Hi car came in as a non runner, battery no good so replaced it car tried to start. scanned system and 2 codes keep coming up and will not clear P0343 and P0367 Inlet and exhaust cams coherence, removed plug and tested for spark and it seems to spark twice then no spark. have had engine running twice now and it seems to run fine, no noisy timing chain but then switch off and will not start again, it seems to fire then nothing. scanner says system is reading key, replaced crank sensor still no good, tested coils and plugs were sparking using scanner, smells of fuel when cranking. The 2 codes will not clear but is that because engine is not running to allow cam sensors to send signal to ecu, was tempted to send ecu off for testing but have had bad experiences with those companies, any advice would be grateful. Thank you Paul