Isuzu 4HK1 / 6HK1 — Cylinder head cover installation
Repair & overhaul
For the Isuzu 4HK1 / 6HK1, from the Isuzu service manual.
Applies to: Isuzu 4HK1, Isuzu 6HK1
Before you start
- Push connector thoroughly until claws raise.
Procedure
- Install gasket on lower cover.
- Install head cover case.
- Install fuel injector harness connector; push until claws lock.
- Install gasket on head cover.
- Install head cover and tighten in order.
Tools required
- torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Tightening torque: 4HK1: 18 N·m (13 lb ft); 6HK1: 13 N·m (9.6 lb ft)
Full service-parts list: Isuzu 4HK1 →, Isuzu 6HK1 →
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.