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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Backfire before and after a Dyna Swap /cgi-bin/YaBB.pl?num=1328596776 Message started by oceantransistor on 02/06/12 at 22:39:35 |
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Title: Backfire before and after a Dyna Swap Post by oceantransistor on 02/06/12 at 22:39:35 So I finally got my Dyna and the SAVAGE sounds a lot better without the atomic cricket and a lower rumble. I checkerd with a camp lighter and found there's no air leaks anywhere but I'm getting backfire. What should my diagnostics procedure be to find the issue. I hear I should first start with cleaning the air filter and then perhaps rejetting? Any good links to these procedures? |
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Title: Re: Backfire before and after a Dyna Swap Post by LANCER on 02/07/12 at 01:55:51 Look for "Carb tuning" in the Tech section |
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Title: Re: Backfire before and after a Dyna Swap Post by Bubba on 02/07/12 at 06:10:44 yep, rejet...you'll have to experiment with different jets so replace the carb bolts with SS allen heads for ease of access. May have to fiddle with the air mix screw too. Have fun and be patient! |
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Title: Re: Backfire before and after a Dyna Swap Post by justin_o_guy2 on 02/07/12 at 06:51:30 If your air mix screw isnt uncovered yet, do be ever so careflu with the drillbit. A piece of tape wrapped several times a hair back from where the taper stops & the full diameter of the bit starts will do it, figure out what you have around for a screw to pull the cap out with, drill a small enough hole to let the screw Bite before it hits the adjuster screw. That thing is way soft,, its brass. Using a small flatblade, & just using fingertips, screw it in & count the turns, so if things dont work well you can at least get back to Square One. Closing it tight = messin it up, so, be gentle. Opening it too far releases pressure on the spring, making it possible for vibration to cause it to loosen & fall out, or so Ive heard, I havent seen it, but, common thinking on it is, over 3 turns out isnt a good idea. If I needed to go more, I would, but Id get a spring off a ball point pen & put in the mix, Someone else may have another reason for not going more than 3 turns. I didnt like the way it worked out trying to set that in the garage, its pretty fidgety & a small adjustment makes a pretty big change, so, I went for a ride & adjusted in tiny increments at stop lites. I think you made a good choice on the muffler. Congrats on the NO Leak installation. |
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Title: Re: Backfire before and after a Dyna Swap Post by Dutchmen on 02/07/12 at 08:16:00 I put a Jardine w/a dyno jet kit and my still pops. It is just a common thing with this engine. |
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Title: Re: Backfire before and after a Dyna Swap Post by verslagen1 on 02/07/12 at 08:32:14 The more open the back end of a muff is the more likely it will backfire. Thumpers generate a pretty strong puff of exhaust, and this causes a pretty strong return flow back into the muff. If there is any unburnt fuel hanging around... it won't be for long... can you say KERPOW!!!? |
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Title: Re: Backfire before and after a Dyna Swap Post by Serowbot on 02/07/12 at 08:59:40 Wuffle, blat, pops.. on decel are okay and normal... Kerpow's (gunshot cracks) are a problem and should be tuned out... usually by adjusting the pilot circuit or idle mix... sometimes just raising the idle speed a little helps... |
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Title: Re: Backfire before and after a Dyna Swap Post by Routy on 02/08/12 at 05:31:54 6177607D65707D66120 wrote:
Many have gotten into trouble hackin the carb trying to get rid of the backfire. Backfire to a point is normal,.....even Suzuki will not warranty a backfire issue,......because it is not a real problem,....just an issue that can be controlled w/ throttle action. |
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Title: Re: Backfire before and after a Dyna Swap Post by Dutchmen on 02/08/12 at 08:09:06 Mine didn't backfire that much w/stock setup, but was underpowered and too quite. Probably was running too lean. Installed the Jardene and dyno jet kit and it made it worse, but idleing the carb. up higher seems to help. |
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Title: Re: Backfire before and after a Dyna Swap Post by 650krc on 02/08/12 at 10:29:16 Hello this is first response to this forum since I am new to the ls650 world. I have found this is one of the best post and easiest solution to the backfire issue. bruceclarkemexico.tripod.com/ls650.htm happy riding and I am looking forward to next weeks weather in Cincy for it will be in the 50's and dry great riding weather. ;) |
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Title: Re: Backfire before and after a Dyna Swap Post by verslagen1 on 02/08/12 at 10:42:13 bad link |
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Title: Re: Backfire before and after a Dyna Swap Post by Savage_Rob on 02/08/12 at 11:54:04 716275746B6660626936070 wrote:
Worked for me. Try it this way: Click Me (http://bruceclarkemexico.tripod.com/ls650.htm) |
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Title: Re: Backfire before and after a Dyna Swap Post by verslagen1 on 02/08/12 at 13:17:05 thx [smiley=thumbsup.gif] |
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Title: Re: Backfire before and after a Dyna Swap Post by Routy on 02/08/12 at 17:07:53 3D2E3938272A2C2E257A4B0 wrote:
It really is a bad link. Just throw the spacer away ?? In most cases, that is terrible advice. Like I said, many have gotten in real trouble hacking carbs, and still end up w/ the backfire. |
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Title: Re: Backfire before and after a Dyna Swap Post by Savage_Rob on 02/09/12 at 06:14:02 37382239252330323A3423510 wrote:
It really is a bad link. Just throw the spacer away ?? In most cases, that is terrible advice. Like I said, many have gotten in real trouble hacking carbs, and still end up w/ the backfire. [/quote] It's been a while (I've been using an Amal Mk2 for years) but don't most folks either file it down or replace it with thinner version? |
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