SuzukiSavage.com - Stalling at 70 (NO SPARK

eanon

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Stalling at 70 (NO SPARK - RESOLVED)
06/03/09 at 17:18:42

A couple of mornings ago she started to stutter on the way to work, so I figured low gas, threw on the reserve, and rode the rest of the way no problem. Got to work, checked tank, plenty of gas. Huh. Two days later (this morning), while doing 70 on the highway, mind you, she starts to stutter again. Only this time I notice my tach, which is hooked up to the coil, is jumping 1000 rpm's (4K-5K) right before she stutters. Running fine, tach jumps, bike stutters. Any idea what would make the tach misread and make her stutter like that? I don't like sudden deceleration while in the fast lane. Shocked

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« Last Edit: 07/04/09 at 12:51:11 by eanon »

Red '97, cone filter, 150 main, 52.5 Pilot, half spacer, Screaming Eagle turnout, 17/43 chain drive, shield, de-badged, 4" forward control extensions. Gettin' there.

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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28637 Tucson Az Gender:	Re: Stalling at 70 Reply #1 - 06/03/09 at 17:28:24 Unplug and re-plug the connections to the kickstand and clutch lever safety cutouts. The contacts my be dirty. My clutch lever did that and caused a similar symptom...
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: Stalling at 70 Reply #2 - 06/03/09 at 18:40:05 And it wouldn't hurt to check the vac line
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Stimpy - FSO Serious Thumper Offline SuzukisSavage Int'l Division Posts: 1203 Germany - formerly SD, SoCal Gender:	Re: Stalling at 70 Reply #3 - 06/03/09 at 19:44:50 yup, verslagen is right on could be the vac line from your carb (try running w/ur valve in PRI, not ON) Could also be a lose cable (battery/spark plug)
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verslagen1

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Where there's a
will, I want to be
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Re: Stalling at 70
Reply #4 - 06/03/09 at 21:59:44

eanon wrote on 06/03/09 at 17:18:42:

... Only this time I notice my tach, which is hooked up to the coil, is jumping 1000 rpm's (4K-5K) right before she stutters. Running fine, tach jumps, bike stutters. Any idea what would make the tach misread and make her stutter like that?

I beleave the coil generates just enough voltage to do the job.
If there is an issue with firing sparky off, it will cause noise.
This noise will throw off the accuracy of the tach.
Running out of gas is one way to cause an issue.

So check the vac line for cracks or just replace.
use clamps on the ends, tie wrap or hose clamps.
check for fuel in the line while you're at it.

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eanon Full Member Offline Thump-Thump-Thu mp Posts: 219 Austin, Texas Gender:	Re: Stalling at 70 Reply #5 - 06/04/09 at 15:10:05 Thanks guys. I'll check it out this weekend and post results!
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Reelthing Serious Thumper Alliance Member Offline Fish or ride that is the question Posts: 5397 Houston,Tx Gender:	Re: Stalling at 70 Reply #6 - 06/04/09 at 15:34:52 Had an odd issue like this a little while after a tach install - I'll guess you used a twin tail blade connectors on the coil to splice in the tach wires - check those two blade connectors for a tight fit
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eanon

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Austin, Texas
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Re: Stalling at 70
Reply #7 - 07/02/09 at 19:20:26

I know I said I would reply within a couple days but I managed to sprain my ankle pretty bad that weekend, so I haven't had a chance to mess with her for a couple of weeks. Wasn't going to work, could barely get of the couch!

http://s170.photobucket.com/albums/u274/eanonhorton/?action=view&current=june...
http://s170.photobucket.com/albums/u274/eanonhorton/?action=view&current=june...

It felt a lot worse than it looks in the pics, I promise! Embarrassed

Anyway, I got to working on her a couple of days ago, and now have new problems... joy

I moved the battery to the left saddle bag. Had to make new cables. No problem. Got her put back together and she started right up. Very nice! gonna go for a quick ride around the block! It's been weeks since i've gotten to ride....

(Forgot to mention the battery was sitting on the ground next to the bike during the test run) Put the battery in the saddle bag, go to start up bike, click, click, nothing. Hmmm.

I can see the decomp cable moving. I've checked all the connections, everything is tight and clean. (In the process of test fitting, I actually broke a the negative terminal on my battery, so.... )Brand new battery. Also got a new spark plug and vac line.

I'm in the process of walking through the clymer's, (Resistance of the electrical connector from the signal generator reads 225 ohms), but i killed the battery looking/testing for loose/dirty connections. So while it's charging, any body got any ideas?

(I know this has been covered before, but i searched for 30 minutes, then went page by page, till I hit page 45....
Plus, once I get her running, I can try to fix to stalling issue! Roll Eyes

)

Thanks in advance

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Red '97, cone filter, 150 main, 52.5 Pilot, half spacer, Screaming Eagle turnout, 17/43 chain drive, shield, de-badged, 4" forward control extensions. Gettin' there.

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T Mack 1 - FSO Serious Thumper Alliance Member Offline sold 2001 LS650 for a 1986 XLH1100 Posts: 2919 Emmaus,Pa Gender:	Re: Stalling at 70 Reply #8 - 07/03/09 at 08:32:51 My tach jumped a bit till found that the connection was loose. How did you connect the tach??? T Mack
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eanon

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Re: Stalling at 70
Reply #9 - 07/03/09 at 10:08:17

to the coil. just checked, coil is good, decomp is good, signal generator is good. still, no spark, as far as i can tell. i tried testing it by touching the base of the plug to the cylinder wall then trying to start the engine, like clymers suggests, but no spark. i guess i'm on to the ignition unit. think i just saw a post about checking that out, which will be handy, since yeah, clymers says "take it to the stealership".

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Red '97, cone filter, 150 main, 52.5 Pilot, half spacer, Screaming Eagle turnout, 17/43 chain drive, shield, de-badged, 4" forward control extensions. Gettin' there.

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eanon Full Member Offline Thump-Thump-Thu mp Posts: 219 Austin, Texas Gender:	Re: Stalling at 70 Reply #10 - 07/03/09 at 10:12:25 nope. that was a post about the voltage regulator. anybody know how to test the ignition unit?
Back to top	Red '97, cone filter, 150 main, 52.5 Pilot, half spacer, Screaming Eagle turnout, 17/43 chain drive, shield, de-badged, 4" forward control extensions. Gettin' there. IP Logged

eanon

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Thump-Thump-Thu mp

Posts: 219
Austin, Texas
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Re: Stalling at 70
Reply #11 - 07/03/09 at 11:29:25

turns out my hot wire going into the starter relay had come un-soldered. Can't remember who posted that they had the same problem when their starter relay wasn't hooked up correctly, but thanks. she's turning over now. still not starting, but turning over. she always hard to start after not being ridden for a while, so i'm gonna give her a few minutes, charge my battery some more, and try again. wish me luck!

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Red '97, cone filter, 150 main, 52.5 Pilot, half spacer, Screaming Eagle turnout, 17/43 chain drive, shield, de-badged, 4" forward control extensions. Gettin' there.

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ineclipse Junior Member Offline SuzukiSavage.com Rocks! Posts: 51	Re: Stalling at 70 Reply #12 - 07/03/09 at 16:09:11 Good luck! Know how it feels to waltz around knowing for certain I've got my problems straight, taking moments to relax and enjoy my brilliant mechanical mind... when I return to find only the opposite. You do sound like you found a major issue, however. Like I said, my wishes are with you, good luck! -Luke.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Stalling at 70 Reply #13 - 07/04/09 at 08:27:07 Good find. Just close visual inspection?
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eanon Full Member Offline Thump-Thump-Thu mp Posts: 219 Austin, Texas Gender:	Re: Stalling at 70 Reply #14 - 07/04/09 at 08:40:57 yeah. just tracing wires, checking connections. still no spark though. I used AWG 8 to remake the battery cables. on further research, I find out awg 8 is only rated to 24 amps. Could that be my problem? What is the cranking amps needed to achieve spark?
Back to top	Red '97, cone filter, 150 main, 52.5 Pilot, half spacer, Screaming Eagle turnout, 17/43 chain drive, shield, de-badged, 4" forward control extensions. Gettin' there. IP Logged