05 R6, loss of power and keeps low deep sound into higher RPMs.?

Question

I've got an 05 R6, I went to the lake yesterday and parked kinda in the woods. On the ride home my bike felt like it had a loss of power and kept a low deep noise instead of getting the higher pitched reving sounds of higher RPMs. I've stalled it twice today and yesterday, not once ever before. It also normally gets a boost of power at 5k RPMs but now it doesn't, just continues up slowly with less power. Sometimes it would feel/sound normal for a split second but then go back.

Its an 05 R6 with a 06+ short can with the baffles removed. It almost feels/sounds like a chipmunk crawled up my exhaust and is stuck in a head pipe. Ha, I looked in but don't see anything.

This is what it sounded like normally:

http://www.youtube.com/watch?v=erlXH-tUMqY

Now it sounds baffled and deeper into the higher RPMs (I can get a video tomorrow so you can hear it now if that helps).

What could be going on? What can I check and how? Any help is appreciated!

Answer 1

Maybe something crawled up in there somehow. If it was fine on the way to the lake and jacked up on the way back, then something is foul. Where there any friends at the lake who may have been jealous of your bike and tinkered with something?

Do a visual inspection, there may be a twig or something effecting the throttle cable. i don't know this is a weird one.

Answer 2

Thats definitely not  running on all cylinders.

Sounds like a dead spark plug,,,or other ignition fault.

Or a dead injector

..................................

When it's COLD,,,try feeling each ehxaust header right at the engine immediately after starting it.

Normally they get hot Quick,,

a "cold" one is the dead cylinder.

Or You can disconnect the injectors 1 at a time an see which one "makes no difference",,,indicating the dead cylinder

Check that cylinder's spark plug,,,see how it looks.

See if it sparks,,,and smell it for fuel.

If it's fairly normal looking,,clean,dry,,,and firing,,

You may not be getting fuel  to that cyl

It gets too complicated to detail here.

Time to get out shop Manual and go thru their troubleshoot procedure.

It may be as simple as a corroded connector

It's Running,,so unlikely to be anything terrible.

??????????????????

EDIT:

Something bothered me 'bout your question,,,didnt dawn on me immediately.

Did You leave your bike unattended for even a few minutes?

Anybody else around who Possibly could have tampered with it?

If it was running normal when you got to lake & shut it down,,,,,,

Then "On the ride home my bike felt like it had a loss of power "

Did that happen IMMEDIATELY ,,,soon as You started it??

Or did it run Fine a few miles,,,then began misbehaving  down the road?

Thought occurred to me,,,

Someone MIGHT have tampered with it.

Like,,,pulled a "Plug Wire" loose,,,

or an injector connector.

That Could possibly account for it trying to act normal momentarily,,,

if the connector makes intermittent contact.

Just a thought,

people DO that kinda c**p for FUN.

Make sure the connectors are plugged in snug on the Plug/Coil gizmo ,,and the injectors.

Might be worth verifying the plugs are connected right,,firing order-wise.

Same for the nozzles.

But really,,,if they'd  been swapped around for even "More Big Fun",,,,

it wouldn't act right sometimes,,,not even Try to.

Sounds suspicious to me.

But just as easily just a coincidental failure/fault somewhere.