Gareth,
The cut off solenoid stops fuel at the input to the pump. If it's
closed it won't let any fuel in. If John has said the engine would
start but die soon afterwards, I don't think the solenoid is invlved,
unless it opens only half way.
I think the general idea was that if it's something within John's
remit, like the fuel filter, obvious pipe blockages or suchlike, he
should be able to fix it himself. When dismantling the injection pump,
there are quite a few things that can go wrong and only complicate
matters even further.
BTW, under the solenoid there's a tiny filter. There's a very small
chance it could get clogged, so it too is best left for a diesel
specialist.
And the last thing, did I uderstand correctly that when the fuel
pressure lines were "cracked" it was only by loosening the rigind fuel
pipe nut, not the injector clamp ?
--
Rgds,
Roman (London, UK)
'92 HDJ80