Engine System-General Information: NVH Jaguar S-type I

Engine noise

Possible Source(s)

1. Excessive crankshaft main bearing clearance. Action(s) to take: INSTALL a new engine.

Possible Source(s)

1. Excessive crankshaft end play. Action(s) to take: INSTALL a new engine.

Possible Source(s)

1. Excessive connecting rod bearing oil clearance. Action(s) to take: INSTALL a new engine.

Possible Source(s)

1. Piston/cylinder worn. Action(s) to take: INSTALL a new engine.

Possible Source(s)

1. Piston ring damaged. Action(s) to take: INSTALL a new engine.

Possible Source(s)

1. Connecting rod bent. Action(s) to take: INSTALL a new engine.

Possible Source(s)

1. Valve spring(s) broken. Action(s) to take: INSPECT the valve spring(s).

Possible Source(s)

1. Excessive valve guide clearance. Action(s) to take: INSPECT the valve guide or valve.

Possible Source(s)

1. Cooling system inoperative (water pump, vibration of radiator), Action(s) to take: Inspect cooling system.

Possible Source(s)

1. Fuel system inoperative. Action(s) to take: Refer to «FUEL CHARGING & CONTROLS - 3.0L»(ref-199537) or «FUEL CHARGING & CONTROLS - 4.0L»(ref-199538)

Possible Source(s)

1. Excessive carbon buildup. Action(s) to take: ELIMINATE carbon buildup.

Possible Source(s)

1. Exhaust gas leakage. Action(s) to take: REPAIR leakage.

Possible Source(s)

1. Incorrect drive belt tension. Action(s) to take: INSPECT the drive belt tension. Refer to «SPECIFICATIONS & DRIVE BELT ROUTING»(ref-164247)

Possible Source(s)

1. Generator front bearing worn. Action(s) to take: Refer to «GENERATORS & REGULATORS»(ref-164974) .

Tappet noise, engine running

Possible Source(s)

1. Incorrect tappet clearance. Action(s) to take: CHECK and ADJUST the tappet clearance as necessary.