Air bubbles rising up towards carb

[djhammy]

HI guys in my quest to solve my fuel problem i have now replaced all fuel hose baclk to the tank apart from the hard plastic ones. Guess they will be next but wondered if the following scenario rings any bells.

I have just stopped after a short drive and noticed air bubbles rising up the fuel line towards the carb. It has been going on for the past 15 minutes now. I have a clear fuel filter either side of the pump and its happening in both.

Cheers.

Dave

[NicBeeee]

Hi Dave

Have you managed to do what Kev suggested and put a non return valve in yet, it will let you decipher were the problem is coming from, tank side or carb side

Nick

[djhammy]

HI Nick i haven't yet as a fuel filter is a non return valve? Tried that but didn't work.

Sounds like kevs non return valve didn't help either.

[kevtherev]

My fuel filter works both ways.
can you suck and blow through it?

perhaps you use your primer and pull fuel through until the air stops coming through?

[djhammy]

HI kev you are right

just checked and i can suck and blow either side of the fuel filter. (sounding like some dodgy porn film here )

The primer does that and i did leave it in line and it made it easy to get going again but the rubber went hard (sorry lol) i guess the petrol does that and made it hard to pump.

I will fit a non return valve

[Ian Hulley]

You should only have 1 fuel filter, inline straight after the petrol tank on the offside. The hard plastic petrol pipes are almost always absolutely fine, made for purpose, the rubber fuel hose does deteriorate over time of course.

Ian