I have a mazda 6 mzr-cd turbo diesel wagon 2009 model. I just purchased the car and after trying to jump the car i thought the engine had no compression. However after trying again with a stronger battery the engine seemed like it wanted to start but it wouldnt. I used starter spray into the intake and after cranking it for a while i got it to start however it wont stay on. I unplugged the fuel line to the injector to and tried to crank to see if diesel was coming out, however it was coming out but very minimal amount and it doesnt spray. I have tried to figure out why diesel is not pumping into the engine, if anyone could help me out. My brother checked with a computer to see if the cluster had been changed because he informed me that if an ecu is changed then the cluster and key has to go with it else it will not start. Any suggestions to as why the diesel wont pump into the engine and why the pressure is low?