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Old 08-21-2014, 08:56 PM   #1
oddengineer OP
Joined: Aug 2014
Oddometer: 2
xr 600 running poorly

Hey everyone new to this forum been doing research and haven't been able to find an answer as to what could be causing thisproblem on my bike . I recently had the motor rebuilt by a shop got it started and it feels like the motor is cutting in and out tried cleaning out the carb a million times rejetted it thinking that was the issue no change. Next I checked all the electrical and everything was within spec according to the manual. However when you start the bike up you hear a ticking noise coming from the valve train area. I have a feeling that the cam chain is stretched out but would this cause the cutting in and out while at constant speed that's the only time I really notice it . Also suspect the cdi to be bad but everyone says that if the cdi is bad it would not work at all
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Old 08-21-2014, 10:46 PM   #2
Gnarly Adventurer
Joined: Jun 2011
Location: Toukley NSW Australia
Oddometer: 432
A bad CDI can cause lots of different symptoms. I've had hard starting, intermittent spark, cutting out and electronic advance issues. If you know your CDI is bad, replace it.

The ticking could be stretched camchain, but if the motor was rebuilt professionally I doubt they'd put a worn camchain back in. Could be a tensioner problem not keeping the camchain tight enough.
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Old 08-22-2014, 10:40 AM   #3
oddengineer OP
Joined: Aug 2014
Oddometer: 2
not for certain

I'm not 100% sure the cdi is bad however by the sounds of it and what you described it could be. I ordered a good used one offline when it comes I'm going to install it and see if that fixes the issue. If not back to square one. Ya I'm pretty sure the chain is stretched also my rocker arms they should move freely right not if they are in one spot and you turn the valve cover upside down they stay where they are? Or is this normal?
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