 at 2:50am The current probe may be pickinig up noise from the secondary, especially after primary shut off. Is the current ramp the same on no start compared to starting/running? Is there more than.one coil?
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HarleyMike Super Nerd Picogroup Offline Posts: 1,308 Dinwiddie County Virginia USA Gender:	Re: Ignition coil Amp Reply #2 - Jun 8^th, 2023 at 5:52am Agreed on the noise. I try not to diagnose coil failure by using "ramptronics" but look at the difference in these 2 ramps, also the difference in dwell. Maybe something or maybe nothing. What controls the ignition timing? crank sensor , cam censor? Maybe worth a look at those inputs.
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James H Senior Member Picogroup Offline Bike Nerd Posts: 165 Waterloo Ontario Canada Gender:	Re: Ignition coil Amp Reply #3 - Jun 8^th, 2023 at 10:27am It is a single cylinder. I did notice the difference in Dwell....It is transistorized ignition and uses a VRS sensor (2 actually) to determine ignition for better resolution as it is kickstart. I have scoped both of those and they look clean and good.
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James H Senior Member Picogroup Offline Bike Nerd Posts: 165 Waterloo Ontario Canada Gender:	Re: Ignition coil Amp Reply #4 - Jun 12^th, 2023 at 12:42pm Wiring Diagram
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HarleyMike Super Nerd Picogroup Offline Posts: 1,308 Dinwiddie County Virginia USA Gender:	Re: Ignition coil Amp Reply #5 - Jun 13^th, 2023 at 5:55am Is it possible the condenser is not absorbing the left over energy and that is the additional spike we are seeing in the current ramp? That sorta spike could definitely blind an ECU momentarily.
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James H Senior Member Picogroup Offline Bike Nerd Posts: 165 Waterloo Ontario Canada Gender:	Re: Ignition coil Amp Reply #6 - Jun 13^th, 2023 at 6:40am The capacitor is there for starting as it has no battery, a couple of kicks charges the cap from the alternator which allows enough voltage for ignition and fuel pump for starting, then is a non essential for running.
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HarleyMike

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Posts: 1,308

Dinwiddie County
Virginia
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Gender: male

Re: Ignition coil Amp
Reply #7 - Jun 13^th, 2023 at 9:50am

James H wrote on Jun 13^th, 2023 at 6:40am:

The capacitor is there for starting as it has no battery, a couple of kicks charges the cap from the alternator which allows enough voltage for ignition and fuel pump for starting, then is a non essential for running.

Interesting, Ive never tested a bike ignition. Other than the method of starting it seems very "car like"

James H wrote on Jun 13^th, 2023 at 6:40am:

The capacitor is there for starting as it has no battery, a couple of kicks charges the cap from the alternator which allows enough voltage for ignition and fuel pump for starting,

Givin' the complaint, More of a reason to take a peek at it. Smiley

~DatSoon Tech.~ Carter's Diagnostics on YouTube

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