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MPSniper
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'04 R6 misfiring on full throttle at 12k-> rpm???
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'04 R6 misfiring on full throttle at 12k-> rpm??? - August 30, 2006, 09:17 AM

Trying to figure out what is going on with my '04 R6. It's misfiring/hesitation when I'm on full throttle after it gets up too about 12.5K rpm.

It's happened in 2nd and 3rd gear so it's not the 2nd gear issue with the R6's.

Any ideas? If I roll through the RPM's on anything other than full throttle, I can go up to 14K rpm with no hesitation.

Is it a ECU issue? Just really weird it's only on full throttle.

Thanks for the ideas.
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August 30, 2006, 09:18 AM

check your spark plugs


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whoa preppy......
 
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August 30, 2006, 09:19 AM

mods?


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August 30, 2006, 09:34 AM

Quote:
Originally Posted by r6hokie
check your spark plugs
+1 and add in the air filter as well!

If you have a power commander make sure you have the correct map programmed as well.

give us more info on the bike along with any history of crashes or problems.

riding history, mods, mileage, service intervals, etc...etc...


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August 30, 2006, 10:09 AM

Update - No performance MODS

Crashes - never downed/crashed.

Miles - 9,500
Last Service - 4 months ago, had it prepped for the riding season, plugs, oil/oil filter/new tires, etc.

I ride her hard and often get her up to 14k rpm or ride her between 10-12rpm for extended periods of time.

Need to get the oil changed but doubt that's causing the problem.

Thanks for the help!

Last edited by demitriusr6; August 30, 2006 at 10:16 AM..
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August 30, 2006, 10:14 AM

Quote:
Originally Posted by demitriusr6
Update - No performance MODS
Check the plugs and or change them along with the air filter.


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August 30, 2006, 11:13 AM

that could be anything.

IT could be the ECU, Plugs, fuel injectors.

Does an error code show up after it misfires?

I think it is the ECU.


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August 30, 2006, 11:21 AM

No codes or anything on the display.

Finally got a spot to take in at Fast Lane Cycles in Chantilly. Tried Champion in Sterling/Herndon but they are working with a part time mechanic. I guess their main one was driving in from Winchester everyday and couldn't handle it anymore. Champion has an agreement with Fast Lane to handle the overflow.

Loudon Motorsports is booked for about a month but I really like that shop.
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August 30, 2006, 01:48 PM

thats why I dont ride Yamaha's...
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August 30, 2006, 01:54 PM

Quote:
Originally Posted by iceblizzxdc
thats why I dont ride Yamaha's...


Yamaha's are one of the most reliable bikes out there...go to any race weekend and the majority of the bikes are Yamaha's.

Or is it that you don't ride Yamaha's because you prefer Suzuki???

BTW...I own and ride a Suzuki and also ride/race Yamaha's as well...


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August 30, 2006, 02:32 PM

I would bet money it is one of the four following

spark plugs(not put in right or not gapped right)
coils(common problem in the 03's but I had one start to go bad at around 18k in my '04)
recitifer(more common in the 99-02's)
throttle position sensor (tps)

all are easy fixes, look on r6messagenet too, let us know how it goes if you take it to that shop


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August 30, 2006, 02:40 PM

Thanks for all those who replied. I got more responses on here then on R6messagenet.
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August 30, 2006, 02:44 PM

I could be way off but what about valve adjustment? If you run your bike at 12K rpm on up for an extended period of time I would imagine that you'd need to get your valves adjusted...long shot but something to consider.

But your problem sounds like "spark" or timing so no codes tells me the ECU should be ok...enough people have R6's that you should be able to swap an ECU out.

As R6hokie said...plugs and coils would be good ones to check as well.


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August 30, 2006, 07:33 PM

sounds like a plug or bad coil---coils
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