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Old 12-28-2013, 03:54 PM   #1
nguyen925
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Valve adjustment for 07' Yamaha r6

Just recently purchased a 07 r6 and it a having some issues starting without using the throttle. I'm about to change the spark plugs and just recently swapped out the throttle bodies (throttle was not snapping back and was "sticking"). Will getting the values adjusted fix this cold starting issue?

The r6 will die of I don't keep the rpms over 3 or 4k the it sounds like the engine is lagging a bit. I am able to keep the engine on after I let it idle at higher rpms for 15-20 seconds.


Changing the spark plugs is as far as I'm probably able to go mechanically. I live on the SW side of Houston near Sugar Land.
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Old 12-28-2013, 04:00 PM   #2
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I wouldn't jump on the valves right now but you should inspect or change the plugs . The "sticky" throttle could be the cable needing lube . As for it not idling correctly i would say its a fueling issue , buy some sea foam and run the bike for 3-5 minutes then let it sit over night .
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Old 12-28-2013, 04:04 PM   #3
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How many miles
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Old 12-28-2013, 04:43 PM   #4
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so was this happening before to swapped TBs
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Old 12-28-2013, 05:47 PM   #5
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It's your exhaust valves. They are too tight. Very common r6 problem. They go tight at about 12k miles on a street bike and sooner on a race bike.
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Old 12-28-2013, 06:33 PM   #6
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Quote:
Originally Posted by chase View Post
It's your exhaust valves. They are too tight. Very common r6 problem. They go tight at about 12k miles on a street bike and sooner on a race bike.
What other years is this a common problem 06 07? Or 08+ also?
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Old 12-28-2013, 06:35 PM   #7
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06 and 07 were the worst. It still happens on the newer ones just probably not as soon
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Old 12-28-2013, 07:34 PM   #8
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Quote:
Originally Posted by chase View Post
06 and 07 were the worst. It still happens on the newer ones just probably not as soon
Oh okay I noticed that with my 08 I just bought a few days ago, I need to open the throttle just a tad bit for it to start but no issues idling or anything
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Old 12-28-2013, 08:20 PM   #9
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Quote:
Originally Posted by chase View Post
It's your exhaust valves. They are too tight. Very common r6 problem. They go tight at about 12k miles on a street bike and sooner on a race bike.
OP, you didn't state your mileage but it's highly possible.
'06 up R6's (non S) are notorious for the valves tightening up early.
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Old 12-30-2013, 01:43 AM   #10
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Sorry been busy with work but the mileage currently stands at 17k. Not sure if the symptoms were present before I replaced the throttle body assembly but my friend did say he had some issues starting the bike before we embarked on replacing the cables/TB to fix the sticky throttle.

Can I fix this myself? I'm guessing I probably wont have too many issues riding it to a shop.
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Old 12-30-2013, 02:44 AM   #11
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It's a tedious job and unless you have a lot of time, tools, and know how it can be done. If you're asking, take it to a shop. Motorcycles unlimited or any other of our sponsors.
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