so I was driving it and suddently it dies, i thought the gas tank was empty so i filled it back up and after that i could drive about 1 kilometer then it died again and started smoking like crazy, (ALOT OF SMOKE!) then it stopped smoking after a while and ran good again until i drove it home so about another 1 kilometers, and just a little before I got home it died again and after that it barely starts, it will start but dies as soon as u touch throttle, and sometimes it backfires alot when trying to start. here is a video to better show what happens.
also the fuel pump relay broke for some reason so I got the pump jumped with a wire, but this couldn't be causing this issue though could it?

 

you're only running on 2 or 3 cylinders. what spark plugs are you running? with my f3, i had better luck with the regular NGK plugs, over the NGK iridiums.

 

I have denso U27FER9 plugs in it, gonna go pick up new NGK's today and see what happens

 

Fuel pump on an F3 shouldn't matter unless you're riding @ wot. Check your coils too.

 

Replaced plugs, runs fine when it gets above 5000rpm doesnt smoke at all, but when letting go off throttle theres alot of smoke coming from the exhaust and it doesnt really run well at all before you hit 5000rpm heres a small video of just revving it

 

do you have a multimeter? if not buy one and check the resistance of your coils and plug wires. it seems that its still dropping a cylinder when you rev it. has it been jetted? pull the plugs back out and see what they look like. it might be running way too rich.

 

And what tail is that?

 

I'm no mechanic at all but here's a few of my thoughts after watching your vidz.
Obviously it's not firing as it should but that "smoke" ?
You have unburnt fuel causing the backfire but is the cause of the smoke oil or water.
You seem to be able to keep turning her over trying to get her to start but could there be a compression issue here.
Told you I was no mechanic
Jeez just watched again and now above seems weak.
Best of luck sorting mate

 

In the last video you posted, there is lots of white "smoke" in your exhaust. This could be an indication of a leaky head gasket and coolant is getting into the combustion camber. If the bike was being turned on for the first time of the day and wasn't up to operating temp, then this is normal. The best way to check this is with a leakdown test because it lets you know where the leak is by air leaking into the coolant (head gasket), leaking into the crank case (rings), or it can leak past a valve(s) (valve & valve seat). If this isn't available, then the compression test is next best which will let you now that a cylinder or cylinder is not holding compression.
Also, what do your current plugs look like? Here is a link to read your plugs (https://www.ngksparkplugs.com/about-...d-a-spark-plug). This will help in diagnosing the problem.

 

He man,

Start with disassembling your carburetor. I think your jets are dirty.
Work very carefully and in a striaght order. Write everything down, and count the amount of the air screw. don't mess with that one.
Clean it and use needles to open the jets.

did it not run for a long time? -> Gasoline gets old, and the substance in the gasoline (don't know the addition in english) gets stuck in your jets.


I just did this:
https://cbrforum.com/forum/cbr-600f3...roblem-155919/