SuzukiSavage.com /cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH /cgi-bin/YaBB.pl?num=1423683645 Message started by woo_savage on 02/11/15 at 11:40:45

Title: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/11/15 at 11:40:45 I rode to work just fine... came out after an day at work.  :'( Now I'm on the side of the road. It won't keep running as soon as i let go of the clutch. Any ideas? :'(

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by Art Webb on 02/11/15 at 12:31:43 Kick stand up? there's a kill switch connected to the kickstand, and the engine will not run in gear if the stand isn't all the way up, or the switch is bad

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by Dave on 02/11/15 at 12:36:47 Well....since I have not had the side stand safety on my bike for a while...I forget exactly how it works.  I believe the side stand safety kills the engine if it sees that the neutral light goes out (you put it in gear)...while the sidestand is still down.  There is a safety switch that often goes bad at the sidestand...you can short circuit the connector that is located on the left side of the frame, near the battery box, behind the left side frame cover.  I don't believe it is connected to the clutch safety switch however - but to the neutral light. I believe the clutch safety switch is tied to the starter circuit - and won't let you engage the electric starter when the bike is in gear...unless you first pull in the clutch.  "IF" you do find that the engine dies when you let out the clutch - you might be able to get home by taking the wires off the clutch switch at the handlebars, and putting a piece of wire or paper clip between the terminals...being careful not to let the wire touch the grounded handlebars (tape up any exposed wire or paper clip).

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by verslagen1 on 02/11/15 at 13:10:19 right dave, kickstand is tied to the neutral safety.   put it in gear with the ks down and it'll die. clutch safety only allows the starter to operate. If it dies everytime you let out the clutch, and it's not because of a too low a throttle adjustment or a bad clutch adjustment, then it's electrical.  bypass the safety and limp home for further investigation.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/11/15 at 19:33:53 So after sitting for about an hour, I had my dad show up with his pick up truck to drag me home. I fired it up for him to hear... It started. I gave it a handful of throttle and it POPPED and SPUTTERED and backfired and then idled with the clutch released. My dad thought that maybe there was water in the carb... You guys think that could be? It was very low on oil and I threw a quart in just to be sure... So i have it home now. I will tear into it tomorrow after work. I hope its nothing too serious... :-[ Any and all advice welcomed, you guys are the real experts.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by justin_o_guy2 on 02/11/15 at 22:22:09 Drain the gas, empty the carb bowl, catch the gas in a clear cup from the carb. Study it, put a little on a rag see how it burns. Check the oil level. If the gas swap does not work, check the petcock.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/15/15 at 14:18:49 So here is an update. I checked for spark by pulling out the spark plug and sitting it on the engine block while it cranked... I got spark. I took the carb off and opened it up and cleaned it well... It runs. It idles without holding the clutch in. It does die when I rock it side to side. But its doing more than itwas 2 days ago... got the petcock on prime right now but it was running in just the on position. Thinking about draining the tank and taking out the petcock and maybe cleaning it a bit with some carb cleaner to make sure there isnt any dirt or grime blocking it... What do you guys think?

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by old_rider on 02/15/15 at 15:15:56 Think you need to find where that stand switch connector is... If I recall there have been times when the one under the tank works its way loose and causes the problem you are having. Might want to do the "whole" petcock check in the tech section, just to be sure and rule it out of the picture. Check the stand switch though.... at the stand, and follow the wires to make sure there is no short.... I hope one of the fellas can tell you which plug under the tank to check.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/16/15 at 15:57:31 Latest update: Runs. In neutral I can give it all the throttle I want and it sounds fine. I will run as ling as I let it. I kick it in gear and try to ride off, it dies. Any ideas?

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/16/15 at 16:02:17 Latest update: Runs. In neutral I can give it all the throttle I want and it sounds fine. I will run as ling as I let it. I kick it in gear and try to ride off, it dies. Any ideas?

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by Dave on 02/16/15 at 16:09:10 Does it die just as soon is it goes into gear....while your hand is still holding the clutch all the way to the handlebar? Have you been ignoring the advice about checking or bypassing the kick stand safety switch?  If the switch is faulty and is telling the bike that the kickstand is still down - it will kill the engine so that you don't ride off with the kickstand down.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/16/15 at 16:14:37 It doesn't die as soon as it goes into gear. And it doesn't die as soon as I let out the clutch either. But as soon as I give it some throttle, it cuts out and then it wont start right back up...

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by Kris01 on 02/16/15 at 17:35:48 So will the bike move under it's own power without opening the throttle?

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/16/15 at 17:52:52 Yes it does, just not far. Got maybe half a block...

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by Dave on 02/17/15 at 04:38:36 You may have a fuel flow problem to the float bowl (did you install an inline fuel filter?). Or maybe the petcock is just not flowing enough fuel.  Have you ever tried to see how quickly fuel will flow out of the petcock or out of the float bowl drain? If you have a carb with a drain screw on the bottom of the float bowl, you can attach a clear hose to the bottom of the carb and see where the fuel level is.  If you can connect a hose securely so it won't fall off and run gas everywhere, you might try riding it with the hose attached so you can see where the fuel level is when the bike dies.  If the bike dies and the fuel level is very low and then slowly rises once the bike is stopped...then it is a fuel flow issue. Have you ever removed the float valve seat and cleaned the small filter that is on top of the brass seat fitting? Your fuel level should look like this:

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/17/15 at 05:13:48 I will try that next. I did have the carb off and opened up the fliat bowl. Sprayed/cleaned everything with carb cleaner, but didn't take the floats off. I will try that nest and look for the little filter.  Adding an inline fuel filter is next on my list. Thanks.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by Dave on 02/17/15 at 05:29:57 5E4C5B4C4A481B142D0 wrote:  Adding an inline fuel filter is next on my list. Thanks. Adding inline filters can make the fuel flow worse - the filters can cause air bubbles in the system that block the flow of fuel.  Unless you have a problem with rust or dirt in the tank....I would not add one.  The petcock has a fuel filter screen built into it...and the carb also has a filter above the seat for the float needle.  Adding a 3rd filter is not really necessary in my opinion. And yes...it is definitely time for you to take the carb off and give it a good cleaning.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by justin_o_guy2 on 02/17/15 at 07:06:27 Would not make any mods till it's running. All the starting and not riding IS gonna drain the battery and it'll turn over but not fire up. The inline filter can be a problem, the petcock has a screen, the bike runs for decades without an added filter

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/17/15 at 07:08:36 I have a float charger on the battery right now. Charge it between looking at it.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by justin_o_guy2 on 02/17/15 at 07:20:28 Good plan, you'll need a volt/ohm meter for checking stuff,anyway. HF has good enough,cheap. I'd get it in neutral and roll it.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by Serowbot on 02/17/15 at 07:41:05 Have you drained and replaced the fuel yet?,... as JOG asked 10 posts ago?... :-/... You are not giving us accurate information... first, it was shutting off as soon as you release the clutch,... then, idles fine, but won't accelerate... Don't add a fuel filter... it's one more thing to go wrong...

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 02/17/15 at 18:24:55 Serowbot, I haven't drainednthe tank yet. I have drained the carb twice and all seems clear and good. When I get wome time, I will drain the fuel and and add fresh fuel... next step im going to take is to take the carb off take the floats off and check the filter behind it. I will keep you posted on the progress. Thank you all for the advise.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by TheNewBee1 on 02/24/15 at 00:33:08 Sounds like something is blocking the air from entering the filter. I've had the same problem and removing the seat revealed some electrical wires were blocking the entrance to my air filter. It choked everytime I let go of the clutch.

Title: Re: HELP!!! S40 DIES AS SOON AS I LET GO OF CLUTCH Post by woo_savage on 03/08/15 at 20:25:38 So the problem may have been solved.... I had a issue with my coil wire breaking or being cut months ago. I ordered a new used one and was replacing it today.  What I notices is that one of the leads was broken.  I made a better connection and crimped the wire down tight, added a bit of conductive addhesive anD installed the new coil. It fired up fine. Took it out for a ride with zero problem!!!! I'm going to ride it to work tomorrow. Give you guys an update after I do... Keep you fingers crossed!

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