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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> lean or rich?? /cgi-bin/YaBB.pl?num=1502649408 Message started by Tobias dk on 08/13/17 at 11:36:47 |
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Title: lean or rich?? Post by Tobias dk on 08/13/17 at 11:36:47 hello guys, Tobias from Denmark here. i ride an '87 savage, wich has been slightly modded to resemble a bobber. i have gotten myself into a mess with the carb adjustment, and am getting a bit frustrated. does someone know if i can tell wether it is running lean or rich? i just changed the sparkplug, and it looked burned as nuts, so im thinking ive been running rich!?! you know any shortcuts? hopeful greetings from scandinavia! |
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Title: Re: lean or rich?? Post by justin_o_guy2 on 08/13/17 at 13:29:30 If you don't have a Yamaha Raptor petcock, you need to. Is the exhaust stock? How many miles on it? Was the plug old? Is the air filter clean and dry? What mods , aside from looks, are done? Is it burning oil? Smoking? Got soot on the brake arm? |
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Title: Re: lean or rich?? Post by Gary_in_NJ on 08/13/17 at 14:12:17 Looking at an old plug wont give you much information. A lean condition usually presents itself as "bog" or a hesitation when the throttle is opened rapidly. Where the lean bog happens indicates the the circuit or circuits. A rich condition is commonly referred to as "2-strokin" as it mimics a 2 stroke brap-brap-brap. Additionally, a lean condition usually clears when the throttle position is steady (unless its really lean and then the bike feels like its brakes are being applied in an on/off/on/off manner this is called a lean surge) whereas the rich condition is always present. |
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Title: Re: lean or rich?? Post by Tobias dk on 08/13/17 at 14:12:29 Its not a yamaha raptor petcock, but it looks like it?! Not stock exhaust, but not sure if its a clear blow thru.. 34000 km i thats about 22000 miles Dont know how old plug was, but looked pretty New, despite from the soot filled tip. Just changed the air filter last week I think only cosmetic change, but not sure. Don't know anyone with a savage i can compare with. I havent noticed smoke, only occasionaly. But I have been experimenting with the carb setting for two months now. Will check brake arm in the morning for soot, bed time now! Thank you for helping me! |
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Title: Re: lean or rich?? Post by justin_o_guy2 on 08/13/17 at 15:43:47 Okay, you've got a problem you're chasing. Let's start over. Why are you thinking it's either rich or lean? What changed? At 22,000 miles, if you have not looked at the cam chain, you Really need to. I wouldn't start it again if it's never been serviced. What's the problem? Symptoms How did it develop? Check your petcock. Troubleshooting steps are in the Technical support section. You'll win it. Be patient. |
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Title: Re: lean or rich?? Post by Armen on 08/13/17 at 15:46:22 One simple rule-if it runs better when hot, it's probably lean. If it runs worse, it's prob rich. |
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Title: Re: lean or rich?? Post by justin_o_guy2 on 08/13/17 at 15:54:33 If it changed how it's running, the question is Why? |
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Title: Re: lean or rich?? Post by justin_o_guy2 on 08/13/17 at 16:00:42 How long have you owned it? How many miles have You ridden it? Did it ever act right? When it started acting up, what did it do? Has the MPG changed dramatically? A bad petcock often puts gas in the oil, and air filter gets wet sometimes, too. |
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Title: Re: lean or rich?? Post by Tobias dk on 08/14/17 at 00:22:04 I bought it 2 months ago, and have ridden it for Ca 200 miles. IT started with some dude i know, Who is an old mechanic, telling me that it was running rich, hence the afterfire.. So i started tampering with it, like the stupid electrician i am.. Ive gone to him a few times for advice, and he told me to change air filter and sparkplug. But im afraid im abusing his hospitality, and starting to get on his nerves... [ch128513] Btw, what is the "cam chain"? [ch128559] I dont Pay attention to mpg, so i would t know. Could you maybe post a link to the petcock you recommended, im definitely getting that! Alot of good advice, i will do some testing and get back to all, thanks a lot guys! |
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Title: Re: lean or rich?? Post by justin_o_guy2 on 08/14/17 at 00:31:19 Ask him if he has checked the cam chain. If not, I wouldn't start it again. I've been around enough to see a few engines destroyed. The exhaust header loose at the head will make it backfires. Be very gentle with the bolts. |
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Title: Re: lean or rich?? Post by ohiomoto on 08/14/17 at 07:45:34 Our bikes do backfire and poof a bit when you shift and when you shut it down. 556679717A140 wrote:
Almost fool proof. Ride it on a cool morning and then again on a hot afternoon taking note of the differences. 3E34303A31383C356B6D69590 wrote:
Good advise to go along with what Armen posted. |
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Title: Re: lean or rich?? Post by Tobias dk on 08/15/17 at 00:11:12 what is the type of raptor petcock i should buy? as far as i can tell there some different types... and as a side note, the bike has been running better for the last two days, maybe i am finally finding the right setting! :) thanks alot guys! |
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Title: Re: lean or rich?? Post by IslandRoad on 08/15/17 at 01:24:32 https://www.ebay.com/p/Fuel-Gas-Tank-Petcock-Turn-Valve-thingy-OEM-Yamaha-Raptor-YFM660R-YFM-660R-660-R/1023314198 Don't be tempted by cheap knock-offs ;) |
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Title: Re: lean or rich?? Post by IslandRoad on 08/15/17 at 01:26:50 This is the part number: 5LP-24500-01-00 You could shop around, just make sure it's OEM. |
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Title: Re: lean or rich?? Post by Tobias dk on 03/30/18 at 11:11:18 Okay, so picking up where i left of.. Just rode it about 15 miles, and with some thing like "carbureator ethanol" (my Best translation) it drove very Well. But coming home, with a lot of intersections and full stops, it kept going out.. Could easy start again, but it Kind of worries me.. You guys have Any idea what it might be? Cheers from crappity smacking cold Denmark.! |
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Title: Re: lean or rich?? Post by justin_o_guy2 on 03/30/18 at 13:32:16 Is your idle speed right? |
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Title: Re: lean or rich?? Post by batman on 04/03/18 at 12:30:15 You can check idle speed by warming the motor ,finding a level road, put the bike in first gear , throttle closed ,it should idle down the road at between 13-15kph. |
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Title: Re: lean or rich?? Post by Tobias dk on 04/17/18 at 06:06:45 im gonna try the "idle ride" and see what the speedometer says. just spoke to a colleague, he was "certain" it was the diaphragm in the carb that was busted, what do you think? the only one i can find is 260$, so that would suck ass. also just found out that there is a leak in my exhaust pipe (which is just a straight pipe), so im gonna try to fix that to and get back to you. thank you for your replys! |
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Title: Re: lean or rich?? Post by Eegore on 04/17/18 at 08:17:32 7073667F737C262A120 wrote:
None of my bikes do that, they die. |
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Title: Re: lean or rich?? Post by justin_o_guy2 on 04/17/18 at 08:35:26 Mine does it. If your bike won't roll, idling in first on level ground, something is wrong. Does it roll okay in neutral? |
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Title: Re: lean or rich?? Post by Eegore on 04/17/18 at 09:29:15 They roll fine in neutral, but my experience is they die out if I don't add throttle. I will have someone near the bikes double check as I am not able to at this time. |
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Title: Re: lean or rich?? Post by kojones on 04/17/18 at 09:50:32 6C777A71796B6D7C7D767079796A180 wrote:
I wouldn't replace the diaphgram, I would replace the carb. Used BS40 from eBay is a bit of gamble, but I would go for the VM36. Albeit, a new diaphgram can be bought for 72 euros incl. shipping to Denmark. |
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Title: Re: lean or rich?? Post by batman on 04/17/18 at 19:23:52 If the diaphragm in the carb was bad it would limit the slide opening, causing a lean condition ,and you would not find soot on the plug. I'd be looking at what would make things change , and run rich . petcock (Raptor-first and foremost), use of large jets (soot build up on the plug over time), damaged float bowl inlet valve(ring around the tip), improper float level height ( to high),damaged O-ring on the outside of the float valve seat. |
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Title: Re: lean or rich?? Post by Tobias dk on 04/24/18 at 23:21:06 okay. so the last couple of days it has been running smooth and nice. maybe the raptor was the right move after all.. been running with some carb ethanol, and adjusted the idle a bit, and it seems like it has done the trick! im gonna forget about the diapragm and other carb issues for now, and just see how it goes for the next couple of weeks. thanks a lot for all your input, it is nice to know i can turn to you guys for hints and tricks! |
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Title: Re: lean or rich?? Post by drannonb on 04/25/18 at 11:42:27 Thanks IslandRoad, just picked one up! |
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Title: Re: lean or rich?? Post by Tobias dk on 05/16/18 at 08:47:06 43474247464D5B280 wrote:
I wouldn't replace the diaphgram, I would replace the carb. Used BS40 from eBay is a bit of gamble, but I would go for the VM36. Albeit, a new diaphgram can be bought for 72 euros incl. shipping to Denmark.[/quote] So it my carb has filled up my engine with gas... Just drained the oil/gas out. Maybe i will go for the vm36. Is there Any thing Else i would need? Or is it plug and play? I honestly know nothing of carb... Br Tobias |
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Title: Re: lean or rich?? Post by batman on 05/16/18 at 16:23:25 If you have gas in your oil it has to do with your float level . either the fuel is moving around the float valve seat due to a bad O-ring, your float valve tip is worn out ( seen as a groved circle on the tip ) or the float is at an incorrect height (there's a hole in it, or it's set wrong ). If you don't know much about carbs setting up a VM36 may be opening a whole new can of worms. |
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Title: Re: lean or rich?? Post by Tobias dk on 05/17/18 at 11:09:08 darn, was hoping for an easy fix... So i should buy a rep Kit or what? And try changing o-rings and stuff? |
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Title: Re: lean or rich?? Post by kojones on 05/17/18 at 11:46:20 6279747F7765637273787E777764160 wrote:
Replace your needle valve and seat. Should fix your problem and can be done without taking the carb off the bike. |
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Title: Re: lean or rich?? Post by batman on 05/18/18 at 17:22:22 It is an easy fix ,4 screws drop the bottom carb bowl and allows you access to the float , float valve, and both the pilot and main jets. I'd remove the carb as it makes it easier to work on ,and see what your doing , and see if you need to clean it. The last thing to do before closing it up is to set the float level.( when removing the float be careful as the pin it swings on only comes out in one direction ,be gentle so you don't break the carb body ,it's soft metal.remove the jets and make sure all the fine holes are open . Your stalling at red lights be sure to check the pilot jet. |
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Title: Re: lean or rich?? Post by Tobias dk on 05/29/18 at 23:22:28 the rep kit seems to have done the trick! thanks alot you guys!! :) |
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