Commodore (VB-VL)

1978-1988 / Sedan / Estate / Australia

All Commodore (VB-VL) problems All workshop issues

Common Engine, Holden Six (3.3L / 202ci)

Carburettor Issues (VB-VH)

Symptoms

Hard starting, rough idle, flat spots on acceleration, flooding, poor fuel economy, black smoke.

Cause

The Stromberg and Rochester carburettors used on VB-VH models wear internally. Needle valves stick, accelerator pump diaphragms perish, jets clog, and float levels drift. Ethanol in modern fuel attacks old rubber seals and accelerator pump cups.

Fix

A carburettor rebuild kit costs $40-80 and includes all the gaskets, seals, needle valve, and accelerator pump components.

Rebuild it on the kitchen table over a weekend.

If you're not comfortable with carby work, there are still specialists around, check local wreckers and auto-electrical shops.

Alternatively, fit an aftermarket Weber or convert to EFI.

Cost mentioned in fix

$40-80

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Other known issues

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.

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.

Critical Engine, Nissan RB30E (VL naturally aspirated)

Timing Chain Stretch

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

Common Engine, Nissan RB30E (VL naturally aspirated)

Oil Consumption

Oil level drops between services. No visible external leaks.

View all 21 Commodore (VB-VL) problems