Volvo Penta — Fuel system bleeding
Maintenance · Fuel filters and fuel injection pump
From a Volvo Penta service manual — check it applies to your exact model before use.
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Before you start
- If priming pump cap is tightened too much (more than 240 degrees total), top of pump might be damaged.
Procedure
- Put fuel filter switching cock in left filter bleed position and loosen left air vent plug.
- Turn priming pump plunger counterclockwise to unlock.
- Move plunger up and down until fuel free of air flows out, then tighten air vent plug.
- Put switching cock in neutral and repeat with other filter.
- Loosen air vent cock on injection pump about 1.5 turns and pump priming pump.
- When bubble-free fuel comes out, lock priming pump cap while holding down, then tighten air vent cock.
Tools required
- Wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Priming pump cap tightened hand-tight then 120 to 150 degrees more with wrench
Source: Volvo Penta 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.