Check the filter/housing for vacuum leaks where air can be sucked in.
Remove the housing cap and check there's a good amount of fuel actually in the filter housing and look for metal swarf in the bottom of the filter bowl.
If there's none then it's back to the above for leaks or faulty non return valve.
It just sounds like there's little or no fuel in the filter.
Posted on Tuesday 8th of November 2016Don't understand this? Ask a question