Detroit Diesel — Inspect and Test Prior to Reuse
Testing & diagnosis · Fuel injector
From a Detroit Diesel service manual — check it applies to your exact model before use.
Procedure
- Submerge injector in clean solvent and blow dry with compressed air.
- Inspect external parts for wear, rust and corrosion.
- Inspect follower, spring, body and spray tip for wear or abrasion.
- Check rack freeness and plunger movement in Tester J 29584.
- Check injector for leaks using Tester J 23010-A.
- Check spray pattern, atomization and valve opening pressure using Tester J 23010-A.
- Perform injector fuel output test using Calibrator J 22410-A.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Detroit Diesel 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.