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No spark
I replaced the stator and reg/rec on my 1981 GS450 a couple of months ago and only had the chance to try it out last week. The bike wouldn't rev past 5000 RPM and seemed like it was only working on one cylinder. I confirmed that the LHS cylinder was not firing. Checked the spark on both cylinders, the RHS was OK but nothing on the left. It turned out that the LHS spark plug cap was giving infinity resistance reading while the other one gave 5Kohms. So it looked like I needed a new set of caps but before replacing then I thought I might swap caps and confirm that the LHS would produce a spark using the known good cap. To my surprise, got the same result (no spark). I connected the good cap back to the RHS and this time, no spark on this side either. Both coil resistance readings seem fine (app 3 ohms on the primary) and about 8K between the secondary and ground (with the coil connectors plugged in). I'm beginning to think that the igniter might now be the problem. How can I check if this is the case? Thanks1981 GS450Tags: None
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Originally posted by tom203 View PostHave you removed the plug caps and snipped off about 3/8 inch of plug wire to expose fresh copper for cap to bite into ?1981 GS450
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Originally posted by tom203 View PostIf both sides were firing months ago when you replaced stator and r/r, suspect connection issue from signal coils up to ignitor and ignition coils. Ignition coils are very durable1981 GS450
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Originally posted by tom203 View PostYes, could be ignitor - challenging to test reliably. But you didn't say if it was running on two when you replaced the stator and r/r. Did you have high voltage condition?1981 GS450
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Something on igniter testing here http://members.dslextreme.com/users/...0G_Ignitor.pdfThe big guy up there rides a Suzuki (this I know)
1981 gs850gx
1999 RF900
past bikes. RF900
TL1000s
Hayabusa
gsx 750f x2
197cc Francis Barnett
various British nails
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Originally posted by fastbysuzuki View PostSomething on igniter testing here http://members.dslextreme.com/users/...0G_Ignitor.pdf1981 GS450
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