Detroit Diesel — Removal of Fuel Doser Valve
Repair & overhaul · Fuel Doser Valve (FDV)
From a Detroit Diesel service manual — check it applies to your exact model before use.
Procedure
- Disconnect dosing fuel line from injection nozzle.
- To remove the FDV, engine coolant must be drained.
- Following draining of coolant, disconnect in and out coolant lines.
- Loosen two Allen screws and remove the FDV.
- With removal of the FDV will come removal of a gasket, a shielding pot, and a second gasket. Discard the gaskets and retain the shielding pot.
Tools required
- Allen wrench Amazon
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.