Need some help - daughters car broke down 2012 1.6 M Sport - AA said at first coil pack but them timing chain had stretched- the below is what the garage has done and now cannot find the fault we are getting desperate to get it sorted π©π©π©
BMW 116i N13
Original faults misfire cylinder 4
Camshaft angle offset with crankshaft
Removed coil from cylinder 4 found damage, replaced coil and plug, fault cleared.
Camshaft angle offset with crankshaft reoccurred
Removed rocker cover - found timing chain loose- damage to guides
Replaced timing chain, tensioner, guides, rocker gasket
Cleared faults
Fault - inlet Camshaft stuck
Charge pressure control switch of as consequence
Removed and replaced both inlet and exhaust vanos hubs, rocker gasket
Cleared faults and retested
1/2
Fault reoccurred inlet camshaft stuck and charge pressure control switch of as consequence
Removed and replaced inlet vanos solenoid
Cleared faults and retested
Fault reoccurred inlet camshaft stuck
Charge pressure control switch off as a consequence