Timing Belt and tensioner replaced - now multiple misfires?
Timing belt + water pump was replaced 6 months ago (customer supplied the parts, no tensioner) the tensioner gave way and belt was about to slip off but luckily all timing marks still lined up so fitted a new tensioner and belt.
Fired her up and now bringing up motor control system failure. DTC's p0300, p0301, p0302 + p0303 appear (multiple cylinder misfire, rear bank), and reappear after clearing. I've read and read over forums and all the suggestions as to what could be the problem and am more confused than before. battery, injectors, head gasket, cam sensor, tooth out, etc, etc... Where on earth do I begin? It seems to be running fine, but intermittently struggles just before the message on the dash reappears, or when the radiator fan kicks in sometimes.
alot of hours have been spent on this so far, any help would be very appreciated!
(am going to sleep on it and try a ECU/throttle reset in the morning)