MANUALS · EMISSION CONTROL [17] · страница 28 из 46 · Открыть оригинал PDF ↗
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Purge Port VacuumInspection
Check Condition
Engine coolant temperature:80-958C (176-205'F)
(1) Disconnect the vacuum hose (red) from the throttle body
purge hose nipple and connect a hand vacuum pump to
the nipple:
(2) Vehicles built up toMay;1992
Start the engine and check to see that, after raising the en-
gine speed by racing the engine, vacuum remains fairly
constant:
NOTE
If there is no vacuum created, it is possible that the throttle
body port may be clogged and require cleaning:
Vehicles built from June, 1992
Start the engine and check to see that; after raising the en-
gine speed by racing the engine, vacuum raises proportion-
ately with the rise in engine speed.
NOereis a problem with the change in vacuum itis possible
that the throttle body port may be clogged and require clean-
ing
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