The vehicles MIL-malfunction indication /engine light blinks at startup and then stays on. The only fault in the ecu is P0300 -RANDOM MISFIRE and P0304-cyl 4 misfire and P0355-Ignition coil e/primary/secondary cct malfunction.
When viewing live dat on diagnostic machine?
The ignition coil of cyl 4 was swopped with cyl 6, ignition coil is ok as cyl 6 does not misfire.
When spark plug is connected to ignition coil cyl 4 and held against earth point of engine cyl 4 still does not fire.
New spark plugs have been fitted, bosch platinum plugs.
The fire/trigger wire from Bosch ECU is good 1 ohm resistance and the other 3 wires also good.
I replaced upstream lambda oxygen sensors bank 1+2 but not downstream sensors. Pressure in both cats seem to be the same.
The camshaft positioning sensors and magnets have all been changed.
The injector has not been checked for firing and or resistance.
The crankshaft positioning sensor has not been changed.
Compression test has been performed and ok by maritime motors.
The fuel pressure has been checked by maritime motors/agents.
Monday, August 20th, 2012 AT 6:41 PM