First of all guys I would like to say hi to everyone being it is my first post on here .
This is my first CBR as well , used to ride R1.s then went to nakeds and for the last 6 years I have been riding a Triumph Bonneville . I really wanted another bike as I was racking the miles up on the T100 and this CBR came along at a reasonable price so I took the plunge .
Bike had been standing really or 9 years so was a risk but it is up and running and I got a chance to ride it at the weekend . really suprised how well it goes to be honest , lovely handling although i suspect rear shock is past it's best .
Anyway back to problem , it runs smooth except around 5-7k where it doesnt seem to want to pick up smartly , drop a gear or keep it pinned and it get past 7 and fly .
I have read a few threads where people have had similar problems so i thank everyone who puts the time in to post their thought and tests .
i have been through the normal DAI checks , carbs cleaned , plugs changed .air filter replaced etc , nothing looked untoward .
But I checked the fuel pump and the delivery was quite poor .
Going off the manual you link to I ound I had a 12v supply to the fuel cut off relay but the supply to pump was only 6v . When I bypassed the relay the pump was working perfectly . Checking the wiring I found the blue /yellow wire to relay wasn't giving a 12v negative supply as it should and tracing it back it come from the ecu and splits to 2/3 coil as well . What i found was the coil wires had been put on wrong , the yellow/blue needs to go to the black terminal on the coil , not the green . Swapped the over and voila , full fuel delivery . Havent tested it yet as I am waiting for a new fuel filter but am pretty sure it will be sorted . I hope this gives anyone a route to take if they are having similar problems , pay it forward

 

Hey, good job tracking that down! Hopefully that takes care of mid-range issues. Wouldn't hurt to put some PEA-based fuel-system cleaner into tank (way, way better than Seafoam):

- Red Line SI-1
- Techron Concentrate Plus
- 3M Max Strength Fuel System Cleaner #08814
- Royal Purple Max Atomizer 18000
- Gumout All-in-One (might be off list soon due to lowering amounts of PEA)

 

Welcome to the forum Paul, good find and fingers crossed its sorted.
Lets see some pics of the new bike.

 

Thanks guys , will post a pic up when i get it back together . I am just waiting for the fuel filter to arrive and then get it out for a test ride .
Sorry about grammar on first post, I was using my old laptop and the keys are hit and miss if they are going to work , and it was late on and i just wanted to get the first post finished .
Got to say though I don't know why I have never considered a CBR600 before , they are well made and perfectly quick enough for the road , barring the odd broken lug and scratches here and there , it's fared quite well for a 26 year old bike .
I did own a CBR600RR3 race bike a few years ago for track days , and it was well sorted (122rwhp , Ohlins ,20mm cartridge forks , sigma slipper clutch , Akra Evo system, HRC cams , bellmouths , ecu etc , just thousands spent ,Scottish championship winning bike ). Unfortunately I only used it for one track day as I had a major health issue which stopped me driving/riding for over a year and I stupidly sold it , I should have really just kept hold of it . Hindsight a wonderful thing .
CBR600RR for me is too extreme for the road , if you are on it they are great but I wouldn't want one for steady away riding , as much as I wouldn't want another R1 for the same reason . The F3 is nowhere near as extreme riding position , positively armchair comfy in comparison

 

The F3 as you have said is a great bike, had mine for seven years before getting an F5 (2005 F4i) and that and its successors are more of a bike than I will ever be a rider and fast enough to embarrass nearly everything on the roads and legal and slightly less than legal speeds.

 

To be honest I would have preferred an injection bike , basically because you really need to run the F3 on E5 Super , whereas the F4i should be ok on E10 . I have the same problem with my Triumph with it being carbs . I couldn't knock the price for the bike though , so a small price to pay . IIRC the F4i has a bit more power and maybe a better chassis and suspension , sounds like enough for all but the most extreme road riding tbh .

 

Well that was a bad call . I put the bike together and tried the pump and it doesn't prime with just the ignition on , strangely enough the other day it did exactly that with the blue/yellow coil lead disconnected on the 2/3 coil . Obviously have done a bit of reading and the bike needs to be turning for the fuel relay to engage the pump ,it runs off the trigger wire side of the coil . so in actual fact the coil WAS connected properly with the blue/yellow on the green pin of the coil pack . I have tried the bike with the fuel relay bypassed and normal , and the pulses from the pump seem pretty close so I have to assume the relay is ok . Will give it a try tomorrow and see if anything has changed ,I have fitted a new fuel filter so maybe that might make a difference . Bike is unmolested and lowish miles (16k) so I dont think anything has been altered to make it run badly , the only non standard part is the complete exhaust including downpipes . Maybe it needs jetting to suit that , will keep you posted

 

Some people hook up manual switch to prime pump for emergencies. Can overheat pump if left on, so be careful.
There is also solid-state upgrade to replace clicker at bottom of pump. Really makes pump much, much more reliable.

 

I'll will take that in mind , thanks . Tried the bike and it does seem to be running much better , why I am not sure . Maybe the fuel filter or possibly a dry connection on the wiring that I have remedied just by plugging and unplugging parts. I really need to get it out on a longer ride to really know ,which will be the weekend .

My CBR

My T100

Greeves/Triumph I have just finished

 

That workshop floor has stories to tell!