Air bubble in my fuel pipe, help please.

[Ashleypayne 0]

Any one help me please ?
Whenever I go out to start my bike up or go out for a ride after leaving it for a night there always seems be an air bubble in my fuel pipe and this wont let me start the bike. To start to bike I need to suck on the vacuum pipe from the Carb while someone kicks the engine over to get rid of the Air bubble and allow the fuel to start flowing in to the carb, however when the bike is left for around 5 hours not running the bike starts to get the air bubble back and I have no clue why.

Any one any ideas ?
Thanks.

[fr499y 0]

this on ya GTR 125? if so its down to the fuel pump. Went through 2 of these myself

[Ashleypayne 0]

Na on my little Gilera DNA 50 mate. Could it be the fuel pump on that ?

[Kenb 0]

Open the filler cap next time the bubble appears, see what happens.

[Kenb 0]

Leave the cap slightly open for 5/6 hours, again see what happens.

[Ashleypayne 0]

Okay, thanks mate will open to cap tomorrow morning as its to dark to see the fuel pipe now lol

[dick65 0]

@Kenb wrote:

Open the filler cap next time the bubble appears, see what happens.

[Ashleypayne 0]

Ive tried the filler cap idea, but it hasnt worked sad times. Think im gonna drain the fuel tank and see what that does

[fr499y 0]

just change the fuel line, could be a small pin prick in it