Skip to content
MOTRS

Commodore (VB-VL)

1978-1988 / Sedan / Estate / Australia

All Commodore (VB-VL) problems All workshop issues
Critical Engine, Nissan RB30E (VL naturally aspirated)

Timing Chain Stretch

Symptoms

Rattling noise from the front of the engine on cold start. Rough idle that may smooth out as the engine warms.

Cause

The RB30E uses a single-row timing chain that stretches over time. The hydraulic chain tensioner compensates to a point, but once the chain is beyond the tensioner's range, it rattles against the timing cover and can skip teeth.

Fix

Replace the timing chain, tensioner, and guides.

The front cover must be removed.

This is a full-day job.

Budget $300-500 for parts and a full day of labour.

Do not ignore timing chain rattle, a skipped chain will bend valves and destroy the engine.

Cost mentioned in fix
Budget $300-500 for parts

Know something we don't?

Owned a Holden Commodore (VB-VL)? Share your experience with this issue. What worked, what didn't, costs, tips. Help the community.

Submit an update
// More Commodore (VB-VL) problems

Other known issues

Common Engine, Nissan RB30E (VL naturally aspirated)

Oil Consumption

Oil level drops between services. No visible external leaks.
Minor Engine, Holden Six (3.3L / 202ci)

Worn Valve Stem Seals

Blue smoke on startup that clears after 30 seconds to a minute. May also smoke briefly on deceleration after sustained highway driving.
Common Engine, Holden Six (3.3L / 202ci)

Carburettor Issues (VB-VH)

Hard starting, rough idle, flat spots on acceleration, flooding, poor fuel economy, black smoke.
Critical Engine, Holden Six (3.3L / 202ci)

Oil Leaks (All Holden Six and V8)

Oil on the garage floor, oil smell, oil coating on the underside of the engine.
Critical Engine, Holden V8 (253/308)

Overheating in Traffic

Temperature gauge climbs into the red zone in slow traffic or on hot days. May push coolant out the overflow.
Common Engine, Holden V8 (253/308)

Worn Valve Train

Ticking or clattering from the top of the engine. May be constant or vary with RPM.
View all 21 Commodore (VB-VL) problems