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spark

  • Thread starter Thread starter JStones
  • Start date Start date
J

JStones

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Went out ran the bike and it died. Checked, no spark. Tried later on, bike worked. So intermittent spark is my issue... Please let me know what I should be checking and it what order... any initial thoughts?
 
JStones said:
Went out ran the bike and it died. Checked, no spark. Tried later on, bike worked. So intermittent spark is my issue... Please let me know what I should be checking and it what order... any initial thoughts?
Click to expand...
This must be the bike that cured itself a few days back and now has returned to its old ways. So "ran the bike and it died" means it started ok, ran somewhat and suddenly died ? Not slowly died but suddenly?
 
Well to resummarize, I went for a ride and all was well. Went for another ride and it died. Got it home and checked everything, no spark. I checked fuses, looked for any loose wires.. found nothing. I had to do some other things and later on my father stopped by.. I told him the bike was running and he tried to start it and it fired right up and ran... currently no spark.. So like I said, my best diagnosis is I have intermittent spark. Looking for help on troubleshooting.
 
and to answer the previous question. When it starts it runs great, putters out and dies. All random times, nothing consistent.
 
Does anyone know if I have a ND or KOK Ignition type? I'm unfamiliar with those terms.
 
If your bike is an 80 as listed in your sig, it has factory electronic ignition and KOK vs ND is moot. If you're trying to select a Dyna S to install, you need the ND version, DS3-2.
 
JStones said:
What am I looking for when testing plug caps?
Click to expand...

You'll check the resistance of the caps. Secondary impedance with factory caps installed should measure in the 30-35 k ohms; about 10k per cap and about 14k for the coil. The normally recommended NGK caps are 5k each. If you unscrew the caps you can check all the components independently.
 
mike- bare with me here. Ive been learning on the fly with this thing. First bike. Im on Z1 poking around at ignition coils etc. I see the Dyna 3-2 you referenced but also see ignition kits that are under 20 bucks and are OEM replacements.. Are Dyna type worth the change or is it what I need? The $ isnt a issue if its worth it.
 
Here's a common problem with the GS bikes:

The fuse blocks use an older style cylindrical fuse that upon inital inspection may appear to be OK - the fillament within the fuse may break loose from one end and make intermittent contact causing an occasional no-spark/no start condition.

When you have no spark, check to see if any other parts of the bike (cluster, etc) have no power.
 
You're probably looking at points, then. If your bike is truly a 1980 model then it will not have points. It would have come equipped with factory electronic ignition; a signal generator with rotor and an igniter. Points were used 1977-1979. On the 550s and 750s only there were two different points systems which could have been used, KOK and ND.

Here's what you SHOULD see if you open your GS550LT ignition cover (no points/condensers):

42.gif


The igniters particularly are known to go bad and become "intermittent". The Dyna S DS3-2 will replace both the signal generator and the igniter. You'll want to make sure your coils are up to snuff. The coils plus the Dyna S will basically be your entire ignition system if you install it.

Some (including myself) think that igniters go bad much more quickly when the charging system voltage is too high. If you have a bad igniter, make sure you check your charging system for correct operation immediately upon getting the bike running again.

JStones said:
mike- bare with me here. Ive been learning on the fly with this thing. First bike. Im on Z1 poking around at ignition coils etc. I see the Dyna 3-2 you referenced but also see ignition kits that are under 20 bucks and are OEM replacements.. Are Dyna type worth the change or is it what I need? The $ isnt a issue if its worth it.
Click to expand...
 
Mike- I am going to take it apart this evening and see whats in there. Just as a side note, I walked by the bike this morning and hit the button and she fired right up.
 
The igniter box should be mounted on your airbox I think, but you'll see the sig gen under that cover. Unless your motor was replaced with an earlier model (do you have a kick starter?) then there's no way you should have points under there. Did you check your coil voltage drop (this is a big one - search "coil relay mod")? Secondary and primary coil impedance? Plug boot resistance?
 
JStones said:
Mike- I am going to take it apart this evening and see whats in there. Just as a side note, I walked by the bike this morning and hit the button and she fired right up.
Click to expand...
Have you tried new main and ignition fuses ? sometimes they look/ behave ok and then heat up and break circuit. And as recommended, check voltage at coils.
 
Ok heres what Im working with...

Ok heres what Im working with...

Inside the ignition cover.
 
Obviously no points from what I know.

Mike: I do not have a kick starter. I did not see anything mounted on the airbox but honestly dont know that the igniter box would look like.

Tom: I tried replacing the fuses.


Both, proper procedure in testing coil voltage?
 
Try to follow the wiring that leaves the signal generator -this connects to ignitor box; this is probably a metal box about 2/3 the size of a cigarette pack. It won't have "fins" on it like the R/R has. Somewhere there is a plug that connects the ignitor to the signal generator- find it and clean these connections. As for coils, a one end of each coil there is a orange/white wire that powers up when ignition switch and kill switch are on-disconnect and measure the voltage between this wire and a good ground.
 
Is this the Dyna unit I need?

Is this the Dyna unit I need?

DSC03605.jpg
Dyna-S Electronic Ignition DS3-2 - Suzuki GS fours (with ND ignition) DYDS3-2
OEM: DS3-2 -
1 year factory warranty - for Suzuki 1977-81 GS550 GS750 GS850 GS1000 GS1100 GS1150 (with ND ignition) # 6 Rotor - set and forget - no more messing with points... creates a stronger more consistent spark.

1977-78 GS550 & GS750 bikes, some of these models came with a KD/KOK ignition advancer, for these bikes a different Dyna-S is required. How do you tell? Take off the points cover, the ignition advancer should be stamped with KD (Kokusan Densi) or ND (Nippon Densi). If you have a KD unit, see the DYDS3-1 igntion below.

Below are also tthe two different type points used for the KD & ND setups. Use these to determine if your bike has the KD or ND points installed.
$133.00
 
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