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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: johnbrom on August 10, 2015, 11:24:04 AM

Title: K75RT Lots of Bubbling in the fuel tank when running??
Post by: johnbrom on August 10, 2015, 11:24:04 AM

Hi all,

My first query and request for help and it is,

On starting my K75rt I have noticed that there are lots of  bubbles being blown out of somewhere within the fuel  tank , I would think either from the rubber hoses or fuel pump. Would I be right or wrong that there should not be bubbles?. This happens all the time from cold through to warm with the engine running.

I look forward to your replies.

(The bike is a 1993 with only 22k miles and the fuel filter has never been changed if that makes any difference.)

thanks

Title: Re: K75RT Lots of Bubbling in the fuel tank when running??
Post by: Scott_ on August 10, 2015, 06:16:06 PM

It is possible that the fuel return line could be routed near to the bottom of the fuel pump pick-up screen(the early K's did this), or at least below the level of the fuel(this was a TSB modification on the 1100's that could easily have been done to yours), this returning fuel could be causing this bubbling that you are seeing.

Title: Re: K75RT Lots of Bubbling in the fuel tank when running??
Post by: johnbrom on August 11, 2015, 05:34:32 PM

Thanks for the reply but does that mean I have a problem or that all is ok as it is?

Ta