KR-1S.co.uk Forum

Hi All nearly happy new year, right got the beast fired up the other day but will not run off choke, does for a while but when i go to rev it just dies, they are tuned barrels but to what stage i don't know, ive even tried a set of pwk 28's made by oko quality went out the window there, but thought it was worth a try but did exactly the same, haven't checked reeds but i also have in place the plasic block thing on the intake manifold will i need to take this out as they are tuned barrels or what does it do, so any ideas will be welcome i'm off to check reeds and make sure the kips f1 or 2 or 3 or is it 4 valves are set right but i'm sure they are cheers wayne.

Hi Wayne
Do you know what jets the tuned barrels were running on? Or could you ask whoever you got them from?
Cheers
Bernie

well funny that really i got them off martin but iv'e got the carbs that run with the barrels so i don't get the problem perhaps they have got to be set dead right as i have had them striped cheers bernie i'll check what jets they are

Hi Wayne,
Strip and clean the carbs, take out the main jets and the housing as silt accumulates.
If it was running with them previously it will only be something minor.
Do you have an ultrasonic tank? As it is so much easier with one.
I am looking for one in the sales now as mine died.
Cheers
Bernie

is it me whats an ultrasonic tank cheers

Sounds like a fueling problem Wayne, but it could be anything, so I'll start with a few questions.

Have you had the flywheel off?

Have you checked the jets are clean?

Are you running the vaccum feed on the fuel tap?

hi luders yes the fly whell was off just rebuilt the engine, the carbs where all cleaned prior to putting them back on but going to re check and yes the vacum is connected cheers wayne.

Keep us all posted with your progress Wayne.

will do bernie

Do you get the problem when the fuel tap is at the prime position?

both luders but i have just raised the needle to its last notch and i have a bit of sensible running seemed bloody good actually compred to what it was doing so where from here i ask, but sad to say thats the oko's but i'm going to put me k's back on after a clean then reset ait screw and needle to last setting and see what happens cheers.

Broken reed petal ?

Just noticed this question.

tescr500 wrote:i also have in place the plasic block thing on the intake manifold will i need to take this out as they are tuned barrels or what does it do

No leave them in, it directs the airflow through the reeds and into the crankcase.

You'll have to mess about with the carb setup a bit, like you say, the air screw settings.

I would be interested to know what your main and pilot jet sizes are and also what might be a silly question, but do you have the airbox fitted?

A few of us spent some time trying to troubleshoot a similar problem for someone on here once and it turned out he had no airbox fitted.

yes the air box is fitted i'll put the blocks back in but it is running ok at the mo but i will put them back in though as i didn't think that was the prob just a stab in the dark never tinkered with carbs quite so much but i'll keep you informed cheers all

I didn't think you would have left it off, but thought I would double check.

I was fairly annoyed on that previous occasion to find it wasn't even on the bike.