CDTi Engine failure to start

[MarkS]

CDT fault diagnosis :https://www.the75andztclub.co.uk/for...ad.php?t=22402

[lionatus]

Put a gallon of diesel in. If its starting your out of fuel and your gauge is wrong because one of the floats has stuck and so you're average fuel level well may be around half a tank to a quarter tank when it isn't. Its happened to me twice now. I put 30 l in at pump and watched as the needle went to almost zero from halfway as the system refilled itself. Others on here have suggested if you suspect a stuck float to do a few emergency stops to jolt it free when you're safe to do so. This assumes a fuel problem in that you have none.

Originally Posted by MarkS

'52 plate.
EGR valve has previously been cleaned.
Everything was working ok. Parked up.
20 minutes later, engine turns over fine but fails to start.
In tank pump is whining nicely.
Under bonnet pump buzzes steadily for 60 seconds.
Fuel level is ~30%.
Moderate amount of rain recently.
Air temperature ~14°C.
Temperature gauge and all dashboard lights (including oil) are working as expected.
Battery voltage was 11.9V (bit low)
Tacho is reading ~150rpm under starter.
Battery is now on charge

Q) If crankshaft sensor has failed, will the tachometer work ok ?

Any other ideas ?

Relay dropping out due to low battery voltage ?

Easy Start on order, in case it helps.

A leaking injector has been suggested as the possible problem.
Subsequent attempts at starting the next day after charging are unsuccessful.