Isuzu 4le1t — Cooling water level and leak check
Maintenance · Cooling system
For the Isuzu 4le1t, from the Isuzu service manual.
Applies to: Isuzu 4le1t, Isuzu 4LE1 engine
Before you start
- Do not remove the radiator cap when the cooling water is at high temperature.
Procedure
- Check cooling water level within the reserve tank between MAX and MIN; replenish with 1:1 mix of water and antifreeze.
- Use the radiator cap tester, apply a pressure of 200 kPa {29.0 psi} and check for leaks.
- Check that the radiator hose and heater hose are not damaged and the hose clamp is not loose.
Tools required
- Radiator cap tester Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Leak test pressure 200 kPa {29.0 psi}
Full service-parts list: Isuzu 4le1t →, Isuzu 4LE1 engine →
Source: Isuzu 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.