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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Engine stalls or stops /cgi-bin/YaBB.pl?num=1439000287 Message started by Albert Verdugo on 08/07/15 at 19:18:07 |
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Title: Engine stalls or stops Post by Albert Verdugo on 08/07/15 at 19:18:07 Since I bought my S40, I have had problem with my engine. whenever I push hard the throttle and then release it, the engine stalls or even stops. I replaced the petcock with the raptors and it was better but stills tend to stall. this is a video showing the problem https://www.dropbox.com/photos/shared_space/mrn13DhK8zgfJRz I hope Someone knows how to fix this> Thank you very much! |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/07/15 at 19:32:33 Usually, if everything is okay, that is just a low idle problem. It's Gotta have 1,000 RPM just to keep oil on the cam. |
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Title: Re: Engine stalls or stops Post by verslagen1 on 08/07/15 at 19:36:12 5A78716C787A190 wrote:
don't do that... there fixed it for you. :-? |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/07/15 at 19:41:19 yes, that, too. Control the throttle, and be sure the idle RPM is right. |
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Title: Re: Engine stalls or stops Post by KennyG on 08/07/15 at 19:41:56 Albert, When my S40 did what your bike is doing the idle speed was a little low as Justin stated, and the pilot jet needed to be cleaned. Lancer had me adjust the idle jet screw out until the RPM was as high as it would go with that adjustment. And as Verslagen said "Don't Do That", meaning don't turn the throttle back so quickly. Kenny G |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/07/15 at 19:56:34 Carburetor is clean, I just checked It happens wile riding, when I just release the throttle. The engine stalls almost like if a person stutters or even shut down. I don't know if idle rpm is correct, but I have noticed the weather affects a lot the idle, in the morning 7am idle is faster, but at 2pm (desert summer) is very low. |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/07/15 at 20:23:15 Ill be blunt, the engine won't survive low idle. There are videos that have what it sounds like. I SHOULD be more help here, I don't know the search function, I apologize. A bit high beats low. I adjusted mine as the thing warmed up. It's okay to tweak it , I can ride and adjust, no lean, no look, no tools.. just gloves, |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/07/15 at 23:56:16 Me too, adjusting the throttle as needed. Great Idea, check the sound in a video. TNX! |
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Title: Re: Engine stalls or stops Post by thumperclone on 08/08/15 at 00:05:36 main jet |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/08/15 at 00:10:19 Main jet, I had read about changing the main jet, but haven't decided yet. My S40 has a Jardine custom pipe. Do you recommend changing the main jet? |
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Title: Re: Engine stalls or stops Post by Oldfeller on 08/08/15 at 03:24:34 Albert, All Savages will all do that in stock format. Our carburetor is a vacuum actuated slide unit that always LAGS BEHIND any form of rapid throttle movement. Remember, the stock bike is tuned for maximum EPA gas mileage and your little thingie is a natural extension of that sort of thing. When you are riding the bike and do what you are doing, sometime you can get a backfire and you quickly learn not to do that sort of senseless rapid up and down movement with the throttle. Smooth movement works best with a CV type carburetor. Some of the mods we do can help somewhat with the issue, but do not make it go away totally. ==================== Dear Moderators, doesn't this really belong in Rubber Side Down where the fix it answer people tend to be? He's getting a lot of guesses from the Cafe crowd that aren't going to take him to a conclusion. |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/08/15 at 03:38:24 I've never stood next to a Jardine, but, I've heard they're loud and I know they make carb tuning more challenging. The Dyna is a good exhaust if you get tired of messing. |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/08/15 at 16:37:55 Oldfeller, You are right, I previously owned 2 150cc bikes, and got used to them, I just have a year with this one and love it, but as you said, i can avoid the backfire moderating the throttle. and Justin o guy2, I follow your advice and match the rev sound according to various savage an S40 videos, great tip, the engine is responding better. bwt When I bought the bike it came with the Jardine, Its cool at first but 112 decibels it is not cool after a 30min ride. I am looking for a stock pipe but have not found one. Tnx all for your time. 8-) hope next pics are to show you my mods! |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/08/15 at 17:51:12 Dyna muffler. Lighter,sounds good, looks good, cheap,, easy enough to get. MUCH easier to jet the carb. |
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Title: Re: Engine stalls or stops Post by Boogie_with_Stu on 08/08/15 at 18:31:01 081711160B0C3D0D3D05171B50620 wrote:
^^^ what he said. The Dyna not only LOOKs great, it SOUNDS very nice and is a fairly easy "slip on" install. Check this thread for the proper part number and then go on eBay and find a used one (Harley guys take off new/almost new Dyna mufflers and replace them with aftermarket exhaust...so there are always "gently used" units available). Dyna muffler thread. http://suzukisavage.com/cgi-bin/YaBB.pl?num=1298689417 |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/08/15 at 19:25:09 If it's in good shape you might put it on the For Sale part of the forum. Some guys want the Jardine, couldn't give me one. |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/08/15 at 19:46:24 It is in good shape, I just repacked it. |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/08/15 at 20:56:04 Eyeballs,,, |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/09/15 at 00:45:41 I dont want to sellit but I think i need to add a silencer http://https://scontent-lax1-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/p180x540/10923509_10205271390037792_4489357241669716412_n.jpg?oh=afc12c418627ae0003e4d70d97953f41&oe=5654165F http://https://scontent-lax1-1.xx.fbcdn.net/hphotos-xat1/v/t1.0-9/p180x540/11015848_10205271390597806_7496053011095263612_n.jpg?oh=480c28dd66c98712c6bda9a1eb368fdf&oe=564347B6 http://https://scontent-lax1-1.xx.fbcdn.net/hphotos-xat1/v/t1.0-9/p180x540/11168004_10205558782942435_4969761489857825709_n.jpg?oh=06a2495c44f10642b163da4ae92e8c84&oe=5653CDCC |
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Title: Re: Engine stalls or stops Post by chzeckmate on 08/09/15 at 00:57:03 Here's a video I made showing the S40 idling at 1050 RPM. This is the lowest I'd recommend setting your idle. Listen to the rhythm and set your idle at least this fast or higher up to around 1200 RPM is fine. https://www.youtube.com/watch?v=91njcw1U404 |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/09/15 at 01:09:10 546B6D6A7770581E0 wrote:
Thanks! |
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Title: Re: Engine stalls or stops Post by gizzo on 08/09/15 at 01:20:18 If the second pic is of the baffle in the Jardine, you could easily modify that to make it quieter. Saw it in half, block the cut with some steel, reassemble. Maybe sleeve the join with some exhaust tube. The exhaust has to go in, up, around, back in and out. That'll make a noticable difference than just going straight through. If you can be bothered. Putting a Dyna on would be a lot easier. |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/09/15 at 12:39:13 Yes Gizzo, the second pic is from the baffle. I looks like some DIY work, but right now it is a better option than a Dyna (money). or maybe not. I have not made a search for the pipe |
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Title: Re: Engine stalls or stops Post by Dave on 08/10/15 at 04:31:49 1F3D34293D3F5C0 wrote:
Placing a "plug" in the center of that baffle will go a long way toward making it a functional muffler. Right now the sound just moves straight on through with little change in sound. If you want to experiment and can live without the baffle for a couple weeks (6 days shipping each way)....mail it to me and I will weld a plug in the center for you. You don't need to cut the baffle in half - you can insert a round plug from either end and just weld it in place through a few small holes drilled into the baffle - or you can use a grinding wheel and cut a slot halfway through the side and insert a round piece of metal and weld it in place. You could try placing some of the glass matt around the baffle....but it really won't help much as the holes are angled in a way that allows the pressure pulses to pass right on by. The glass matt takes away some of the higher pitched tones and will make the sound a bit deeper....but not any less loud. And the glass matt burns way pretty quickly. |
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Title: Re: Engine stalls or stops Post by Tony from tdot on 08/10/15 at 17:08:42 I too have this problem with stalling. Many, many times, ill be cruising down the highway, and if for some reason I need to quickly slow down, I pull in the clutch and there she goes. Dies in the middle of the highway going 100kmh. Has no problem starting again, but its a big PIA! My idle is also about 1200, so WHAT GIVES? |
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Title: Re: Engine stalls or stops Post by Boogie_with_Stu on 08/10/15 at 18:10:11 263423343230332730343E6C67550 wrote:
Tony, we need just a tad more info. What year bike? What mods (if any) have you done to it? When did the problem start? Was it something that started suddenly, or grew worse over time? Do you have a Raptor replacement petcock installed? These guys are truly geniuses when it comes to Savages, but they cant read you mind ;D |
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Title: Re: Engine stalls or stops Post by philip garnsey on 08/12/15 at 16:52:57 oh hi everybody I am new to this sight but anyway here goes I have just fitted a german silencer to my ls 650 and omg she is now so quiet I can hear alsorts of noises I didn't hear before I seem to have more horse power aswell but if I try and push her and shut throttle to quick yeah she stalls many of you are saying idle should not be low even though it sounds cool but I think I agree before I changed silencer she sounded like three Harleys it was not fair on my neigboures even the ones I don't like. [smiley=thumbsup.gif] now wow what a difference |
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Title: Re: Engine stalls or stops Post by Dave on 08/12/15 at 19:09:10 When you close the throttle in a hurry.....you create a really high vacuum in the intake port, and it pulls more air past the carb butterfly than the engine normally does at the normal idle speed. However......the slide is all the way down and has closed off the main and needle jets, and the only fuel that is flowing to the intake is from the idle circuit. The result is that the fuel/air mixture has gone incredibly lean - and it is so lean the spark plug can't ignite the mixture and the engine stalls. When you go to restart the bike the high vacuum is gone, and the idle circuit can provide enough fuel....and the engine starts right up. The engine doesn't like to have the throttle closed too quickly while riding, or even while shifting gears......the backfire while shifting is a result of the same "lean mixture" condition. If you can avoid slamming the throttle completely closed while shifting and just leave it about 1/8th open...the backfire will go away and the engine will not stall. It is hard (impossible) to do that in a panic stop situation and if you grab the brake and pull in the clutch instantly.....the bike will most likely stall, and that unfortunately is a problem in owning a big single. The carb does have a TEV (Throttle Enrichment Valve) that is supposed to provide a bit of additional fuel when those high vacuum conditions exist, and for some reason it just isn't enough in some bikes. Maybe the jets are dirty in the TEV, maybe the TEV is not really calibrated for E10 fuel with ethanol in it, and maybe your idle mixture is just slightly lean. You might try opening your idle mixture screw a 1/4 turn and see if that helps. |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/12/15 at 19:21:02 slamming the gas off , shifting, nailing it, no clutch, no time for backfires.. |
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Title: Re: Engine stalls or stops Post by Dave on 08/13/15 at 04:22:05 382721263B3C0D3D0D35272B60520 wrote:
I have tried the No-Clutch shift on my bike a couple of times, and it just doesn't work for me on the Savage. I have owned other bikes where it worked well and could be done smoothly - but not on the Savage....not for me. Maybe it is because of the Wiseco piston having more compression braking, or the Mikuni round slide, or the big flywheel/crankshaft mass - but there is always a big clunk between shifts when I try and I know the belt and rear hub cushions are taking a big hit when I try. So for me I always use the clutch between shifts, and I never slam the throttle closed while shifting.....I just roll the throttle off a little bit when the clutch is pulled in and roll it back on when the clutch is let out. http://i58.tinypic.com/ogau7b.jpg |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/22/15 at 20:14:14 When I do the non-clutch shift in the first gears i loose the throttle, make the shift but do not rev again. It feels more natural. But in 4th and 5th the shift is smooth like in any other bike |
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Title: Re: Engine stalls or stops Post by justin_o_guy2 on 08/22/15 at 21:22:36 Then mean old men like me would leave you looking at tail lights,, |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 08/22/15 at 21:45:40 It's ok, it is not a race, lets just race for the fun! |
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Title: Re: Engine stalls or stops Post by luckylouie82 on 09/03/15 at 13:45:27 The OPs symptom is the same as in my 2011 with 2000 miles. Raptor petcock, clean carb Idle on aftermarket tach is set at 1300 when warm. Maybe I'm dense, but with everybody recommending behavior mods, i.e. not slapping throttle shut etc. Can I assume that this is just a characteristic of the machine and all the commenters have the same "symptom" in their bikes? Also: It seems to me that when I richen the idle screw the dip in rpm and stalling increases. Why would that be if the stall/dip is the result of a lean mixture? |
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Title: Re: Engine stalls or stops Post by Albert Verdugo on 09/17/15 at 02:58:38 I do not know lickyloui82. Also something I have noticed since last winter is how much the weather temperature affects the engine. I live in the dessert and the weather is just starting to cool off, and the engine is responding better, it sounds better and smoother. I love this cold weather, because is more fun to ride when you are not burning in hell every light |
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