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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Thumper Problems.......... /cgi-bin/YaBB.pl?num=1237504431 Message started by Rion on 03/19/09 at 16:13:51 |
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Title: Thumper Problems.......... Post by Rion on 03/19/09 at 16:13:51 The other day I started my bike to head to work and I noticed darker(sorry I am partially color blind :-/) puffs of smoke coming from the exhaust, and the idle was uneven. Today I went to start it up again and now it dies while trying to idle. I took apart the carb and cleaned it up about 2 months ago and it ran great til now. Would a problem just now be starting to arise? Any help would be appreciated :) |
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Title: Re: Thumper Problems.......... Post by diamond jim on 03/19/09 at 16:38:41 Sounds like the carb has some junk in it again. Pull it out and clean it again. There's a chance a vacuum line is acting up as well. |
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Title: Re: Thumper Problems.......... Post by Savage Eddie on 03/19/09 at 16:45:57 try adding seafoam, less involved fix.... (available in the local parts store) maybe you got a tank of bad gas? does the oil smell like gas? does it start easy or crank alot? i noticed this problem when my float stuck and filled my carb then drained into my crankcase....what a mess. |
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Title: Re: Thumper Problems.......... Post by diamond jim on 03/19/09 at 16:55:53 Apparently I got a little gas in my oil. I think it was after I changed the main out. First sign was I noticed my clutch acting like I needed to adjust the cable play a little. Changed the oil earlier today. Smelled a little bit of gas in it. |
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Title: Re: Thumper Problems.......... Post by Savage Eddie on 03/19/09 at 17:19:30 i know im using the wrong post for this but how long did it take to get the clutch back to normal? |
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Title: Re: Thumper Problems.......... Post by Rion on 03/19/09 at 17:21:54 i read somewhere that because of the darker smoke it might be running to rich? The oil does smell a little like gas but it might be placebo ;) too. It usually turned over fine when cold but after stopping and restarting it would crank alot. Now it cranks alot and then dies while idling. |
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Title: Re: Thumper Problems.......... Post by Rion on 03/19/09 at 17:23:10 Using seafome, would I need to drain the tank and put new gas in it or will it take care of the bad gas that is possibly in it now? |
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Title: Re: Thumper Problems.......... Post by Rion on 03/19/09 at 17:24:59 I also noticed a grinding sound when changing gears down and a thunk sound when gearing up, is this just a clutch adjustment? |
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Title: Re: Thumper Problems.......... Post by Savage Eddie on 03/19/09 at 17:34:14 i think ill let the experts answer this one but it does sound as if the engine is flooded. my bike did almost the exact same thing when it flooded. im having my carb rebuilt cause my first attempt didnt work. ive been told this is a "wet clutch" and saturating the oil with fuel also causes clutch issues. |
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Title: Re: Thumper Problems.......... Post by Mortation on 03/19/09 at 18:05:53 How dark was that smoke? Did you check and make sure the cylinder still has compression? |
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Title: Re: Thumper Problems.......... Post by T Mack 1 on 03/19/09 at 18:58:45 Ok... this may sound too simple but try it first. Tweak the idle up a knotch then report back. It's a freebie and always do the freebies first. |
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Title: Re: Thumper Problems.......... Post by diamond jim on 03/19/09 at 19:05:01 29282825294C0 wrote:
I was running dino guts. Put in synthetic 10W-40. It took about 5 miles of downtown, stoplight traffic for the clutch to feel really smooth again. |
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Title: Re: Thumper Problems.......... Post by Rion on 03/19/09 at 19:43:29 I tried turning up the idle but it hesitated while accelerating. Since there are only small puffs it is hard to judge but seemed dark gray or even black. And I don't think I have any of the proper too;s to test the compression at this time. |
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Title: Re: Thumper Problems.......... Post by ero4444 on 03/20/09 at 13:07:12 have you ever cleaned or replaced the air filter? |
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Title: Re: Thumper Problems.......... Post by Rion on 03/20/09 at 14:18:35 i replaced the air filter |
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Title: Re: Thumper Problems.......... Post by serowbot on 03/20/09 at 17:12:57 black smoke, is too much gas... blue/gray, is burning oil.... white, is water/condensation in the exhaust... check the petcock vac line for gas,...should be absolutely none.... check the carb float,...may be sticking.... |
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Title: Re: Thumper Problems.......... Post by Rion on 03/25/09 at 14:51:15 I am still having problems with my bike. It is still idling uneven and puffing out small amounts of darker smoke. I checked the spark plug and it was "carbon fouled" so I replaced it and that helped the idle (for a day), but now it is uneven again. I checked the spark plug chart and it says "carbon fouled" plugs are due to being too rich, so I was wondering how to resolve this problem. Any help would be appreciated as it is too nice here Cali to NOT be riding! :( |
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Title: Re: Thumper Problems.......... Post by Rion on 03/25/09 at 14:54:13 Is there a way to check the float without taking the carb off AGAIN? I took it off the other day and it still looked very clean from the time I cleaned it. |
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Title: Re: Thumper Problems.......... Post by cowspotter on 03/25/09 at 16:19:45 Have you checked the vacuum line coming off the petcock? The petcock could be bad, sending gas into the vacuum line causing the engine to run rich. |
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Title: Re: Thumper Problems.......... Post by Rion on 03/25/09 at 17:05:28 yes, i have checked the vacuum hose and it is dry. |
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Title: Re: Thumper Problems.......... Post by verslagen1 on 03/25/09 at 18:08:24 Does your carb have a drain teet? put a clear line on and hold it up next to the carb. open the drain on the bowl. and set the petcock to prime. gas should come up in the line even with the bowl gasket. |
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Title: Re: Thumper Problems.......... Post by Rion on 03/26/09 at 14:00:36 what does it mean when the fuel isn't at the same level as the float? |
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Title: Re: Thumper Problems.......... Post by verslagen1 on 03/26/09 at 14:06:26 672623213C372630273A3C3D20530 wrote:
You got a leaky float or your float has sunk or is stuck. does the fuel shut off? Then it floats. Is the fuel level low? readjust the the tab for the shut-off. |
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Title: Re: Thumper Problems.......... Post by Digger on 03/26/09 at 21:07:36 Rion, Here is a good test of your petcock: Crimp the petcock line completely shut. I mean completely. Run the bike with the petcock set on PRI. If your problem clears up, then that points to a bad petcock diaphragm. Good luck! |
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Title: Re: Thumper Problems.......... Post by Rion on 03/27/09 at 15:46:45 Well I have tried the Petcock idea and there was no improvement. I also put a clear tube on the drain hole and the fuel level comes even with the top of the float bowl. :-/ Not sure what else to do, Please if anyone can help, I need it!!! It's GORGEOUS outside!!!!! |
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Title: Re: Thumper Problems.......... Post by diamond jim on 03/27/09 at 16:23:21 Let's see: Running rich with hesitation during acceleration Petcock- good Floats- good Air- good Spark- good I'm assuming nothing clogged up the tail pipe. So that just leaves dirty carb (again) and something seriously wrong with the engine. Hmmm... so why did you have to clean the carb 2 months ago? My money is on a carb problem. likely a dirty pilot air jet. Other possibilities are worn main jet,/needle or slide vacuum hole plugged (rare) not functioning properly creating excess vacuum and pulling the slide up too early. I don't think you've mentioned any carbs mods done. Have you done any? |
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Title: Re: Thumper Problems.......... Post by Rion on 03/27/09 at 18:30:31 I don't know but it appears that the white spacer is thinner than stock. spark plugs are carbon fouled I cleaned the carb last time due to running out of gas and not being able to start it afterwards. I checked the carb a few days ago and it looks very clean |
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Title: Re: Thumper Problems.......... Post by verslagen1 on 03/27/09 at 19:50:36 4C41494547464C424145280 wrote:
Hesitation as in twist the wick and nothin' happens for a while? Sticking slide. |
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Title: Re: Thumper Problems.......... Post by diamond jim on 03/27/09 at 20:08:22 564552534C4147454E11200 wrote:
Hesitation as in twist the wick and nothin' happens for a while? Sticking slide.[/quote] Sounds similar to oldfeller's description: "I have mentioned some "wonky" running characteristics from getting Mazola oil transferred from your oil laden dust trapping air cleaner to your constant velocity vacuum actuated carburetor slide. When this happens you get slower response to throttle off changes and generally rich running condition as your slide movement is always responding slowly and is always behind the power curve so to speak." |
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Title: Re: Thumper Problems.......... Post by verslagen1 on 03/27/09 at 20:23:20 565B535F5D5C56585B5F320 wrote:
Hesitation as in twist the wick and nothin' happens for a while? Sticking slide.[/quote] Sounds similar to oldfeller's description: "I have mentioned some "wonky" running characteristics from getting Mazola oil transferred from your oil laden dust trapping air cleaner to your constant velocity vacuum actuated carburetor slide. When this happens you get slower response to throttle off changes and generally rich running condition as your slide movement is always responding slowly and is always behind the power curve so to speak."[/quote] My experience comes from good ol' natural creationist dirt. His dirt is artificial, un-natural, darwin type dirt. I wouldn't trust it. |
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Title: Re: Thumper Problems.......... Post by Rion on 03/28/09 at 03:17:40 The hesitation is an uneven idle (e.g. dip in RPMs every few seconds) |
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Title: Re: Thumper Problems.......... Post by diamond jim on 03/28/09 at 06:47:37 Have you changed jets, spacer or done the mixture screw mod? How many turn out is it right now? |
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Title: Re: Thumper Problems.......... Post by Rion on 03/28/09 at 13:10:12 The carb is stock as far as i know but I think the white spacer looks skinnier than it should be. I turned out the mixture screw 2 turns |
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Title: Re: Thumper Problems.......... Post by Rion on 03/28/09 at 16:17:50 Just took the bike out today and it ran fine until it got warm and then when i came to a light it died on me. I turned up the throttle and got it home but the fluctuating RPMs (the stutter) was still there and a little worse. I am pretty Sure I need to change the spark plug again as it is probably fouled again but I could really use some help on this. THANKS ALOT for everyones help ;) |
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Title: Re: Thumper Problems.......... Post by Rion on 03/28/09 at 17:14:09 Just wondering if it possible that the "spark plug coil" (or whatever it is called) went bad and is making the spark plug not fire enough. Which might mean not enough fuel is getting burned off and is causing the bike to run rich and leave behind deposits of carbon on the plug? |
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Title: Re: Thumper Problems.......... Post by ThumpMyster on 03/28/09 at 17:22:10 I am wondering if bad gas might be the problem. Did you try draining it out and putting some fresh gas in? Just a thought. Otherwise I would check compression, and check for air leaks around the carb. Is it sealing tight on the boot? Do you have a pinched vacuum or carb vent hose, maybe? |
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Title: Re: Thumper Problems.......... Post by Rion on 03/28/09 at 18:17:38 carb seems tight and I have emptied the gas and put fresh gas in with seafoam added |
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Title: Re: Thumper Problems.......... Post by Sandy Koocanusa on 03/29/09 at 15:25:14 Something nobody has mentioned... Did the weather warm up significantly or turn very rainy or humid right about the time your troubles began? My mix is veeeeery weather dependent. When the hot weather hits, I'm always fiddling with the adjustment screw. Cool mornings and hot afternoons make for a lot of changes. |
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Title: Re: Thumper Problems.......... Post by Rion on 04/02/09 at 17:46:43 I just got done putting on a new ignition coil with no success in performance. The bike is still idling rough and small puffs of black smoke from the exhaust. I really need some help on this one. Thanks for any suggestions |
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