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  #1  
Old 12-03-2007, 11:16 AM
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Smile Cr wont start

Hi Guys
I have a cr 125 1996 that wont start, the last time i rode it it went fine (got a little hot thou) then when i stopped riding it cut out and didn't start again so i left it for a couple of days.
Now i cant get it started, i have tried push starting it too, it has spark, fuel and compression and i have replaced the spark plug but it keeps getting flooded. i even tried putting a bit of fuel into the barrel and still had no luck, please could someone help me with this.
Thanks
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Old 12-03-2007, 11:20 AM
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Default Re: Cr wont start

You did remember to mix the gas right? :duh I would check the coolant to since it was getting hot.
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Old 12-03-2007, 11:27 AM
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Smile Re: Cr wont start

Yes i did, all my fuel i have been using is premixed before i use it.
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Old 12-03-2007, 04:52 PM
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Default Re: Cr wont start

hmm. I don't know maybe you seized it, was it hard to kick over when you tried to start it today?
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Old 12-03-2007, 05:07 PM
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Default Re: Cr wont start

Hmmm, same sort of thing happened to me with my '97 Cr125. Are you sure that you're getting the right type of plug? Whoever had my bike before me was using some plug that wasn't even meant for a dirt bike and I just put the stock plug in and it runs fine now.
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Old 12-03-2007, 06:21 PM
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Default Re: Cr wont start

When you say the plug keeps fouling is it just wet or real dark black? I have had the same thing happen on two bikes and it was the ring gap and ring wear. Unless you have a snap on or high end compression tester or knew the baseline after rebuild it may not be what you reading.
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Old 12-03-2007, 06:52 PM
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Usflag Re: Cr wont start

You may want to post the same question in the Honda 2T forum so the gurus there will pick up on this one. Best of luck too.

Bill
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Old 12-04-2007, 02:05 AM
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Smile Re: Cr wont start

Well the bike definitely didn't seize because i could kick it over and had the same compression it always had. I am sure i am using the right plug because it is the one recommended in the manual. the old plug was dark black but now the new one just gets wet and might give a little backfire but thats about it. and i have taken my cylinder head off to see if the barrel is scratched or ring broken, but everything in there is fine.could it be the ignition coil or CDI firing at the wrong time for some reason? Any other options to try?
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Old 12-04-2007, 07:14 AM
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Default Re: Cr wont start

OK we are getting Gas but still unsure as to the spark and compression. When you say it "has the same compression it always did" how are you measuring it? Not by the feel to the kick starter right? When you say you have spark is it a dark blue spark that is easily seen? I doubt it is at the "Wrong Time" but may be weak.
You stated you looked at the cylinder/rings and it looked OK. Did you take measurements? As I said before I have had 2 bikes where the ring gap was to large and just won't start. You can't really look at the rings or cylinder and know it is OK, unless there is obvious damage. The another thing I would look into is the Reeds, make sure they sit flat and nothing is cracked or broken.
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Old 12-04-2007, 10:17 AM
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Default Re: Cr wont start

I think you have to quit assuming that your bike has the same compression,,,got hot, quit running??? sometimes the drag you get from a seized engine can feel like "compression" especially if you haven't been through the experience. I would at least remove the pipe and inspect the front of the piston. You can do that faster than you can log on and post, I bet.

Bikes which have no spark, or no compression do just as yours do, they get the plug wet (yours likely has some carburetion problems too, and a leak or two) without any actual combustion taking place. If you have a manual it will tell you what the resistance readings should be on your stator, so those are the two places that I would go. I bet it makes a "mystery" really simple after that.
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