jon andersson

Probably gunk in the injector. You can remove the injector by unscrewing from the top. It's difficult and you need a flexible screwdriver with the correct bit. If you cant or give up you have to unfasten the throttle body and take it out on the right side.
Whatever way you do it dont use the two phillips screws when you install the injector! On the throttle body's right side there is a plastic cover with two allen bolts. Change out them to the two phillips and use the allen bolts for the injector! That way you will have an easier job removing the injector in the future as you can use a 3mm allen key with a round end

Carsten

Hi, i learnt from fellows here in germany to be very carefull which rubber hose you are using in the tank to avoid cloging the filter after some years. there are hoses availble suitable for in/under fuel operation, they are different from the normal fuel hoses you are using outside. dont know why. also learnt that the piaggio vespa 300 and ducati using the same fuel pumps. so maybe a worthwhile check at your local dealer.

kiwiberger

Are the screws Phillips or Pozi?

kiwiberger

Thanks Carsten, I have pretty much came to the same conclusion.. unfortunately I wish I had known this a few years ago!

jon andersson

Phillips.

kiwiberger

Thanks ended up buying a new impact driver, and got the little rascal out, assuming there is no filter inside??.. I guess its just a replacement job? best place to buy a replacement injector?
Its a Keihin and marked K WF04 .. tried googling that partnumber but nothing found.

Alan

KTM 750 41 023 144

Husaberg, KTM and possibly Husqvarna.

Alan

List of all the bikes this injector fits.

Bunbury KTM Suzuki - KTM INJECTOR KIT CPL. (750 41 023 144)

jon andersson

Open the injector with a 9V battery. Blow compressed air against flow direction to clean it up. Worth a try as it will cost you nothing.

kiwiberger

Interesting it doesnt list my MY 2009 HFE250?