bike help please
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bike help please - 4/18/2008 8:07:23 AM
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diabloCBR15
Posts: 65
Joined: 1/9/2008
Status: offline
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Hello riders
so i posted earlier and had problems getting the starter motor to crank. however, after a starter relay replacement and a new CDI, the starter motor cranks but no fire. it just wont start. i hear it sputtering at the muffler and smell rich gas, so i would assume the plugs arent firing. what could be the problem? ignition coils? and why the hell would they go bad. the bike has been in my house for the winter and the only thing done to it was carb cleaning and fork seal replacement. although i must admit i opened the timing case thing on the right side and thought i tinkered, but put it right back the way it was. plugs are not brand new but fairly new. my only other thought would be that the engine on off switch is broken and wont complete the circuit to fire. although the start button works. so i am completely out of ideas.. please help me here. i dont want to spend a fortune at the mechanic to fix somthing simple. thanks
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RE: bike help please - 4/18/2008 10:01:07 AM
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Clorox09
Posts: 34
Joined: 4/15/2008
Status: offline
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Make sure all the plugs are getting spark. Ground the wires with a screwdriver to frame make sure you have spark.... Also the plugs might be fouled since its just been crankin, try pulling them out clean em if new/regap. You never actually touched the timing chain tho really like caused slack or anyting?
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RE: bike help please - 4/18/2008 11:56:53 AM
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diabloCBR15
Posts: 65
Joined: 1/9/2008
Status: offline
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no,nothing.just twisted thatbolt andthen returned it to its original place.
ok this might sound like a dumb question but how exactly doyou check for spark?
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RE: bike help please - 4/18/2008 3:51:15 PM
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rookie year
Posts: 108
Joined: 4/4/2008
Status: offline
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to check the spark from each cylinder,unplug each coils, take one spark plug out and plug it into the coil wire out the sparkplug back into the coil and hold it against the frame and press the start button while it 's still against the frame if you gat a blue spark between the frame and plug then that cylinder is get a spark,repeat this for the other 3 cylinders. good luck
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RE: bike help please - 4/18/2008 9:48:58 PM
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radtechrider
Posts: 89
Joined: 1/2/2008
Status: offline
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If you dont have spark at the plug, make sure you have fire from the coil. Take a screwdriver and put it in the place of the plug. Make sure you are getting that same spark from the coil to the screwdriver that is grounded at the frame. No need buying plugs if the coil doesnt have fire. If it doesnt have fire at the coil you can go backward from there to find the reason you dont have fire.
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RE: bike help please - 4/18/2008 10:00:00 PM
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SurfnSCal
Posts: 172
Joined: 1/30/2008
Status: offline
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Well it is going to smell rich, you are cranking over the unit without it firing, so you are dumping that raw fuel into your pipes. What i would do is pop off the air box or if there is an opening in the air box for fresh fuel, i usually spray carb clean or brake cleaner in there and if you got spark and just not getting fuel, or you are running some really really bad fuel that carb clean should act like an alternate and it will sputter, fire, or even run depending how you monitor your spray and throttle opening. If you get nothing, then pop off the spark plug caps and remove your plugs. Easy way to check for spark is to plug in the plugs into the coil caps and lay the plug on the head and crank it over. You'll see this nice blue spark. If you don't get anything, see if there is battery voltage at one of the coil leads....the one or two small wires plugging into the coil.! If nothing then you aren't getting power to it, maybe check fuses first. Try that for starters
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