54 Plate Vauxhall Astra 1.7 Diesel Intermittently not starting?

Someone posted this on another site:
so many things it could be that can cause this. a common one will be the common rail pressure sensor giving a false reading. if it doesn't see 10k psi the it won't start. it could have the required pressure but the sensor is duff, or the sensor is right and there isn't enough pressure due to a leaking injector or a duff high pressure pump. it needs someone who can diagnose common rails to investigate it. so many garages just havn't got a clue , plug a code reader in , no codes so shrug shoulders and roll over and die, which is no good for the customer with a car that won't start.

QWales
January 2015

I have a same problem. I have 2004 Vauxhall Astra. It wont start till i spray easy start into the Air filter box, I have to do that every time i will start the car. Please can somebody help me thanks.

Ran
February 2012

sound to me like the fuel filter needs replacing as on servicing garages dont bother you need to specify
when you gey it done.When you fill up its disturbing dirt in bottom of tank /also make sure you use the dearer diesel once every month or 2 as the cheap stuff has less lubricant in it!Thats why a few years back lots of engines seized as the supermarket suppliers were cutting corners.

robert simms
December 2010

I have had similar problem with a Diesel Vectra, turns over but wont fire up especially after being left all night. Turned out to be one of the glowplugs. Reason it was eventually started was heat generated by constantly turning it over. New glow plug about £28.

A concearned bystander
April 2010