SuzukiSavage.com - No spark

Breizhrider

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Brittany
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No spark
09/05/15 at 04:38:25

Hi all.

(i'm french, I'll try to be understandable with my poor English)

I'm the owner of a 87' LS650 since last june. There was some work on it (fork oil, front tire). My savage stayed in my garage during 1 mounth. At least, when I tryed to start it, the engine didn't start (starter & engine working but just one explosion). I tried to start with a car battery, nothing.

The carburetor work (fuel smell), but I have no spark on the spark plug. The coil was melted, I changed it > No spark. I checked the CDI box and it smell like something burned inside. I opened the CDI and 1 component smell burn.

I did a research on this website and I found this: http://suzukisavage.com/cgi-bin/YaBB.pl?num=1293638302/0

My transistor is not melted, but it smell burned and the board looks heated.
I going to change my CDI for a new one. So, what do you think ?

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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: No spark Reply #1 - 09/05/15 at 08:53:14 My transistor is not melted I tried telling them that, too, but they STILL made me take the medicine.
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: No spark Reply #2 - 09/05/15 at 09:10:58 You must left the key on at some point to melt the coil and cdi. Don't run the starter for long periods w/out a rest or you'll overheat it. check your grounds, there's one on the engine and one connector for the cdi.
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Breizhrider YaBB Newbies Offline Posts: 18 Brittany Gender:	Re: No spark Reply #3 - 09/05/15 at 09:36:47 Where is the ground on the engine, please ?
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: No spark Reply #4 - 09/05/15 at 09:58:58 Breizhrider wrote on 09/05/15 at 09:36:47: Where is the ground on the engine, please ? behind the clutch arm.
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Breizhrider YaBB Newbies Offline Posts: 18 Brittany Gender:	Re: No spark Reply #5 - 09/05/15 at 10:21:11 Founded, but what I've to do with ?
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: No spark Reply #6 - 09/05/15 at 10:36:44 remove bolt, clean the tab, bolt and the case. then put back together. did you find the cdi ground?
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Breizhrider YaBB Newbies Offline Posts: 18 Brittany Gender:	Re: No spark Reply #7 - 09/05/15 at 10:40:26 OK, I'll do it after adding more lights in my garage. The night is coming. But what do you think about my CDI ? Is it necessary to change it ?
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Breizhrider YaBB Newbies Offline Posts: 18 Brittany Gender:	Re: No spark Reply #8 - 09/05/15 at 11:20:57 verslagen1 wrote on 09/05/15 at 10:36:44: remove bolt, clean the tab, bolt and the case. then put back together. did you find the cdi ground? No, I didn't... Where it is, please ?
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: No spark Reply #9 - 09/05/15 at 13:34:18 Take off the left body panel and follow the wires. There should be one black white wire follow that to the connection
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Breizhrider YaBB Newbies Offline Posts: 18 Brittany Gender:	Re: No spark Reply #10 - 09/05/15 at 15:12:46 Founded, but I can only check the connexion. The rest of the wire join the negative wire linked to the battery and all electrics wires are under tape... But, why do you want I check my grounds ?
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: No spark Reply #11 - 09/05/15 at 15:16:44 electricity can't flow unless there's a place for it to go. grounds are the most overlooked.
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Breizhrider YaBB Newbies Offline Posts: 18 Brittany Gender:	Re: No spark Reply #12 - 09/05/15 at 15:38:58 Ah ok ! I didn't precise that I checked my spark plug on the engine without result (engine = electrical ground). What do you think about my CDI ? Is it necessary to change it ? Someone told me that it could have burned because of the car battery (same voltage but higher amperage).
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verslagen1

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Where there's a
will, I want to be
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L.A. California
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Re: No spark
Reply #13 - 09/05/15 at 17:33:14

Breizhrider wrote on 09/05/15 at 15:38:58:

Ah ok ! I didn't precise that I checked my spark plug on the engine without result (engine = electrical ground).

What do you think about my CDI ? Is it necessary to change it ?

Someone told me that it could have burned because of the car battery (same voltage but higher amperage).

replacing the cdi is expensive, and the last resort.
It may seem like we're giving you the run around only cause of that fact.
We only have your words to go on and I'm sure they are translated by google... not very reassuring.
let me remind you, pictures are worth a thousand words.

If you have a buddy that'll lend you a cdi to test and it runs, then it's obvious.
until then we test everything else.

1st, what is the battery voltage? it will not spark with less than 10v while running the starter.

Quote:

So I pull off the tank to test the Ignition Coil with a multimeter, and I notice the right hand control/ starter push switch connector is loose where it connects to wiring harness. So I make sure it's connected properly and then (for giggles) I tested for a spark again. And I got it! Great!

to test the coil, we put an ohm meter on it and check resistance.
the primary coil resistance should be 1-7 ohms and the secondary coil resistance should be 10k-25k ohms on the ignition coil.

Also, with the key on, you should have 12v at one of the terminals of the coil.
the coil should fire if the other terminal is shorted to ground.

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Breizhrider

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Brittany
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Re: No spark
Reply #14 - 09/06/15 at 03:27:43

"1st, what is the battery voltage? it will not spark with less than 10v while running the starter."

12v

"to test the coil, we put an ohm meter on it and check resistance.
the primary coil resistance should be 1-7 ohms and the secondary coil resistance should be 10k-25k ohms on the ignition coil."

Primary: 4.5 ohms
Secondary: 12.5 ohms
(It's a "new" coil. The other was melted and shorted)

"Also, with the key on, you should have 12v at one of the terminals of the coil.
the coil should fire if the other terminal is shorted to ground. "

11.8 v on the positive pole of the primary.

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« Last Edit: 09/06/15 at 04:47:19 by Breizhrider »

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