Author Topic: K100 lives after 19 year lay-up.  (Read 5608 times)

Offline PaulP

  • ^ Motobrick Curious
  • Posts: 57
K100 lives after 19 year lay-up.
« on: September 09, 2016, 06:22:08 PM »
After 19 years neglected, unloved and alone, I've got my K100 running. Thanks to anyone and everyone on here who has offered their assistance.

I've still a few things to work through as I took a couple of shortcuts just to see if it would run (such as non-FI fuel hose; The rev-counter not working, I found) but somewhere in amongst the cloud of white smoke, it purrs beautifully! I assume this will burn itself off, there may well be a gallon or so of oil accumulated in the cylinders.

A dod of DIY injector cleaning was the final hurdle to surmount.

  • Scotland, UK.
  • '91 K100 LT. Ex-Polizei.

Offline Martin

  • ^ Quintessential Motobricker
  • Posts: 4475
Re: K100 lives after 19 year lay-up.
« Reply #1 on: September 09, 2016, 06:31:35 PM »
Don't worry too much about the smoking, Bricks don't like sitting around. The smoking should reduce, and eventually go away as you put some mileage on her. A bottle of Techron once or twice a year does wonders.
Regards Martin.
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11299
Re: K100 lives after 19 year lay-up.
« Reply #2 on: September 09, 2016, 09:13:59 PM »
Congratulations, Paul!

Will you please give us a step-by-step description of the process being performed in the attached photo? I realize one picture should be worth a thousand words but I could use a few more for that one. I've ruled out pickling beets.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Brad-Man

  • ^ Proficient Motobricker
  • Posts: 360
Re: K100 lives after 19 year lay-up.
« Reply #3 on: September 09, 2016, 11:47:34 PM »
Yes - another pic of the aerosol can showing the label....
  • Marietta, GA
  • '85 K100
Toys don't make the Man - Man makes the Toys...
'74 RD350
'75 RD350 w/Modified 400 engine, Chambers & MZB iggy

Offline PaulP

  • ^ Motobrick Curious
  • Posts: 57
Re: K100 lives after 19 year lay-up.
« Reply #4 on: September 10, 2016, 12:04:39 AM »
Martin;
I was really trying not to worry, I've convinced myself it will be 'fine'. Once I install some properly functioning brakes, I'll take it for a good blast and see if I can't clear it out. I don't want to let it sit and idle for too long, I believe these machines don't like that. I considered a birl up the farm track but I can't find my anchor anywhere, and the bottom of the track terminates in the sea.


Laitch;

Thanks, I'm fair chuffed.

That's a rare photo of my DIY injector cleaning, a technique first perfected on my first car, a BMW as it happens (A 1986 E30 318i; Zinnobar red; RIP)
Ignore the brake fluid, that's a red herring and not involved in the process whatsoever.

I take a length or two of hose, connected to a can of carb cleaner, with the other end of said hose squeezed onto the the injector.

The injector is propped up within a jam jar to better contain the expunged Carb cleaner, and to observe the flow. I also use an old desk fan to prevent me being overcome with the fumes and igniting on my cigarette.

A couple of crocodile clips on the injector terminals, separated by a little piece of insulating material (blue) to prevent acccidental shorting. It's 'Safety First' with me, as you have accurately observed.

Give a skoosh (Technical terminology) of the Carb cleaner and that creates a fair amount of pressure within the assembly. The more slapdash technician may find a less than adequate seal in the hoses, resulting in temporary blindness from the Carb cleaner, and subsequently requiring the addition of a Jubille clamp, but that has never happened to me, ahem....ever.

With the lead coming from the positive terminal of the injector (It is helpfully marked with a +) attached to the positive of the battery, take the negative lead from the injector and tap on the negative terminal of the battery in very short bursts.

A spluttery splurge (Yet more technical terms, I apologise) emits from the injector with each burst, which very quickly becomes a lovely, fine mist. At that point I consider the injector 'cleaned'. One can also hear the strength or otherwise of the 'click'.

Assuming the O-rings are in good condition, and not split or too loose or anything, they are good to go. Some people replace them matter of course, I popped new ones on these as I'd recently purloined some from a friends' shed which were a similar size. (Cheers, Bob)

The mucky injectors were preventing the bike from running, once they were re-installed, it fired up almost instantly.
  • Scotland, UK.
  • '91 K100 LT. Ex-Polizei.

Offline Laitch

  • Faster than a speeding pullet
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  • Posts: 11299
Re: K100 lives after 19 year lay-up.
« Reply #5 on: September 10, 2016, 01:35:24 AM »
Thanks for the detailed tutorial, Paul. This method is sure to catch fire among the Motobrick rehabilitation community!
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline billday

  • ^ Quintessential Motobricker
  • Posts: 1341
Re: K100 lives after 19 year lay-up.
« Reply #6 on: September 10, 2016, 07:33:14 AM »
Brilliant.
  • New York State, USA 10977
  • 1985 K100

Offline PaulP

  • ^ Motobrick Curious
  • Posts: 57
Re: K100 lives after 19 year lay-up. + Injector cleaning method.
« Reply #7 on: September 10, 2016, 10:49:15 PM »
Here you go, a photo of the can of carb cleaner, although not particularly exciting stuff.

It doubles as a handy translation guide for those times you might find yourself in Ukraine, needing something stronger than vodka.

And if anyone does want to try cleaning their injectors as per above technique, it goes without saying to any obsessively litigious US folks that there is a disclaimer attached as long as my arm, ie. don't try it if you're a numptie.

Hope it's helpful to someone, somewhere, sometime......
  • Scotland, UK.
  • '91 K100 LT. Ex-Polizei.

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