[iyade46]

Sometimes it should be faulty crank speed/position sensor....

(in my case still don't have got rail pressure looks like pump or regulation valve)

i read engine speed while cranking it is 160 ~ 200 i think it's ok for starting the car other way i try to start the engine with spray and engine run so that mean mechanicals is fine like timing and pistons

[lsalt100]

so in my case (no ramp pressure - reworked HP pump an driven cca 1000km, then no pressure hot and cold engine) helps HP pump exchange.

1. in measuring block U can see MB005-3 if all sensors are synchronised(crank and camshaft)
2. there are also start IQ in mg - if 0mg means no power to injectors MB005-2
3. before I ask about ecu, cause in this edc16 if is little problem with checksums engine is able to run 1hour-24hour or may be 3-6succesfull starts and then without any fault in ecu, engine stops to work...