1997 T4 wouldn't start??? Again
 

So

I've been struggling to start the T4, the starter motor turns and it turns over but for 1/2 a second then cuts out. It does this until the batterys flat. It does it less with a full tank.

Anyway I've replaced the fuel pump with a walbro gs like is recommended on here.

It's running so much better and is a flying machine again but it still struggles to start every now and again...

Any thoughts

So I've searched everywhere but don't seem to be able to come up with an answer. Could it be the relay (ECC) ? It's my daily drive so could do with some help, if anyone has any ideas please help??? Cheers all