GS850 no spark 2&3

[bboystyle24]

Hey Everybody, Last year I bought a 1981 GS850 in really nice condition with 8,000 miles. The bike has no spark on plugs 2 and 3 and when the problem occured the PO parked it an it's sat for 7 or 8 years in a shed.

I got the carbs all cleaned up and back on the bike but i can't get it to even run on just the two cylinders so i'm really at a loss on how to test or diagnose the problem...

I am a novice with just basic engine knowledge so any help/ideas would be appreciated!

[BassCliff]

Greetings and Salutations!!

Hi Mr. bboystyle24,

The #2 and #3 plugs are fired by the right coil (as you sit on the bike). The coils are under the fuel tank. Check connections and voltages. Look in the electrical section of my little website for more information. Let's hope you do not have a failed igniter. One time I lost spark on #1 and #4 (fired by the left coil) and found this: Simple Coil Repair (PDF file).


Anyway, let me dump a TON if information on you and share some GS lovin'.

I just stopped by to welcome you to the forum in my own, special way.

If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....

Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", "Top 15 Tips For GS Happiness", the Carb Cleanup Series, and the Stator Papers. All of these tasks must be addressed in order to have a safe, reliable machine. Now let me roll out the welcome mat for you...



Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike!

Thanks for joining us. Keep us informed.

Thank you for your indulgence,

BassCliff

[TheCafeKid]

You need to start by breaking the carbs down and cleaning them fully. A simple going over with a bike thats sat that long wont do it. They need to be disassembled and soaked in Chemdip over night and then sprayed out with Carb cleaner and compressed air and the rubber viton Orings replaced with new (available at www.cycleorings.com for about $20 shipped) Once youve done that, you'll either, from the sound of it, be replacing the right side coil, (fires 2-3 cylinder) or the ignitor (not cheap, better swap to a Dyna S ignition...)

[bboystyle24]

Thanks for the advice guys! It's slow going with me but the bike is in such good condition cosmetically that I have to fix it right. you say the right coil fires 2 and 3? thats not the way it's set up currently?? hmmm.... and any adivce on where to look for a Dyna S ignition?

Thanks Again, Brandon

[JEEPRUSTY]

Thanks for the advice guys! It's slow going with me but the bike is in such good condition cosmetically that I have to fix it right. you say the right coil fires 2 and 3? thats not the way it's set up currently?? hmmm.... and any adivce on where to look for a Dyna S ignition?

Thanks Again, Brandon

You may wish to hook up your wires correctly. My guess is bad pickup coil.

[JEEPRUSTY]

wait a minute lost spark ignition. What you describe is unpossible. What wires are going where at present?

If 1 and 4 have spark and are wired wrong then both coils are firing.
Am I right guys?

[Big T]

wait a minute lost spark ignition. What you describe is unpossible. What wires are going where at present?

If 1 and 4 have spark and are wired wrong then both coils are firing.
Am I right guys?

You're wrong
'
It's 1-4 and 2-3 on the coils

[JEEPRUSTY]

You're wrong
'
It's 1-4 and 2-3 on the coils

I understand that but I think he said it was not wired that way at present.

[BassCliff]

Hi,

We have come to realize that there is nothing impossible for a previous owner, hereby known as "PO". It may be that the PO has switched some wiring around while trying to get it running again. Get a wiring diagram from my website and put things back the way they're supposed to be.


Thank you for your indulgence,

BassCliff