Originally Posted by multijet crdi
Do you have access to a ELM 327 Cable. If yes download Multiecuscan and scan car using that and check parameters like air intake quantity, inejctor codes match with injector on car per cylinder, fuel pressure, status of clutch switch (does it show press or released), accelerator, potentionometer track is it track 1 or track 2.
It will also any fiat specific errors stored in ECU.
Yes , we have that cable .
We have fiat ecu device borrowed from a Work shop.
Will check it today, and note you back.
I am also keen in rail pressure at no start ,no crank, just in ignition position i must see minimum 15 to 20bar due to auxiliary pump,
And at crank i minimum of 250 to 300bar
Else it will be the pressure regulator working bad.
Will figure it out today.
Also yesterday we changed from a well running car
Rail fuel pump
Fuel filter assembly
But still problem is same
Are not the issue.
So now my mind diverges to pneumatic and electrical faults
Ie. Turbo or intake manifold vaccum leaks or something.
On Timing of the ignition.
But we replaced crank /cam sensors but its not the issue so leave it apart.
But, if valves are having some mistake.
It can be seen in compression test , but as far as in exhaust we see no color particle's.
But still timing may be bit not aligned ie. Gas escapes at compression to exhaust. Valve opens before it should be.
But it can be seen by white smoke? In exhaust?
Compression is good
Fuel delivery is good
If Timing is good
Something out of box is the issue. :-!
As the value clearance is maintained by hydraulic tappets, it need not be checked.
Ie, at last stage of hope we decide to open virgin engine head, not in early stage of diagnosis.
I also suspect
ECU is weak.
Ie the 5v sensor circuits and dsp chips also the reference voltage circuits may be weak.
So we try to change the immobilizer and ecu from a working car. (Today)
Keep in touch crdi!
Wats app me if possible.
Cant send a pm though