still having issues

PenniesEarned · Full Member Joined: May 23, 2008 Posts: 23

well I'm still having issues. I recently replaced my points and condenser. Took off my carbs and cleaned them. Everything looked good. Putting them back on however there are two lines(similar looking to the fuel lines) that are on the inside of the carbs( not the 2 that connect to eachother nor the ones coming off the float chambers). They have soda tab looking fasteners on the lines. Where do I connect those fasteners and are the supposed to be plugged in anywhere else besides the carb? Also my bike wont stay idle and is still backfiring(possibly misfiring?) on the left side. While I was looking down, the left air filter(k&n) actually lit up from the inside. I made some small carb adjustments and it stopped lighting up but still backfired just as bad and still wouldn't idle. Whats my next move? Spark plugs are brand new and gapped correctly. possibly timing or valve issue? should I change my float needle setting?(currently on the middle setting) Thanks in advance

-Ryan

jayel · Posted: October 22, 2008, 10:57 pm Post subject: Re: still having issues

kind of out of the upper center inside of the carbs? atmospheric balance vents, leave them open to air (lets air into the float bowls) goes down to two little tabs that mount on the float bowl screws (hoses are only about 4" long) if your timing is ok that backfiring thru the carb is probably a tight intake valve

PenniesEarned · Full Member Joined: May 23, 2008 Posts: 23

thanks jayel I'll give that a try. I figured those lines were to let air in I just had to make sure.

PenniesEarned · Full Member Joined: May 23, 2008 Posts: 23

So I checked the timing via the alternator setting and it appears the left contact is off somewhat. I changed the left contact setting to coincide as much as possible but still seems to have a larger gap when open if that makes sense. with the bike running and the contact point cover off it appears as the left contact has a blue spark flashing constantly and the right contact only shows a yellowish spark occasionally. Again my left cylinder is still backfiring, however, the bike has a nice quiet idle now. It only backfires when rev'ed and hesitates like crazy when riding. I have yet to check my intake valve. Is that my next move? Thanks in advance,

-ryan

jayel · Posted: October 24, 2008, 9:55 pm Post subject: Re: still having issues

both contacts should be set to the same gap, then the points plates are adjusted to time the cylinders, yellow spark indicates bad condenser are you sure it's plugged in correctly?

PenniesEarned · Full Member Joined: May 23, 2008 Posts: 23

Damn your quick. I'll check if it's plugged in correctly tomorrow. Also I have a question, the manual I have talks about 2 condensers but I only have one. Is that my issue? I wouldn't think it would run if I needed 2 but only had one. Also I haven't changed the point plate setting yet(are you talking about the gap lock screw or the L.H. timing lock screw as per the illustration?). Thanks again, I'm an ultra noob but have already learned a lot.

-ryan

jayel · Posted: October 24, 2008, 10:54 pm Post subject: Re: still having issues

the stock condenser is a double unit (two wires) one to each set of points/coils, the ground connection is made thru the frame mounting screws

5twins · Full Member Joined: Aug 05, 2006 Posts: 1616

It sounds like your points gap is too big on the left set and the timing is probably off as well. Both can cause misfiring like you're experiencing. Any time you change the points gap, you change the timing. That's why you must set the points gap first. Any time you replace points, you should re-check the timing. Chances are the new set is not gapped exactly the same as the old one so your timing will have changed slightly. Here's a write-up that explains the procedure. Coupled with the diagrams you have, you should be able to figure it out .....

xs650temp.proboards29....hread=7984

PenniesEarned · Full Member Joined: May 23, 2008 Posts: 23

thanks for the info guys. I'll report back with results

PenniesEarned · Full Member Joined: May 23, 2008 Posts: 23

so one quick question before I go try to do this. What should the points look like when the bike is running? Constant blue spark or no spark? Thanks

-ryan

jayel · Posted: October 26, 2008, 3:34 pm Post subject: Re: still having issues

in a dark room you would see blue sparks at the contacts of the points but it shouldn't have a large arcing spark

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