the car is now a non-start, cranks (maybe a bit slow,
start to scope crank, cam, rail pressure and injector current.
Does this car have an inertia switch?
What sort of fuel pressure for this car, not looked, but assume we can measure at the rail (if not suggestions where to measure - from a practical point of view as well as diagnostically relevant)?
Where is the car's fuel pressure sender (correct, have no tech data for this thing!), so we can monitor output at sensor (OK, can check live data on tool too ... but nice to know where it is, just in case)
What's the likely min threshold for cranking rotation needed? 200rpm, 300rpm? Is there any manufacturer data in case this is critical?
On these smoke boxes what's the aprox compression pressure we should be happy with ... yes diesel numptie here
Yes I will get a relative done first, but as we have a WPS we may as well rule it in out conclusively by doing the real deal, don't want to have to back track, test once thoroughly and avoid doubling back !!
Carry out compression test using diagnostic equipment (do not remove ceramic glow plugs).
Maybe someone may explain better the "do not remove ceramic glow plugs" sentence.
But I can't be sure if it isn't an absolute compression test using the glow plugs pressure sensor, if this system has that type of sensor fitted inside each glow plugs.
but as we have a WPS we may as well rule it in out conclusively by doing the real deal, don't want to have to back track, test once thoroughly and avoid doubling back !!
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Pico Technology — automotive lab scopes and diagnostic equipment