Fuel Filler Cap; General Description; Inspection - Isuzu C22NE Workshop Manual

6C-12 ENGINE FUEL

Fuel Filler Cap

General Description

Fuel filler cap includes vacuum valve.
In case any high vacuum happen in tank, the valve works to
adjust the pressure to prevent the tank from being damaged.
Legend
1 Fuel Filler Cap

Inspection

Check the seal ring in the filler cap for presence of any
abnormality and for seal condition.
Replace the filler cap, if abnormal.
CAUTION: The fuel filler cap valve has characteristics.
A defective valve, no valve at all or a valve with the wrong
characteristics will do a lot of harm to engine operating
characteristics; be sure to use the same fuel filler cap as
installed in this vehicle.