Injector Nailing

[poddack]

I have just had a few weeks of occasional very loud injector nailing on my Puglet, here comes the sewing machine.
Squeezing the bulb sorts this out for the rest of the journey only for it to return next time.
Replacing the bulb, filter bowl and associated pipework sorted this out.
From where the bubbles of air were appearing i guess all I had was a broken O-ring under the filter bowl.