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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Bike Revs, then Dies /cgi-bin/YaBB.pl?num=1263466043 Message started by ArielT on 01/14/10 at 02:47:22 |
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Title: Bike Revs, then Dies Post by ArielT on 01/14/10 at 02:47:22 Sorry, there's sort of an overview of prior history and I wouldn't mind commentary on it, but there's a tl;dr with my question at the end. Well, I got 1998 Suzuki Savage that's been sitting for about eight months outside, and probably more prior. Finally got around to draining the gas tank, cleaning out the carb and replacing the dead battery with a Big Crank. As an aside, the Big Cranks have terminals that face perpendicular instead of parallel to the bike body, making the experience of installation a little annoying, particularly on the negative side. Somewhat worried that the connection between the terminal and lead isn't enough with the screw or that it will contact with the body of the battery box, but it honestly seems pretty okay. Anyway, so I dumped two gallons of fresh gas in the bike and test it out. I hadn't set the idle screw correctly earlier, but I was impatient wanted to ride it a bit. It started fine, drove it a bit, though with the idle not in place, it kept dying at any stop. Once I got about half a mile away from my house, I try to fiddle with the idle a bit, realize I can't really seem to get a grip on it. When I start the bike up again, it revs and then I get a loud pop noise from what felt and sounded like right below me, but the helmet I had on may have distorted things. I immediately released the throttle and let it shut off again. Next time I tried to start it up, it would turn over, rev up and then die on me. My guess is it's something to do with the carb or the air intake, but I don't know what exactly to check for. Any suggestions? tl;dr When I try to start my bike it turns over, revs high and then dies. What the devil is wrong? |
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Title: Re: Bike Revs, then Dies Post by serenity3743 on 01/14/10 at 05:13:49 With the bike having been "stored" outside for a long period of time, there is likely to be an accumulation of rust inside the tank. The rust can flake off and stop up the filter screen on the petcock. But the internals of the carb are probably gummed up too. The slide is probably sticking as well as the float valve. Time for a carb teardown and cleaning. There's a "carb cleanup" thread on the Technical page here. |
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Title: Re: Bike Revs, then Dies Post by ArielT on 01/14/10 at 05:37:34 Carb's been recently cleaned, and the gas tank has a coating of sealant inside. Also, what the devil was that pop? |
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Title: Re: Bike Revs, then Dies Post by MMRanch on 01/14/10 at 07:31:44 The high RPM's and die thing points to float level problems. Two thngs can couse that ; 1. float level not set corectly 2 Trash or oxidation in float seat. Befor you take the carb. off ........... Check fuel flow to it. If you have a good running bike and turn off the fuel ... as the fuel level in carb. drops the RPM will get higher .... till the fuel level gets so low the jets can't pick it up no more. .... then extrem lean condition, and POP, DIE or just DIE. Good luck with it and hope this helps. |
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Title: Re: Bike Revs, then Dies Post by verslagen1 on 01/14/10 at 07:32:02 The carb's been cleaned, so it must'be been off. check the clamps to see if they are loose. also check the carb to see if it was pushed into the rubber thingie all the way. And the other rubber duckies too. sounds to me like you got a intake air leak. |
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Title: Re: Bike Revs, then Dies Post by MMRanch on 01/14/10 at 16:20:40 The float adjustment could still be off... Either way : we're talking about a extremly lean condition. |
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Title: Re: Bike Revs, then Dies Post by Serowbot on 01/14/10 at 17:05:28 Test your petcock,.. it happens a lot... http://suzukisavage.com/cgi-bin/YaBB.pl?num=1251932429 |
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Title: Re: Bike Revs, then Dies Post by smokin_blue on 01/14/10 at 19:35:13 is the slide free and lifting correctly? |
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Title: Re: Bike Revs, then Dies Post by ArielT on 01/14/10 at 23:52:25 So, I'm getting: 1. Check petcock to make sure fuel is flowing properly 2. Check float level to make sure it's set correctly What messes up the float level? Is it likely I futzed with it by accident while I was cleaning stuff, are you supposed to make adjustments every time you clean the carb, or is it something else? 041604161B08070A01490 wrote:
Interesting, so the fumes ignite and cause a little mini explosion? 3A2426222027162B253C2C490 wrote:
I'm afraid I couldn't identify what a slide is, could you describe it to me / show me a picture? |
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Title: Re: Bike Revs, then Dies Post by bill67 on 01/14/10 at 23:56:24 The slide is the thing in the carb like a piston,that goes up and down. |
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Title: Re: Bike Revs, then Dies Post by ArielT on 01/14/10 at 23:59:16 7E7570702A2B1C0 wrote:
Seemed fine when I was in there before. Is there some particular way I should be testing it? |
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Title: Re: Bike Revs, then Dies Post by bill67 on 01/15/10 at 00:09:01 Not that I know of as long as it moves up and down easy. And the rubber boot is intact. |
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Title: Re: Bike Revs, then Dies Post by smokin_blue on 01/15/10 at 05:18:09 456C6F6F6C7B4D59090 wrote:
Seemed fine when I was in there before. Is there some particular way I should be testing it?[/quote] This is assuming you have a stock style CV carb. If you have the carb off then first lift it with your finger, it should go up and then come all the way down and not drag either way. Next seal your lips around the oval shaped opening at the top of the incoming bellmouth of the carb. blow gently to moderately. You should hear (and feel) the slide hit the top as it opens and then when you stop it should drop to the bottom again. This checks the diaphram that lifts the slide and makes sure there aren't any major issues with it or the assembly of it. |
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