The following table should be consulted if the obtainable compression reading is not within the us-
is higher than usable
is lower than usable
Cylinder Head Removal
Exhaust Pipes (see Exhaust Pipe Removal)
Cylinder Head Cover (see Cylinder Head Cover Re-
Camshafts (see Camshaft Removal)
Throttle Body Assy (see Throttle Body Assy Removal in
the Fuel System (DFI) chapter)
Throttle Body Holder
Water Temperature Sensor Connector [A]
Front Camshaft Chain Guide
Carbon accumulation on piston and in
combustion chamber possibly due to
damaged valve stem oil seal and/or
damaged piston oil rings (This may be
indicated by white exhaust smoke).
Incorrect cylinder head gasket
Gas leakage around cylinder head
Bad condition of valve seating
Incorrect valve clearance
Incorrect piston/cylinder clearance
Bad condition of piston ring and/or
piston ring grooves
ENGINE TOP END 5-21
Remove the carbon deposits
and replace damaged parts if
Replace the gasket with a standard
Replace damaged gasket and
check cylinder head warp.
Repair if necessary.
Adjust the valve clearance.
Replace the piston and/or cylinder.
Inspect the cylinder and
replace/repair the cylinder and/or
piston as necessary.
Replace the piston and/or the