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Ford Ranger 2.5 tdci WLC engine cranking fuel pressure

1
Hi everyone!
I would ask if anyone knows what is minimal and recommended rail fuel pressure in ford ranger 2008 2.5l tdci WLC engine while engine cranks?

In my case car cranks but won`t start on hot(really hot) engine, and i suspect fuel feed pump, because fuel pressure while cranking is somewhere around 10 to 11 MPa, and it looks like it didn`t meets minimal conditions to run injector circuit(i suppose 12MPa).
While driving, car works good and the pressure is correct.

Thanks in advance!
Thanks given by:
2
Hi.are you shure that you only have 12mpa lower limit.because that is way to low.you should be looking at 250 bar which is 25000kpa.regards Mike
Thanks given by: wodorof
3
(05-30-2018, 11:59 PM)mmcd Wrote: Hi.are you shure that you only have 12mpa lower limit.because that is way to low.you should be looking at 250 bar which is 25000kpa.regards Mike

I`m not sure, but i observed that at 12mpa engine is able to start, it takes 5 or 6 secs. of cranking but it starts.
I thought that pressure is to low, but i couldn`t find any data to confirm.
Thanks given by:
4
Ive had this problem many times and have found 12mp is the min to start
9 times out of 10 it was the injectors at fault
also had dirt in the scv
ive had them not start under normal cranking but as soon as you spray some type of starting agent into intake they fire straight up and keep running
Injectors are a known problem
Thanks given by: wodorof
5
Check injectors fuel return quantity-10ml/min at idle rpm
Check pressure limiter valve fitted on Rail- Disconnect the hose. It is not allowed to lose pressure.
Also check rpm at cranking-min 250 rpm/min
don't forget to hit thanks and reputation buttons
Thanks given by: diagnostix

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