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missing, back firinging and black puffs of exhaust (Read 87 times)

kritchie

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SuzukiSavage.com
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missing, back firinging and black puffs of exhaust
06/10/12 at 18:07:44

ok need some help here 86 savage been running good did valve adjustment on it Friday night ran it saturday no issues today started then stalled hard to get running again then drove good all day started and stopped fine, now to put it away started and ran then started missing back firing and quit hard to restart ran for about a minute then started missing backfiring and puffing black smoke out exhaust.

do not know what to think or what to check

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justin_o_guy2

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Re: missing, back firinging and black puffs of exh
Reply #1 - 06/10/12 at 19:46:17

Welll,,, could just be a coincidence,, orr,, maybe ya didnt tighten a jam nut all the way? Why dont ya pop the valve covers off & just feel of the adjusters & make sure theyre all secure?
Or, are you feeling good about it? YOu sure you got them all tight?
IDK exactly how that would make the black smoke, unless its an exhaust valve not opening, Id start on that side.,Unless you feel good about it, then IDK what it mite be,,

The people never give up their liberties but under some delusion.- Edmund Burke.

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: missing, back firinging and black puffs of exh Reply #2 - 06/10/12 at 20:00:00 Did you follow the instructions here or from clymers? you know about the clymers errors don't you?
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kritchie YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 13 Ontario Canada Gender:	Re: missing, back firinging and black puffs of exh Reply #3 - 06/11/12 at 07:33:04 i followed the instructions here. will check the valves, i am sure i got them all tight. but it is a good starting point and it takes nothing to get to them and check will let you know thanks kritchie
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Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 18092 Camp Springs, Kentucky Gender:	Re: missing, back firinging and black puffs of exh Reply #4 - 06/11/12 at 08:45:44 If the valves check out - The symptoms of backfiring, black smoke, etc. sounds like an ignition issue to me. It could be as simple as a spark plug gone bad - or some problem related to the coil or rotor/stator....or kick stand switch.
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kritchie YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 13 Ontario Canada Gender:	Re: missing, back firinging and black puffs of exh Reply #5 - 06/11/12 at 16:17:35 OK up date checked the valves all good and tight, pulled the plug and it was extremely fouled not sure why it was looking really good prior to setting the valves but changed the plug and seams to work fine. if continues to foul plug i will have to get deeper into it LOL thanks for the help kritchie
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: missing, back firinging and black puffs of exh Reply #6 - 06/11/12 at 21:00:44 Is it possible the decomp is stuck? Check the cable, pull it, look at the part its supposed to rotate, push it in the direction the spring is pushing it. I doubt seriously thats it, but its zero cost & 3easy to look at.
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