ENGINE MECHANICAL (M13 ENGINE) 6A2-63
9) Install intake manifold referring to “Intake Manifold Removal
and Installation” in this section.
10) Install fuel injectors referring to “Fuel Injector Removal and
Installation” in Section 6E2.
11) Install exhaust manifold referring to “Exhaust Manifold
Removal and Installation” in this section.
Valves and Cylinder Head Inspection
Valve guides
Valve stem-to-guide clearance
Using a micrometer and bore gauge, take diameter readings on
valve stems and guides to check stem-to-guide clearance. Be
sure to take reading at more than one place along the length of
each stem and guide.
If clearance exceeds limit, replace valve and valve guide.
Valve stem-to-guide clearance
Valve stem diameter [A] standard
In: 5.465 – 5.480 mm (0.2152 – 0.2157 in.)
Ex: 5.440 – 5.455 mm (0.2142 – 0.2147 in.)
Valve guide bore [B] standard
In and Ex: 5.500 – 5.512 mm (0.2166 – 0.2170 in.)
Valve stem end deflection
If bore gauge is not available, check end deflection of valve stem
with a dial gauge instead.
Move stem end in directions (1) and (2) to measure end deflec-
tion.
If deflection exceeds its limit, replace valve stem and valve guide.
Valve stem end deflection limit
In: 0.14 mm (0.005 in.)
Ex: 0.18 mm (0.007 in.)
Valves
Visual inspection
• Remove all carbon from valves.
• Inspect each valve for wear, burn or distortion at its face and
stem end, as necessary, replace it.
Item Standard Limit
In
0.020 – 0.047 mm
(0.0008 – 0.0018 in.)
0.07 mm
(0.0028 in.)
Ex
0.045 – 0.072 mm
(0.0018 – 0.0028 in.)
0.09 mm
(0.0035 in.)
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