Grrrrrrrrrrrrrrrr - I'm about to torch the bloody thing :flame:
It STILL won't start despite lots of messing about with pumps and pipes!
Basically it wasn't just the union going into the lift pump but the threads were fubar'd and it was leaking. My local Landy specialist didn't have a used pump so I had to buy and fit a whole new lift pump which I did without too much trouble.
I then filled the fuel tank with a jerry can's worth of extra fuel (so now over 1/2 a tank) and pressurised it from the fuel filler using a rag and compressor. Fuel then came out of the disconnected fuel pipe that goes into the lift pump which was then secured and I hand primed the pump until it came out of the lift pump outlet. All pipes were then secured back on again and bled as people have said above. I tried to start it and eventually it did fire up for a few seconds but then died. This happened a couple of times until the battery (and then booster battery) died on me.
I put the batteries on charge again overnight thinking it would be fine with strong batteries today but nope. I didn't even get a fire out of the bloody thing today
Help!!! Any suggestions????? All I can think to do now is to replace ALL the fuel lines/connectors with new ones as I "think" air must be getting in somewhere. It is either that or pay someone that knows what they're doing to come have a look at it which is now becoming a possibility!
I'm definitely wishing I'd just left the fuel filter alone now
Cheers
Richard