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Discussion Starter #1
Hey everyone,
So a guy i work with went and picked up his first bike a week or two ago. He doesnt know a thing about bikes but thats okay he will learn. In the meantime its my duty to get her running.
The bike, a 1983 Suzuki GR650 Tempter.
Parallel Twin Engine
5 Speed
Looks like it could be a fun little scoot.
Ever heard the stories about horrible previous owners? Your about to add one to the list.
I guess they wanted a military style bobber.
What they had was a piece of junk.
Cut the frame behind poorly executed shock mounts.
Half of wiring harness cut and removed, all other wires replaced with orange.
Headlight wired into ignitor box, wite leading to coils. Shocks and handlebars upside down.
Live ammunition mounted on triple tree pointed towards rider.
The electrical system was one enormous short. Hell, my battery read 0.0.
So I'm in the process of making a new wiring harness and I'm having issues getting spark.
Got a solid 12V going to each coil, and wires from ignitor box going to coils,
Ran a LED light in with the wires from ignitor box and it pulses as I turn the engine over.
Timing does appear to be on TDC assuming the right side cyclinder is #1.
I put a volt meter on the coils,
Get roughly 5.0 on both crossing the small wires.
Swap to 20K and I get number between 10-20K. occasionaly an 8K.
But I cant get the reading to stay solid on the screen, it flashes on then
My question is, is this a sign of faulty couls despite the good numbers?
Plug wires are fixed on coil and im measuring from the end of plug wire and feel like I have a steady connection.

I do a lot of work out of my shed, but am by no means an expert.

He should of bought a Honda. ;)
 

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Timing light

harbor freight has a 19.00 and 32.00 timing light and you can take 20% off those prices by printing a coupon online. I find that a timing light makes a great spark checker that will detect even occasional misfires. For example, bike running a little rough and showing the results to be lack of spark part of the time.

As a bonus, you can even use it to check the timing. After using meters and other shadetree methods,I would not want to go back to not having a timing light. I happen to have the 32.00 unit, but if the cheaper unit will get the job done for you, that would probably work fine as well.
 

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Discussion Starter #4
Oddly a timing light is something i have not invested in yet.
And i kick myself in the butt often for,it.
I tried to write a post yesterday about this bike, i guess it didnt go through.
But i walked away from her for a bit, had a glass of tea and went back out.
There was the problem in plain view staring me in the face, ignitor box was not grounded.
Ground it and tada, spark.
I do think its weird that my ground wire was showing a pulsing 12v.
She fired off last night so this morning i cut wires to length and fixed it all to the bike. She cranks and runs, just got to get her to level out now.
 

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Discussion Starter #5
Bringing back a dead forum.
So oddly today, this bike came up in conversation between me and my coworker. He still hasnt gotten a battery for it or anything, so i offered to buy it for the twelth time and today he finally said yes.
He just dropped it off at my house, this time to stay.
Not sure what im going to do with her, roady worthy is the priority for now,
Needs a lot of loving,
 
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