2007 ZD3.0 problem

[cappytarga]

Hi, have a 2007 ZD3.0l turbo common rail suddenly developed a starting problem. Sometimes starts straight away sometimes not , once started runs fine but if turned off will usually not start again. Have replaced fuel filter and checked for leaks (none found). Does anyone have any suggestions, cheers Rob

[Jim Kay]

G'day Rob,

Had a similar problem with a Ford Ranger 3.0 ltr CR turbo diesel.
Diagnostic scan showed all sorts of problems which would have required replacement of almost all the fuel system including the pump, rail, and injectors. It was going to cost me an arm and a leg to fix.

I did a bit of googling and found a number of references re. a dodgy starter motor causing the same sort of symptoms as fuel problems on starting. Decided to replace the starter (a couple of hundred bucks) before paying out thousands for fuel system reco. Guess What? Starting problem was cured.

Apparently it takes a lot of grunt to turn over a modern CR diesel motor. If your battery or starter is not up to the task the motor may crank over but not well enough to fire.

Best of luck
Jim K

[happygu]

Sounds like it is cranking over, but not starting Rob?

If this is the case, it will most probably be either a leaky injector or the fuel pressure relief valve on the end on the fuel rail that is leaking, and not letting it start due to perceived low fuel pressure.

[threedogs]

If you can Super Cheap have a diagnostic tool they can plug in and tell what faults if any you have.
I would invest in a SCAN GUAGE, to suit you CRD, clear your own faults then.
You could clean your Maf sensor and disconnect the battery for 1/2hr to see if that improves things
Could also be a cracked fuel line allowing it to leak back a tad
It could even be your ECU relay.
Big Fletch wrote a bit about it Ill find the thread for you

[the evil twin]

Hi, have a 2007 ZD3.0l turbo common rail suddenly developed a starting problem. Sometimes starts straight away sometimes not , once started runs fine but if turned off will usually not start again. Have replaced fuel filter and checked for leaks (none found). Does anyone have any suggestions, cheers Rob

Agree with happy GU... sounds like a fuel or relay/sensor issue rather than a starter circuit to me if it "runs fine but if turned off will usually not start again".

You could try swapping the ECU relay and A/C relay at the fuse box.
That sucker can cause some weird shit and it is easy (and cheap) to rule it out by swapping.

edit... TD posted the pics while I was typing... thanks dude

[threedogs]

http://www.nissanpatrol.com.au/forums/showthread.php?1428-GU-3ltr-owners-ECM-relay-issues&highlight=FLETCH

Heres the link from Big Fletch

[Hodge]

Definitely sounds like the relief valve IMO.

http://www.nissanpatrol.com.au/forums/attachment.php?attachmentid=63412&stc=1

[threedogs]

Have a read of 3lt CRD issues by EX teltra Truck same problem I think

http://www.nissanpatrol.com.au/forums/showthread.php?36086-3l-crd-issues