I recently purchased an 01 gtx with direct injection. Original complaint was it would fire but not start. I have removed the air compressor line and verified the compressor makes over 100 psi dead headed and tested the relief valve to 80psi. I have removed and cleaned the fuel pump but have not yet verified exact fuel pressure. What I have found is that if I remove the black air line that leads to rave valve solenoid from the compressor head that it will start and idle. Once I hook it back up it will die.Not sure why this is and looking for some guidance. Thank you for any help!