Hi there I have a 2002 Nissan X-trail 2.5 petrol 4x4 qr25 and did a engine swap. Placed all my parts over and trying to start it sounds like it wants to start but just cranking. I checked the following. All relays and fuses, earth's, fuel pump working and got nice pressure, changed the plugs,checked ecu codes and found 0335 (crankshaft position sensor) replaced both crank and cam sensors and still nothing. Cleared the code and got 0000 ( no faults found) still nothing! Checked the throttle body and it work fine! I'm busy pulling all my hair out! The little I got! Lol. Then I went trouble shooting and checked the coil packs getting between 7 and 8 ohms on them. Checked the coil plugs and got earth and 12 volt on them checked for puls wile cranking and found a intermittent puls. That explains the flooding! Then I thought it could be the nats and got it checked out and recoded with a new key! No luck! Still have 0000 on the ecu! Pls help!