I just double checked my shop manual and an F2 &stock should be running 4 #135 in the mains. Unless someone did some weird stuff to your air box causing more air to flow into those 2 intakes then that could be your problem. Then again, I know nothing about pro tuning, I just know how to make a normal bike run normal ^_^. I am not even sure if you are running an F2, but I don't know any bike that runs different jets in different carbs.

This is good advice... If you want to find out if something is not working right on your bike, first you return it to stock. You find out real quick that "upgrades" are usually crap or done wrong. A mechanic taking 1 hour to install an aftermarket jet kit with your new slip on and K&N will not do better than Honda engineers that spend years perfecting these things.

 

I have a 95 f3. Will double check the microfiche to see what jets a supposed to be in there. I have been returning her to stock. Though this might explain her running rich. But I don't think its causing the no power. Seems fuel related definitely but across all gears has me leaning towards fuel cutoff relay (tested the pump and continuity) or the throttle getting stuck in the carbs. Gonna jumper the relay after work today.

 

I only did what the write up said to do, there is no reason for me to take apart every carb individually.

I am pretty sure I have stock jets, I have 135's and I cant remember the other number that is on one of the jets. I have it written down. I have a 2 brothers slip on, woudn't that call for a K & N???

 

slipons don't do much other than make noise.

Kuroshio, running rich can most definitely cause no power and stalls. you foul your plugs, they misfire, then you stall.

 

So is there any plus to me having a K&N? I realize it makes more air but I shouldn't need more air with a stock jet kit should I?

 

Ok I think I figured both the stalling and the running rich out. Give me a little verification if you don't mind:

Running rich:
Checked the microfiche at RonAyers.com and my Haynes manual. Stock main jets are 135 & 138 (yes, 2 different sized jets) for the F3. 1 & 4 get 135, 2 & 3 get 138 for the 95 CBR F3 S (non-California / UK).

Hesitation at high RPM:
Fuel pump probably (with intermittent short possible). Went back and rechecked the fuel cutoff relay with the voltmeter. Bike running: 13v on black / white (don't ask) wire and ground. Continuity between black / blue and ground. Jumpered black & black / blue wire I get interesting results. When first done and the ignition switch turned on (but bike not running), rapid hum and beat from the fuel pump. When the bike is started, slower beat from fuel pump... until I turn off the bike. When I turn the ignition back on, nothing from the fuel pump. When I start the bike, nothing from the fuel pump.

From my understanding, at high RPM gravity fed fuel can't keep fuel in the floats fast enough. Enter the fuel pump. In my particular problem with the fuel pump malfunctioning, the bike starves for fuel until the RPMs drop and the floats can refill. Power loss.

Before I go buying a new fuel pump and jets, sound good?

 

It's cleanable and you can reuse it. Normally they should give more air flow, but many say the dyno proves otherwise at least for our model. That is about the only reason you want one.

 

Its good you double checked the jets, I guess F3 jetting is different.

Sorry,but having an F2 means I have no pump so I am not very familiar with that particular issue. There are others here who can answer that better.

 

Lol well no worries bout the fuel pump. I used your sticky to tear into my carbs (getting the throttle cables off = easy. getting them back on = couple decades in purgatory for all the curses I spit). So I figured I'd come to the source for help.

 

Lol, sucks doesn't it? Of all the things I have worked on my with my bike, that is the only thing I dread. I think changing tires is less frustrating then messing with those damn cables.