CBRWorld.net

Posted on cbrforum but i thought i would double tap it here, or controlled pairs if you're PC.

I have been having this recent problem where my bike will bog down on me and die.  It first started about a month ago while i was on the highway going around 70 in 6th and all of a sudden the bike started to bog down on me and then eventually I would loose all throttle even though I had the throttle pegged.  About 10-15 seconds of coasting later the bike picked back up and went on as if nothing happened.

Since then I brought it to the dealership to get a carb sync to solve some engine knocking from a potential lazy cylinder.  The knocking went away after the sync but now it seems the bogging problem is even worse.  The bike will run fine for a while but out of nowhere it will start to bog as I describe before when I am riding around and it will come to an eventual stall, which happened at stop lights and stop signs.  It seems that the idle is very unstable at times.  I took it back to the dealership and they couldnt find anything wrong with it, other than the battery is discharging at 1500 rpms when the fan kicks on.

To try and remedy the problem myself, I drained the tank, filled her back up with high test and through some dry gas in there in case there was some bad gas/water in there.

I cleaned out my air filter, and checked out my charging system using abads guide here: http://cbrworld.net/forums/thread/140473.aspx and everything checked out.

Can any think of what could be the problem?  Its not the coils, I dont think its the jets, or the plugs.  I am stumped.

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'98 F3 Desert Storm, Yosh RS-3 Slip-On

I have a few ideas. It could be your fuel filter, your spark plugs, or your air solenoid valve might be unplugged. It could also be your fuel pump going out, or the fuel pump relay.

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96 F3, 98 motor, Vanes and Hines headers and mid pipe with cut Yoshi can, K&N filter, Stage 1 Dyno Jet Kit, dirtbike shifter to eliminate linkage and reverse it as well, naked with racing 905 stunt cage and 12 bar, hand brake, Goodridge kevlar lines in front with 2007 GSX-R radial master cylinder

I had an engine that would do the same thing to me and it was fual related.  I think you are on the right track by looking at it from that end.  With that engine it turned out to be a plugged fual filter.  Start there since it is cheap and pretty easy.

Turned out to be the fuel filter.  I had been using a universal phram filter in there for a year now, dont know if that had anything to do with it.  I went to the store and got another one of the same filter and it runs fine.  I also opened up the fuel pump and poked around in there to make sure everything looked good, as well as made sure the petcock and overflow/vent tubes wernt clogged.  I have since ordered an oem fuel filter to put in there so I wont have to worry about it in the future.

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'98 F3 Desert Storm, Yosh RS-3 Slip-On