what else could my problem be...?

[obrut429]

HI All,

I recently bought Kevin's Storm project from Durham and have swapped in another engine. There are new fuel lines in place and fuel hoses.
Before I began doing anymore work on the car I wanted to check the spare engine I had was at least functional - however, when I cam to try to start the car I am getting no fuel out of the injectors. the fuel pump does run fine and pressurize the system - with fuel getting to the fifth injector (which doesn't seem to be firing - but thats another problem!). When I lift the sensor plate and the fuel pump on - still no fuel from the injectors. Spark is OK.
So - I'm thinking I may have either/all:

1) Constricted new fuel supply line... but seems unlikely
2) Insufficient fuel pressure to the injectors ...need to check supply with a fuel injector removed and fuel delivery quantity as per Haynes
3) Faulty fuel mixture unit
4) Stuck mixture unit plunger ..but it feels OK and has smooth travel

Before I removed the old engine - it did run albeit terribly - so fuel was being received into the combustion chambers then.

Anything else I may have missed?
Thanks
IAn
(Oh and the waterpump leaks and I think the engine has a problem elsewhere too - but none of these issues should affect the above problem...!)

[vr_powered]

Warm up regulator? controls fuel pressure and has a gauze filter which can get clogged up with rubbish, in fact i would be inclined to remove each banjo bolt one at a time and check the gauze filters as there are a number in the system (in the fuel dizzy) which by now if never touched before have probably caught a fair bit of rubbish

[bensspares]

Might be realy daft here but are you sure the flow and return lines are the correct way round....same with the feul filter

Either
all 4 injectors nfu,
no feul in tank,
blocked filter,
f.p.relay nfu

disregard the w.u.r as this only effect mixture.

[bald rob]

hi ,i've got very similar problem mate!
i traced mine to low fuel pressure in the return line from the W.U.R,
this means that the bi-metallic strip and/or heater isn't working or at least
working well enough to give correct fuel pressure back through the metering head
to the 4 main injectors.
i got stuck with this problem for ages,but managed to have chat with a VW trained technician.
worked for me,hope it helps you to mate

[obrut429]

Thanks for the replies - at the moment I've backtracked the problem to the fuel pump and/or a blockage from the tank to the pump - as the pump delivers zero fuel to the mixture unit. Will remove the sender unit this evening for a nosey...

[bensspares]

Sounds like youve found the issue, blocked filter or pick up, hows that filler neck !!!!

[obrut429]

ermm.. technical term I think is....crap.

[bensspares]

sounds like you have the answer. its normaly something simple that causes the most greif.