1977 GL 1000K2 COILS

[Oddjob]

Both coils failing at the same time points more to a power supply problem than a coil one, probably a kill switch problem.

[heli_madken]

Yes I checked over everything at the time but could not find an issue. Replaced the coils with new and the bike ran great for the next three years before I sold it, still around today from DVLA records.

Just very unlucky I think. Worst part was getting a tow from my Dad in his MK2 escort home. Scariest thing I have ever done on a bike, going round corners the car was pulling me over. Madness of youth, but at the time getting someone to transport the bike home was very difficult and the garage I had bought it from (Rogersons of Orell) were not interested at all as the bike was out of warranty.

[McCabe-Thiele (Ted)]

Oh yes the madness of youth - my late father towed me with a rope  from Grimsby to Sutton on Hill, Derby back in 1968 when my Mini broke down due to a snapped oil pump drive. To make it extra scary it was winter!

Only had a bike tow once for about 3 miles when my Triumph 21 refused to start - that was 3 miles to many.🫣🫣🫣

Tow vehicle was an Aerial Leader,

[Oddjob]

I would suggest the coil problem Ken was the connector that feeds the coils next to the coils, as soon as you disturbed it it started to work again and plugging new coils into that connector meant it was fine again.

[heli_madken]

No in testing once I had the coils off the bike they were completely dead no output at all. I spent a lot of time at the roadside and at home working through connections etc. I had enough knowledge by then to realise I had no spark but was still getting power to the coils and a switching input from the points system.

With a new set of coils the bike fired right up.

[Oddjob]

Odd, both at the same time? Never heard of before.

[Bristolbadger]

Alright fellas, I bought a pair of these 2 years ago and just had one go dead on me.

https://www.ebay.co.uk/itm/391648128024?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=jB7g0RZOSta&sssrc=2349624&ssuid=SvEr97QAR_K&var=&widget_ver=artemis&media=COPY

They sell the same generic one (reads 4ohms) for multiple listings.
Have just asked for a refund.. you never know

[Oddjob]

Try restoring an old oil using the Ash method. Far more reliable and a good sense of satisfaction when you fix on destined for the bin.