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Old 11-01-2014, 01:33 PM   #1
iriebelle OP
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Klr 650 turns over but won't start

Dudes and dudettes,
I have a 99 that was running fine. I went to hop on her the next morning and no start. Really strange because this bike has always started with no issues. I have verified a spark and fuel. Any thoughts?
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Old 11-01-2014, 02:19 PM   #2
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Your engine needs 3 things to fire,and you have already eliminated 2 of them.
Check the compression.
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Old 11-01-2014, 09:43 PM   #3
iriebelle OP
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I'll need to get an adaptor. I've read conflicting reports on being able to do a compression test. When I go into town I'll get one. Between 75 and 125 psi right.
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Old 11-01-2014, 09:45 PM   #4
iriebelle OP
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It is very strange that it was running fine when I shut her down.
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Old 11-01-2014, 11:04 PM   #5
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done the doohicky lately? sometimes the key in the rotor gets pushed out during re-assembley.... it'll work for a while then the rotor slips. it'll still spark but it won't run. I've also seen a paper towel go through the cam chain & bump the valve timing just enough to not run.

put the bike in gear & push it.... got compression?

is yes, first thing I'd do is change the plug, then I'd shoot starting fluid into the carb (pull the filter, open the slide)

maybe put a timing light on the rotor while you crank & look for the marks (take out the plug)

pull the valve cover & verify the cam timing
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Old 12-22-2014, 09:12 AM   #6
iriebelle OP
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Yo, Back to it again, you know work life kids wife. these things take time. found some tiime yesterday to work on the bike and got it to start by covering up the airbox with some plastic. WTF?? After it started, ran fine. shut it down did happy dance then went back to start and I got nothing other then a backfire..... Compression was at 70# BTW. Im puzzled. Please help, only one more day until the weekend is over.
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Old 12-22-2014, 09:31 AM   #7
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70psi is no good. Time to look deeper and see why you have such low compression numbers.
I would start by checking valve clearances.


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Old 12-22-2014, 02:21 PM   #8
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unless you disabled the automatic compression release (on the right side exhaust valve) the compression numbers will be low.... it's OK. it sounds like it's starving for fuel. covering the air box makes the mixture rich.

how old is your fuel? did it come from a good source? any sign of water?
drain the carb a few times to see if it has clear, good fuel (catch the fuel so you can examine it).

pull the fuel line off the carb and crank the engine... fuel should flow freely from the tank. you need to crank because the petcock has a vacuum operated shut off (shuts off fuel when the engine is off). if the fuel flow is weak, then either petcock needs work, the internal fuel screen is plugged, or the vacuum line is bad. the vac line is the small one from the petcock to the intake side of the carb. these are known to get soft and collapse. if you have a vac source, you can apply it to the vac line & fuel should flow from the petcock, same as when the engine runs. check all fuel lines while you're at it. if all that checks out, pull the carb & start cleaning. there should be some how to do's on the net

edit: I re-read your thing & ya.... checking the valves is a good idea. hard start & runs fine after it does start is a symptom of tight valves. I would still verify good fuel flow
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