Upper Intake Manifold/Throttle Body Assembly Inspection (3.0L) - Mazda B-Series 1997 Workshop Manual

INTAKE AIR SYSTEM
UPPER INTAKE MANIFOLD 1 THROTTLE BODY
ASSEMBLY
Inspection
1. Check the upper intake rnanifoldlthrottle body assembly
for damage, cracks or deposits.
2. Verify that the throttle valve moves smoothly when the
throttle lever is moved from fully closed to fully open.
3. Verify the flatness of the upper intake manifoldlthrottle
body assembly contact surf ace.
4. Replace the upper intake manifold1 throttle body assem-
bly, if necessary.
Caution
The throttle body must not be cleaned. A sealant1
coating covering the throttle bore and throttle valv
makes the throttle body airflow tolerant to engine
intake sludge accumulation.