playing kill by
AO Gold Member
Join Date: Feb 2005
County: Down in the Park
there are a few conditions that need to be met before a common rail diesel attempts to start...
1- the key must be recognised (or rather the transponder chip in the key)
2- the battery voltage needs to be high enough during cranking to let the ecu work, at least 11v...
3- the cranking RPM needs to be at least 250
4- the diesel pressure in the common rail needs to reach 290 bar or higher
5- the crank and camshaft signals must be logical
so if you don't get diesel from the scavenging pump at all, either that pump is faulty or the electric circuit to that pump. If you get diesel for about 2 seconds after turning the ignition to "Marcia" it's more likely the RPM is not registered by the TDC-sensor