not the ECU
checked right side for chain sprocket aligning at TDC - my straw in the spark plug hole rising up and down is moving freely, chain taught and sprocket aligns at 6 o'clock at TDC
checked left - tappets are not opening or closing at all when i turn the motor via the alternator bolt at front, no movement at all. chain is taught and spins round and my straw risies and falls but tappets dont move at all- what has blown up
You won't know until the engine is disassembled. Has the bike been rollerized?