Isuzu 4JA1 Workshop Manual page 197

2. For removal of the quick connector, hold the quick
connector in one hand, and pull out the connector with the
other hand while pressing the square relieve button of the
connector, as illustrated.
NOTE: Do not use tools of any kind. Only use bare hands
when disconnecting the connector. Use a lubricant (light oil)
and/or push and pull the connector until the pipe is
disconnected.
140R100037
Cover the connectors that was removed with a plastic bag,
to prevent dust or rain water from entering.
140R100028
Reuse of Quick–Connector
• Replace the port and connector if scratch, dent or crack is
found.
• Remove any dirt build up on the port when installing the
connector. Replace the connector, if there is any forms of
rust, dent, scratch.
• After cleaning the port, insert it straight into the connector
until it clicks. After it clicks, try pulling at 49N (5kgf) it out to
make sure that it is not drawn and is securely locked.
140R100036
Assembling Advice
By applying engine oil or light oil to the pipe, port makes pipe
assembly easier. The pipe assembly should take place
immediately after applying oil (to prevent dust from sticking to
the pipe surface – which may decrease sealing ability).
Test/Inspection After Assembling
1. Reconnect the battery negative cable.
2. Start the engine and observe the engine idle speed. The
presence of dirt in the fuel system may affect the fuel
injection system.
3. Check for fuel leakage from the connector.
FUEL SYSTEM 6C – 15