Starts and then stops ....why???

Please help if you can,

My Triple white cab' (1800 8v GTi), is being a pain in the butt.  It was stuttering ang stalling a few days ago, so we (Me and my Dad) thought that it might be a blockage in the fuel system,
(We'd replaced the, very rotten, fuel filler pipe a couple of months ago and knew that there was rust in the 'tank)
So we dropped the 'tank and cleaned that out thoroughly, cleaned the filters out as best we could, blew the 'lines etc…

But,

When we've put it all back together the engine wont start! or rather it will for a second or so and then dies.

We've checked the cold start injector and that's spraying fine,

However, there is NO spray from the injectors!  Fuel is… just about getting to them, but not through them, it seems as though there's no pressure but when we crack the fitting from the fuel filter to the metering head there's LOTS of presure (fuel spray everywhere)  There's just no fuel or very very little fuel coming out of the 4 oultlets on top of the metering unit.  

We're at a loss as to what to do now so, if you can, please help

Thanks

illy

quick update

now have fuel at the injector end but not coming out of the injector.

doesnt seem to be a great deal of pressure. When i raise the flap in the metering head fuel flows to the injector but not through it.

please help

thanks
illy

Have you jumpered the fuse box connections after removing the pump relay to make it run all the time whilst you lift the flap?

Seeing as you have had the lines in bits and tank off it may just be air locked and need bleeding. Crack open the injector/line joints until fuel is present.

Do Prolwler's injector test and report back your findings.

Sounds like system pressure is low - check for leaks and blockages

Cheers

Rich

we have now checked for blockages but doesnt seem to be any so we then changed the metering head and still wont start.

we are sticking by the fact that it is a pressure problem.

So we have been to buy a new filter and fuel pump so hopefully when we have fitted them it should start.

Thanks all for advice it helped loads.

will let you know what happens next.