Isuzu — Air Bleeding - In-line Type Injection Pump
Maintenance · Fuel system
From a Isuzu service manual — check it applies to your exact model before use.
Browse Isuzu generators & specs →
Procedure
- Loosen the priming pump cap on the injection pump.
- Loosen the fuel return eye bolt on the fuel filter.
- Operate the priming pump until there are no more bubbles visible in the fuel discharged from the fuel return eye bolt.
- Retighten the fuel return eye bolt on the fuel filter.
- Loosen the bleeder bolt while operating the injection pump priming pump to check that the air has been bled completely.
- Operate the priming pump several times to check for fuel leakage around the injection pump and the fuel filter.
Source: Isuzu service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.