1. GENERAL INFORMATION People GT 125i
Possible cause
9. Check oil level and condition Incorrect Oil level too high
Oil level too low
Contaminated oil
Correct
10. Remove cylinder head cover Valve train not Clogged oil
and inspect lubrication lubricated properly Clogged oil control orifice
Valve train lubricated properly
11. Check for engine overheating Overheating Fan motor not working
Excessive carbon build-up in
combustion chamber
Use of poor quality fuel
Not overheating Wrong type of fuel
Drive and driven pulleys/clutch
slipping
12. Accelerate or run at high Engine knocks Worn piston and cylinder
speed Worn type of fuel
Excessive carbon build-up in
combustion chamber
Ignition timing to advanced (faulty
ECU)
Engine does not knock Lean fuel mixture
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