2008 Vito 115 will only rev to 3500rpm?

[Burtcokaine]

Hi hoping someone out there can help! My Vito won't reach redline it will max out at 3500rpm, I was told that it was due to faulty injectors, bought 4 new injectors and have fitted then only to find it's still unable to hit full rpm any suggestions please, thanks in advance

 

[m80]

How was it decided that the injectors were faulty?
Are the injectors new?
Have they been coded?

 

[Burtcokaine]

How was it decided that the injectors were faulty?
Are the injectors new?
Have they been coded?

Hi I had the injectors tested at a local diesel specialist and all 4 failed, so purchased remanufactured injectors from them and i have coded the new injectors, there is no fault codes stored either so not sure on the next step to take

 

[grober]

how did you know it was faulty injectors- did the garage use a good diagnostic unit?- did they check fuel pressure?-- the engine may be going into safe mode due to any number of faults- if the gearbox is automatic it could even be that??

 

[Burtcokaine]

how did you know it was faulty injectors- did the garage use a good diagnostic unit?- did they check fuel pressure?-- the engine may be going into safe mode due to any number of faults- if the gearbox is automatic it could even be that??

Hi I took them out and had them tested at a diesel specialist and all 4 had faults, the garage that originally discovered the faulty injectors used a snap-on scanner, I'm not sure if they tested fuel pressure, I have a icarsoft mb 2.0 scanner so can have a scan for fuel pressure, what sort of pressure should I be seeing? also the van has a manual gearbox

 

[grober]

sorry can't help with fuel pressure but these systems are very sensiitive to air in the system pipework ---sometimes happens after a fuel filter change

 

[Burtcokaine]

No worries I'll have a look on the web for pressure info, I'll give it a check over tomorrow for any leaks, thanks

 

[BIG UN]

If I was you to be certain I'd take it to someone with a Star machine But initially I think I would clear all the faults u have, run it & see what comes back.. you may find the fault easier that way.

 

[optimusprime]

How did you test the vito were you on the road ,with your foot down ,,or sitting on the drive doing it ? they wont red line stationary ,,,must be on the move .

 

[DSM10000]

How much higher than 3500 rpm does it normally achieve?

Is there any usable power after 3500 rpm.?