VitzFix

Crankshaft key breaks after pulley work

Symptoms
After the crank pulley was removed (belt or timing work) the engine runs badly or valves hit pistons
Likely cause
Crank pulley not tightened correctly so the small key breaks
Fix
When refitting the crank pulley use a new key and the correct bolt torque. Check timing marks
Applies to
SCP10 1SZ-FE
Confidence
medium

Sources

Related problems on this car

Similar problems on other cars

Where the parts are · Warning lights · Fault codes · Maintenance

Guidance only – confirm with a mechanic before repairs. All common problems