relay van start up

[topmixer]

hi iam going insane trying too find a prob with my relay 2.5 diesel ,i have aleaky injector which im going too replace ,but the problem is that after vehicle has been left fro 4 or 5 hours it is very hard too keep running from start up , ie turns over and when you drive off as soon as you get 3 or 400 yards it dies as tho its strugglin for fuel .i then turn it over again repating this 3 o5 times before i actually get it on a run then it heats up and away i go .now if i stop fro say an hour and then start up no probs as previous but as soon as i leave it for a longer period ,prob starts again . it seems as if the fuel in pump drains completly back intoo tank . now i know that i could change pump!!! very expensive ,but if it was knackered would i really still be able too drive as i do all day at 70 mph etc no prob ,any advice on this matter is going too be greatly appeciated as too avoid unnecersary garage costs. [V]

[JohnD]

My guess would be that you're getting air into the fuel system. Before starting, squeeze the hand primer several times.

[topmixer]

hi yes i was told i may have a tiny air leak so thats what i tried but it still does same thing ,also told that when using hand pump it should stay pumped up but it doesnt and drops back ??? i have ordered a new return valve from Citroen dealer for pump hoping that might cure ut[?]

[jeremy]

What type of pump do you have? If its a Bosch air can get in through the injector leakoff pipes - but not on Roto-Diesel.
Why not change the last bit of pipe to the pump to clear plastic - and watch the bubbles !
jeremy

[topmixer]

not sure what pump it is at mo its on a2000 w plate , i will try that clear pipe thing ,one thing i find is that when i do eventually get it up and running sometimes after a good few milkes when i dip clutch too brake etc the revs drop right out then in again from 10 rpm too o very erratic

[jeremy]

Sorry - thought we were talking about an XUD with a mechanical pump.
jeremy