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Ign Coil Testing #577197
20/05/19 01:06 AM
20/05/19 01:06 AM
Joined: Apr 2018
Posts: 34
Colorado, USA
A
AncientMariner Offline OP
Just Getting Started
AncientMariner  Offline OP
Just Getting Started
A

Joined: Apr 2018
Posts: 34
Colorado, USA
I went for a fairly long putt around town to celebrate the new exhaust bobbins that will actually keep the portside pipe from bouncing off an dragging on the pavement. Nearly home, I stopped at a red light and noticed that things had gotten very quiet. She wouldn't start. Added a trickle of fuel, turned the key, I'd hear the expected fuel pump run-then-stop. Still no start so I called a tow truck. At home, checked coil primary and got no continuity. Thinking I just wasn't getting on the contacts down inside the connector shell, I tried the secondaries and got about 10K ohms on each one. That's about what I was expecting, from my Google research. That confirmed that I was able to touch the contacts with my meter leads. Tried the primaries again with the same result. I expected to see 3-5 ohms but read infinity. Installed new NGK plugs. I'm now shopping for a coil. I assume that the coll for Harleys is much the same?


John, retired Marine Engineer
12 M3W
12 MotoGuzzi Griso
10 MotoGuzzi V7 Classic
06 Suzuki Vstrom 650
Re: Ign Coil Testing [Re: AncientMariner] #577198
20/05/19 02:02 AM
20/05/19 02:02 AM
Joined: Apr 2018
Posts: 34
Colorado, USA
A
AncientMariner Offline OP
Just Getting Started
AncientMariner  Offline OP
Just Getting Started
A

Joined: Apr 2018
Posts: 34
Colorado, USA
Any reason NOT to use a Harley p/n 31696-07A coil? USD 39.50 on Ebay.


John, retired Marine Engineer
12 M3W
12 MotoGuzzi Griso
10 MotoGuzzi V7 Classic
06 Suzuki Vstrom 650
Re: Ign Coil Testing [Re: AncientMariner] #577200
20/05/19 02:56 AM
20/05/19 02:56 AM
Joined: Feb 2019
Posts: 922
West of Seattle, USA
LightSpeed Online content
Talk Morgan Regular
LightSpeed  Online Content
Talk Morgan Regular

Joined: Feb 2019
Posts: 922
West of Seattle, USA
If I had to replace a coil I sure would use the Harley coil. Easy to obtain and you don't have to import something.


Stephen
M3W 2019

Re: Ign Coil Testing [Re: AncientMariner] #578649
29/05/19 03:31 AM
29/05/19 03:31 AM
Joined: Apr 2018
Posts: 34
Colorado, USA
A
AncientMariner Offline OP
Just Getting Started
AncientMariner  Offline OP
Just Getting Started
A

Joined: Apr 2018
Posts: 34
Colorado, USA
I was mistaken about reaching the contacts properly on the primary resistance test. With the coil removed and using a light and narrow tester probes, I got 3 ohms on the primaries. Coil is fine. The problem turned out to be a failed timing belt.


John, retired Marine Engineer
12 M3W
12 MotoGuzzi Griso
10 MotoGuzzi V7 Classic
06 Suzuki Vstrom 650

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