Isuzu — Fuel pump functional check
Testing & diagnosis · In-tank fuel pump
From a Isuzu service manual — check it applies to your exact model before use.
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Before you start
- Apply the parking brake
- Stop the engine
Procedure
- Turn starter switch to ON position
- Touch the under portion of the fuel tank by hand within 12 seconds
- Make sure a vibration by the fuel pump is detected
Specs & values
- Fuel pump stops within 12 seconds of turning starter switch ON
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.