Doosan — Cylinder compression pressure check
Testing & diagnosis · Engine
From a Doosan owner's manual covering: G265, G265XW/XF, G300, G300XW/XF, G335, G335XW/XF, G400, G400XW/XF, G430, G430XW/XF, G435, G435XW/XF…. Check it applies to your exact model before use.
Applies to: Doosan P126TI engine, Doosan P126TI-II engine, Doosan P158LE engine, Doosan DP158LC engine, Doosan P180LE engine
Procedure
- Warm up the engine then stop it and remove nozzle assemblies.
- Install special tool (gauge adapter) in nozzle holder hole.
- Connect the compression pressure gauge to the adapter.
- Cut off fuel circulation, rotate the starter, measure each cylinder pressure.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Standard 25 ~ 28 kg/cm2; Limit 24 kg/cm2 or less; difference within ±10%
- At water temperature 20°C, 200 rpm (10 turns)
Source: Doosan owner's 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.