Isuzu 4LE2 — Coolant Change
Maintenance · cooling system
For the Isuzu 4LE2, from the Isuzu owner's manual.
Applies to: Isuzu 4LE2, Isuzu 4LE2 engine
Before you start
- Cover the radiator cap with a rag and turn slowly to release steam pressure when engine is hot
Procedure
- Remove the radiator cap.
- Open the drain cock at the radiator lower part to drain coolant.
- Drain coolant from the engine via the water drain plug at the rear of alternator on the left side of cylinder body.
- Close or tighten the coolant drain plug.
- Fill the radiator with clean drinking water up to the filler port neck, gradually to prevent air entry.
- Operate the engine about five minutes at low idle speed to bleed air, then stop and replenish coolant.
Specs & values
- Coolant volume (Engine only): 2.8 L (3.0 qts)
Full service-parts list: Isuzu 4LE2 →, Isuzu 4LE2 engine →
Source: Isuzu 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.