hi iv got a transit 2.4 di d2fb that we fitted an injection pump (vp30) about 1 month ago customer supplied , it has been brought in with a complaint of a loss of power and then when switched off wont start just turns over i have no codes and no engine lights on immoboliser light goes out but van just cranks give it a hint of easy start and it fires instant and idles perfect .
Being concerned about fuel quality i have ran this on a seperate fuel supply and seperate fuel filter and housing (new), once started (after bleeding fuel )the van ran and started on the key every time hot or cold probem solved or so i thought
Next mornig gives it a final try and starts up ok within a few seconds anyway still on my seperate fuel supply however when switched off non start and wont start nearly all day unless a easy start used, i have fuel up to the injectors if i open the pipes seems like plenty coming out too but when i attach an injector it does not fire the injector as if pressure not enough to open injector yet a hint of easy start and injector fires.
i am thinking that the easy start is giving a faster engine speed thus creating more pressure to fire injectors, after checking for leaks on pump and by passing all pipes to pump i evently got it running and starting on the key even after leaving for an hour thinking it must of been drawing air through the pipes that i had now bypassed, left over night only to find this morning starts up fine intially but then wont start on key sfter running for 10 minutes now a non start does any one now what could cause the pressure to fail so intermittant i am unsure if its worth checking compression/timing as seeing the problem is the injector not firing not sure if this would be conclusive i should also mention crank speed seems fine and have a fully charged battery coolant temp seems plausible in data too any one suggest any help i am thinking this pump is failing it wa a reconditioned unit supplied by customer
thanks lee