Clothe yourself in KR
 

Welcome to the KatRiders.com forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   KatRiders.com > Service Department > Wiring and Electrics

Wiring and Electrics Questions, answers and posts pertaining to electrical mods and problems

Reply
 
Thread Tools Display Modes
Old 07-31-2009, 12:35 PM   #1
Snow Kat
Skid Mark
 
Snow Kat's Avatar
 
Join Date: Mar 2009
Location: GWN Ontario
Posts: 3
iTrader: (0)

Default No Spark, ideas?

Hi I've got a 94 katana with no spark at the coils. The grounds are good. The resistance on the coils is good the resistance for the crank sensor is within range, the kill switch, and clutch switch both checked out. There's also power at the CDI box.

How do I check the CDI box? they're few & far between and usually expensive. I'd like to be sure before I buy one.

Thanks!
Snow Kat is offline   Reply With Quote
Old 07-31-2009, 02:46 PM   #2
squiggy
Kat Master
 
squiggy's Avatar
 
Join Date: Nov 2005
Location: Sacramento, CA
Posts: 3,273
iTrader: (3)

Default

Quote:
Originally Posted by Snow Kat View Post
The grounds are good.
What about the power side?

For CDI diagnosing you may very well need to take it to the dealer. I can't remember if Suzi's FSM has an area for troubleshooting the CDI.
squiggy is offline   Reply With Quote
Old 07-31-2009, 02:52 PM   #3
Snow Kat
Skid Mark
 
Snow Kat's Avatar
 
Join Date: Mar 2009
Location: GWN Ontario
Posts: 3
iTrader: (0)

Default

Quote:
Originally Posted by Snow Kat View Post
There's also power at the CDI box.

Thanks!
Suzuki can't test it, I've called.
Snow Kat is offline   Reply With Quote
Old 07-31-2009, 03:08 PM   #4
squiggy
Kat Master
 
squiggy's Avatar
 
Join Date: Nov 2005
Location: Sacramento, CA
Posts: 3,273
iTrader: (3)

Default

Check on the power side and let us know.

The CDI's are solid state electronics so they rarely go bad. I just saw in the for sale section someone selling a Pre CDI. I didn't look at the cost, though.

When I get home I see if the factory service manual says anything about the CDI box.
squiggy is offline   Reply With Quote
Old 07-31-2009, 03:22 PM   #5
Snow Kat
Skid Mark
 
Snow Kat's Avatar
 
Join Date: Mar 2009
Location: GWN Ontario
Posts: 3
iTrader: (0)

Default

thanks that would be really apprciated, the chilton manual is not that great.
Snow Kat is offline   Reply With Quote
Old 08-02-2009, 01:05 AM   #6
squiggy
Kat Master
 
squiggy's Avatar
 
Join Date: Nov 2005
Location: Sacramento, CA
Posts: 3,273
iTrader: (3)

Default

Here's some scan's I made of the Suzuki FSM. It is, however, for my 2001, but it will give you an idea as to what needs to be done to troubleshoot your issue.

The first is a troubleshooting flow chart. Since you've stated that your coils are fine then the last section would apply to you.

The next pic is an image of the ignitor, a.k.a. CDI, and it's associated inbound and outbound wires.


Lastly is the test procedure to isolate a faulty CDI from a faulty signal generator.


squiggy is offline   Reply With Quote
Old 08-02-2009, 02:14 AM   #7
DumbLuck
Ride in Peace
 
DumbLuck's Avatar
 
Join Date: Dec 2007
Location: southern mn
Posts: 2,315
iTrader: (0)
eBay ID: MrDawn1127

Default

about the only way to check a CDI is to test the coils for proper resistance first, and then pull a plug and check for spark. insure that your wiring is correct and all connectors in good shape and firmly seated. check to be sure there is proper voltage to the CDI and the safety features are working properly. pay special attention to grounds. there is special equipment to check CDIs, but not every dealer can afford it
__________________
99% of the questions asked here can be answered by a 2 minute search in the service manual. Get a service manual, USE IT.
1990 Suzuki GSX750F Katana
'53 Ford F250 pickumuptruck
Lookin for a new Enduro project
DumbLuck is offline   Reply With Quote
Old 08-02-2009, 02:08 PM   #8
squiggy
Kat Master
 
squiggy's Avatar
 
Join Date: Nov 2005
Location: Sacramento, CA
Posts: 3,273
iTrader: (3)

Default

The scans I posted above basically say the way to test the CDI is by eliminating everything else and if your still having issues then the CDI is faulty.
squiggy is offline   Reply With Quote
Old 08-10-2009, 07:56 PM   #9
coreo19
Poser
 
Join Date: Jun 2009
Location: kentucky
Posts: 81
iTrader: (3)

Default

dont know if this applys to a pre but on a post the key switch is what grounds the cdi box.
coreo19 is offline   Reply With Quote
Sponsored Links
Reply

  KatRiders.com > Service Department > Wiring and Electrics

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking for ideas here :-) Smokin Hot 89 Bodyshop 21 06-07-2009 12:30 PM
Any Ideas??? 1BADKAT Mechanics 101 10 05-17-2008 03:37 PM
low spark on spark plugs ICEG Mechanics 101 13 03-24-2008 10:44 PM
need some ideas pri_i_oh Suzuki Katana Talk 17 03-07-2008 05:22 PM
!!!HELP PLZ IM OUT OF IDEAS!!! air202stryker Mechanics 101 7 08-11-2006 03:41 PM



All times are GMT -5. The time now is 09:11 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Katriders.com, Copyright ©2004 - 2014
Katriders.com | Promote Your Page Too