Faulty fuel pump, fuel pump relay or fuse, fuel filter, connectors or possibly even something else... who knows what without first checking?
Simply put these engines use an injection system called HEUI or Hydraulically-actuated, Electronically-controlled Unit Injectors. These injectors require a high pressure oil pump to supply the injectors oil pressure to actuate the internal injector piston to push fuel into the system. No oil pressure, no fuel.
Check for adequate fuel supply to injection pump check for clogged fuel filters kinked ro collapsed fuel and supply lines also return lines from injectors for blockage. And now for the biggy. Its possible that over time the injection pump has worn out. the engine must be timed to remove the pump correctly. while the pump is off have the injectors checked for opening pressure and spray pattern. I am telling you all of this under the assumption that the engine is mechanically sound ie compression and valve adjustment all could play a part. Good Luck!
if you have engine oil in your fuel injectors then you have bigger problems then your car not starting..
The original fuel injectors on that model were recalled - did you ever have them replaced?
The 3 series BMW uses a common rail diesel injection system. This means a high pressure pump provides diesel to a common rail feeding all 4 injectors. If one injector goes down there can be insufficient pressure to start the car. The 3 series BMW uses a common rail diesel injection system. This means a high pressure pump provides diesel to a common rail feeding all 4 injectors. If one injector goes down there can be insufficient pressure to start the car.
Check the MAP sensor, possible culprit.
It depends on the cam size, heads, and other factors. 60 to 80 pound injectors will be a good starting point.
um if it will not idel but start but you have to keep giving it gas... unplug the injectors and try starting it while pumping the gas if it starts you have a leaking injector... if this does not work it could be a bad egr ... or Idel Air Control Valve.. IAC ? hope this helps
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You can prevent fuel injection flooding by not pumping the gas pedal when trying to start the engine. Fuel injection systems do not need any additional fuel when starting the engine.
Starting with the 1988 model it did
No. With electronic fuel injection on today's cars, the fuel system gets fully charged when you turn the ignition key to the on position. This is true whether you are starting a car parked overnight or one that has been run recently.