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Old 01-26-2009, 01:58 AM   #21
mikes-si
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lucky man, be glad it doesnt sound major at all!
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Old 01-26-2009, 02:28 AM   #22
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sounds like the exhaust servo motor is stuck in a close position.
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Old 01-26-2009, 05:46 AM   #23
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I had my bike sound just like a vtwin and lose all sorts of power. Ended up being a coil popped off of the spark plug just enough to not make a connection. Sounds like it was running on 3 cylinders like someone mentioned earlier. I would check the spark plugs, the connections, and make sure to measure the impedance of the coils with a multimeter to see if they are to spec.
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Old 01-26-2009, 06:27 AM   #24
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probably the PC3. those things are junk.....
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Old 01-26-2009, 10:20 AM   #25
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Ive had some I-4 sound like that before. They were low low on gas.
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Old 01-26-2009, 10:56 AM   #26
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check plugs(pull wires off and see if engine sound changes)

also check injectors.
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Old 01-26-2009, 10:58 AM   #27
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what side of town are you on?
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Old 01-26-2009, 11:26 AM   #28
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Quote:
Originally Posted by 1FastMF View Post
Someone correct me if I'm wrong but suzuki's don't hold codes in memory..they can only read the code if it is currently showing it...unlike Honda's And correct me if I'm further wrong but Honda's also hold all your riding characteristics....ie top speed, rpm, acceleration etc
I will correct you, you are wrong, lol. The newer suzukis do hold a code you just have to hook them up Suzuki HDS.
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Old 01-26-2009, 08:50 PM   #29
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Quote:
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what side of town are you on?
Im in Katy. The dealership here charges up the wahoo. I rode the bike to school today and it ran fine. I didnt gun it but my FI randomly came on again. After I shut it off and restarted it, the light disappeared. I hate that feeling like I cant trust my bike!
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Old 01-26-2009, 09:41 PM   #30
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How does it sound at low rpm. It sounds like you lost a cylinder. Maybe a sparkplug or injector or coil. Warm the bike up then take a wet papertowel and touch it to each header pipe they should all hiss whenever the papertowel touches. If one doesn't then its not running on that cylinder.
And the FI light is there for a reason < it will tell you the problem
Very smart. I like it!
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Old 01-26-2009, 09:52 PM   #31
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User is banned

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Old 01-26-2009, 10:29 PM   #32
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Must be after the 06 model yr ???
No they have had it on there longer then that. Just did not let you know. I believe the first yr they had it was 04. Diff bikes started getting it in diff years.
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Old 01-26-2009, 10:46 PM   #33
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Glad its going to be Ok without major mechanical issue.

With good oil and coolant and not over reving, or reving hard in nuetral, or operating with a warning light on, a mechanical failure should be very rare.

However these new engines have a lot of electronics to them.
An 08 Busa service manual has some 120 pages of I guess close to 400 pages, dedicated to Engine General Information and Diagnostics and almost all of this section is related to electonics, and codes.

I would bet your bikes service manual is similar.

The informaiton is well beyond your shade tree machanic stuff and I would guess quite likely beyond some shops capabilities.

Buy your service manual probably $ 100
Read the applicable section and you will have a better understanding.
Might just keep you from worring should there be a next time.

Beside its kind of intersting reading.
If you are a fair mechanic it details how to set the valves, something likely coming up since your at 15K miles

This is probably just some sensor going out or connection issue as mentioned by others , or maybe it got soaking wet somehow.

Hope you get a good shop.

Good Luck
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Old 01-26-2009, 11:04 PM   #34
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Your FI light will turn on anytime there is unburnt gas in the exhaust. If a coil or spark plug cap isn't functioning there is unburnt gas and and FI light on. I think just having the shop that installed the PCIII check for tight electrical connections, both on the PCIII and your coils and other undertank connectors, will probably solve this. I'd only do the maintenance required by your manufacturer's specs. You're more likely to screw things up further and get further into the dark. I've not had to change a single plug on any bike since FI became the norm.

Try running a mild chemtool B12 mix thru a tank of gas to rule out dirty injectors.

Also, any 4 cylinder running on less than 4 will knock to some extent if one cylinder is not firing. Some worse than others. In higher mileage bikes it's play in the clutch hub resonating out. It can sound really bad, even when everything on the inside of the motor is fine.
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Old 01-29-2009, 10:39 AM   #35
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Today I rode the bike to work again with plenty of gas and NO FI light on. I thought the bike was going to be fine... wrong... I came out of a turn in first gear and punched it. As soon as the revs got higher my FI light came on and i lost half the power again with that "v-twin" sound... BUT the only difference from last time was that the bike operated normal after I let the throttle off. The FI light remained on though.

Im going to a shop for sure tommorow to get this checked. Man i hope this isn't a major problem to fix.
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Old 01-30-2009, 07:38 PM   #36
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After going to multiple shops and getting a few bits of information... I returned home and replaced my spark plugs for the of it... i look to inspect the harnesses off each injector from the Power Commander... ONE was NOT connected... I plugged that up with joy! Ran the bike around... performance was AWESOME!
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Old 01-30-2009, 08:27 PM   #37
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Looks like most people were correct.... you were basically running on 3 cyls. Glad to see you got it fixed.
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