Hey all. I'm new to this forum and I'm hoping some of you have more bike smarts than me (wouldn't be too hard). Just took my 95 CBR600F3 out of storage on Saturday and went for a ride. Took her to the local pump and filled her up with 91 Octane. As I'm booting along HWY 404, I gave her a fistfull of throttle and she starting complaining. Lack of power, and some sputtering is what I got. At first I thought bad gas. Felt like the fuel/air mixture was off or a cylinder not firing right.In neutral she'll rev right up there with no complaints with all throttle positions (moderate, medium and aggressive). In any gear, she'll also rev right up there (as long as it'sdone with moderate or mediumthrottle positioning), but wack her open in any gear and the trouble begins. What could this be? Inition, wiring, ECM, carbs? I'd appreciate any ideas or similar experiences. Don't want to take her to the dealership and get hosed. This is the 1st time in 13 riding seasons that anything has gone wrong. She's been a great ride and I plan on keeping her forever. There's 39,000 KM on the dial.

 

Sounds like the needles are junked up. I'm take them off and clean them. I think you can soak them in sea foam(?) Don't quote me on that but that would be my best quess.

 

Try slowly going to WOT rather than just hammering it. i.e. instead of snapping the throttle open, take 1-2 seconds to get there and see if it does the same thing. Mine does the same thing as yours when I snap it to WOT but its only every so often and its just that the carbs are dirty from storage. If I go to WOT slower, or just hold the WOT, it will kick right through it in a few milliseconds.

Edit: yah my advice, run 1 can of seafoam through the tank, and next tank, spray some seafoam deep creep in the vacum lines as it reccomends. Probably wouldnt hurt to synch your carbs while you're at it.

 

Thanks for the re[lies. If I go to WOT at slow or medium, there is no problem. It only seems to happen when I snap it open. Haven't tried holding it there, because I was afraid of what I might be doing to it. I'll give it a shot on the way home from work today. Sea Foam? Is that some sort of carb cleaner?

 

You can get Seafoam at Autozone. Its a cleaner but not a spray can you pour it in with your fuel. Old school method is a shot of marvel's or tranny fluid through the carbs.

 

Seafoam "deep creep" is a spray that you spray in the vaccum lines, normal seafoam you put in the tank.

 

Seafoam is a magical, mystery liquid that uses tiny gnomes to spirit away dirt and gunk in your fuel system. You can also use it in the crankcase for 100 miles or so before an oil change to really clean her out!

 

Well, they don't sell this stuff up here in Canada, so a buddy and I took a nice bike ride down to the American side of Niagara. I bought up a few bottles of the stuff, and I just put in about 1 ounce per gallon to the tank. I took her for a ride (60km or 40mls). Nothing yet. I'm guessing I may have to get her out for a really good ride. Any idea on how long before I can consider other options? 1 tank full? 2 tanks? 3?

 

with seafoam.. i havent seen a difference in adding it to the gas except a tad better throttle response(i have fuel injection, not carbs) but if you get the spray can sea foam and spray it in the nooks and crannys of the carbs and give them a good soaking, they should clean up a bit and break down any build up thats inside the carbs.

 

I think you're reffering to the "Deep Creep" spray version, which unfortunately Autozone did not carry. I'm keeping my fingers crossed that the gas add stuff will do it. If not, I guess I'll have the carbs removed and have them soaked, re-calibrated and re-installed. After that, it gets scarey. Throttle Position Sensor, ECM (or ECU), RAM air gadgetry. There are so many possibilities.