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Black smoke. (Read 141 times)

lonerider65

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Black smoke.
07/20/11 at 13:14:18

My bobber project is going awesome. My bike had a bad exhaust leak when I got it and ran like crap. I have done the verslavy conversion and adjusted the valves ( although the top end still has some ticking) the thing pounds the ground like a big twin V ( doesnt sound stock by no means). The carb has been jetted and has a smaller nylon washer. I made the exhaust out of a old sportster drag pipe. Now the prob is when idling it puffs blacksmoke. It doesnt backfire and has plenty of power. It blows some when the throttle is twisted but thats to be expected. Turning the air fuel screw doesnt seem to have any effect. Its so rich that it will foul the plug after a while, but it doesnt backfire. What gives?

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EJID Serious Thumper Offline Work to ride and ride to work. Posts: 1536 Pocatello, ID Gender:	Re: Black smoke. Reply #1 - 07/20/11 at 13:19:29 I'd say start with the jetting. What jets are in there? Is there a washer under the main jet?
Back to top	05 S40 15" Memphis Slim, FXDWG Bars, Moved Rear Signals, Saddlebags, Fork Bag, Mini-Tach, Raptor, Cone Filter, Fishtail Muffler, Mix Screw Out 2.5 Turns, 4" Fwd Controls, 147.5 Main/55 Pilot @ 4500 IP Logged

lonerider65 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 24	Re: Black smoke. Reply #2 - 07/20/11 at 13:25:36 There is a smaller nylon washer on the needle. No washer under the pilot. Also I forgot to say that it has an open air breather (cone). Im not sure of the jet size, I couldnt make out the numbers. I compared the jet to a 180 jet that I had and it was smaller.
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lonerider65 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 24	Re: Black smoke. Reply #3 - 07/20/11 at 13:38:40
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CalisOsin Senior Member Offline Rather die, than live down on my knees. Posts: 297 Orange County, Ca Gender:	Re: Black smoke. Reply #4 - 07/20/11 at 13:40:10 is that alligator skin on your seat?! Nice!
Back to top	'97, k&n airfilter, bcb pipe, custom leather seat, monoshock, custom bars IP Logged

lonerider65 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 24	Re: Black smoke. Reply #5 - 07/20/11 at 13:45:27 Yea, looks purty cool I thought. Paint and hide the wires in the bars is all thats left. Then ride untill the rigid rearend beats my kidneys into my throat!
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MrBrownTX Full Member Offline Posts: 242 Caddo Mills TX Gender:	Re: Black smoke. Reply #6 - 07/20/11 at 14:11:20 That's gorgeous!
Back to top	Used to have 2006 S40 http://suzukisavage.com/cgi-bin/YaBB.pl?num=1331666008/0 Gear up like you are going to slide across the pavement. Ride like everyone else is trying to kill you IP Logged

Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28658 Tucson Az Gender:	Re: Black smoke. Reply #7 - 07/20/11 at 14:12:26 Black smoke is definitely rich... Check this... How to check your petcock,...
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lonerider65 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 24	Re: Black smoke. Reply #8 - 07/20/11 at 14:17:20 Thanks for the info, I spotted right away that the vaccum from my petcock goes to the left side of my carb. Now that I know that it is all crossed up, do you guys know of vacuum routing diagram?
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verslagen1

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Re: Black smoke.
Reply #9 - 07/20/11 at 14:27:53

lonerider65 wrote on 07/20/11 at 13:14:18:

Turning the air fuel screw doesnt seem to have any effect. Its so rich that it will foul the plug after a while, but it doesnt backfire. What gives?

backfire (technically, to be correct, afterfire) is caused by being overly lean.
what happens is the engine misses, the gas vapors collect in the exhaust, when enough oxygen is drawn in, a spark from a non miss lights it and bang.

so being incredably rich, there's no miss fire, no oxygen, no bang... no joy.

Versey's Place
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28886 L.A. California Gender:	Re: Black smoke. Reply #10 - 07/20/11 at 14:29:24 lonerider65 wrote on 07/20/11 at 14:17:20: Thanks for the info, I spotted right away that the vaccum from my petcock goes to the left side of my carb. Now that I know that it is all crossed up, do you guys know of vacuum routing diagram? check the link below, look for carb, stock, spec's.
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lonerider65 YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 24	Re: Black smoke. Reply #11 - 07/20/11 at 14:32:44 Ok Thanks
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