Ford 2003 Mustang Workshop Manual page 841

Damaged valve
tappet or lash
adjuster.
Damaged valve
tappet guide or
valve tappet.
Burnt or sticking
valve.
Weak or broken
valve spring.
Carbon
accumulation in
combustion
chamber.
Excessive oil Leaking oil.
consumption
Malfunctioning PCV
system.
Worn valve stem
seal.
Worn valve stem or
valve guide.
Sticking piston
rings.
Worn piston ring
groove.
Worn piston or
cylinder.
Engine noise Leaking exhaust
system.
Incorrect drive belt
tension.
Malfunctioning
generator bearing.
Malfunctioning
water pump
bearing.
Malfunctioning or
damaged cooling
system.
Malfunctioning or
damaged fuel
system.
Loose timing
chain/belt (6268).
Damaged timing
chain tensioner
(6L266).
Excessive main
bearing clearance.
(PC/ED) manual.
INSTALL a new valve tappet or
lash adjuster.
INSTALL a new valve tappet
guide or valve tappet.
REPAIR or INSTALL a new
valve.
INSTALL a new valve spring.
ELIMINATE carbon buildup.
REPAIR oil leakage.
REPAIR or INSTALL new
necessary components.
INSTALL a new valve stem seal.
INSTALL a new valve and valve
guide.
REPAIR or INSTALL new piston
rings.
INSTALL a new piston and
piston pin.
REPAIR or INSTALL a new
piston or cylinder block.
REPAIR exhaust leakage.
REFER to Section 303-05
Refer to the appropriate section
in Group 414 for the procedure.
REFER to Section 303-03A
REFER to Section 303-03A
Refer to the appropriate section
in Group 303 for the procedure.
REFER to the Powertrain
Control/Emissions Diagnosis
(PC/ED) manual.
ADJUST or INSTALL a new
timing chain/belt.
INSTALL a new timing chain
tensioner.
ADJUST clearance or INSTALL
a new crankshaft main bearing
(6333).
.
.
.