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As part of a diagnostic from my other thread, I pulled the float bowls to see if there was any unexpected bits. The good news is there was not. When I removed the 17mm nut there was an aluminum crush

Finally got some time to look at the bike. I pulled both plug leads an did a quick check. Both leads were showing next to "0" resistance. I bent and folded the leads while checking to see if there was

Scott I'm assuming if I check the resistance in the HT lead I'd see the issue----most definitely, it is quite concerning to see a spark arching against the petrol tank. Kirk it turned out to be the

With similar symptoms, I was recently embarrassed to discover a poorly adjusted enricher cable on one side - just slightly sticking open. But it made for the worst running at 2000-2500 rpm and huge

Original R90/S & R90/6 spark plug leads have an additional insulator that looks like a section of fuel line on them. Do your spark plug wires have this additional insulation on them? Ted

It could very well be that you have bad ignition wires. Sometimes it is hard to spot fine cracking of the insulated wiring. The fact that these wires are as old as they are, leads me to suspect them

I confirmed the bike does have the 400W upgrade, which was done in 2006 with the DYNA III. I pulled the float bowls last night and both were clean. Checked the float action and confirmed the needle

Don't take it literally,? its an engine model!The colours I presume are for illustration purposes onlySent from my Samsung Galaxy smartphone.

Don't take it literally,? its an engine model!The colours I presume are for illustration purposes onlySent from my Samsung Galaxy smartphone.

Joe, it's magic :-) Marketing. Mac Kirkpatrick Glenmoore, PA "After all, what is adventure, but inconvenience, properly regarded?" C. Donahue wrote:

That is very cool, but how can it be 1973 with Daytona Orange??? -- Joe Dille Telford PA http://home.jtan.com/~joe/joe.htm What happens on earth stays on earth

Pretty cool engine model https://www.amazon.com/BMW-Airhead-Engine-Collectors-Manual/dp/B07LDC9MJW Mac Kirkpatrick Glenmoore, PA "After all, what is adventure, but inconvenience, properly regarded?"

Decades ago my R65LS exhibited similar behaviour. I carried out the following test. At night, in a practically darkened garage I fired up the bike and looked at the petrol tank/hi- tension leads. The

Maybe take your float bowls off and see if any water or particles floating around. Since it ran so good first time I doubt it is ignition related, sounds like fuel Richard Chawes

Hi Joe, Once it was above 3000 rpm it seemed to smooth out a bit and seemed to be running on both. Running on one I would expect a pretty good shake as well, which I didn't have. I had the odd

Scott, I can't say about your ignition or charging system. However, one thing that would be helpful would be to know is the if bike is running on 1 or 2 cylinders. The best way is to use an IR

This is a new to me 74 R90S with a DYNA III Electronic Ignition and, I believe, the upgraded 450 Watt charging system. Again, this bike is new to me, but I have attached photos so maybe the trained

I cannot say enough good things about Roger at Ikon USA.? He spend an inordinate amount of time with me in selecting the correct springs for my R90S.? The guy knows his stuff. No skin in the game,

I have a shock compressor and will offer it to anyone needing to rebuild if they want to stop by. I used it to install new shrouds on my R90S Konis and didn't take long. Steve in NH

See https://www.ebay.com/itm/283959646271?ssPageName=STRK%3AMEBIDX%3AIT&fromMakeTrack=true Mac Kirkpatrick Glenmoore, PA "After all, what is adventure, but inconvenience, properly regarded?" C.