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General Category >> Rubber Side Down! >> missing, back firinging and black puffs of exhaust
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Message started by kritchie on 06/10/12 at 18:07:44

Title: missing, back firinging and black puffs of exhaust
Post by kritchie on 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

Title: Re: missing, back firinging and black puffs of exh
Post by justin_o_guy2 on 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,,

Title: Re: missing, back firinging and black puffs of exh
Post by verslagen1 on 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?

Title: Re: missing, back firinging and black puffs of exh
Post by kritchie on 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

Title: Re: missing, back firinging and black puffs of exh
Post by Dave on 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.

Title: Re: missing, back firinging and black puffs of exh
Post by kritchie on 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

Title: Re: missing, back firinging and black puffs of exh
Post by justin_o_guy2 on 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.