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MOTRS

HK-HG Monaro / GTS

1968-1971 / Coupe / Australia

All HK-HG Monaro / GTS problems All workshop issues
Common Suspension

Rear Trailing Arm Bush Wear

Symptoms

Clunking from the rear under acceleration and braking. Rear axle wander. Vague handling through corners.

Cause

The HK-HG uses trailing arms to locate the rear axle. The rubber bushings in these arms deteriorate over time.

Fix

Replace the trailing arm bushings.

Polyurethane replacements are available and last longer than rubber.

Budget $200-400 for parts.

Cost mentioned in fix
Budget $200-400 for parts

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Other known issues

Common Suspension

Front Suspension Wear

Clunking over bumps, vague steering, uneven tyre wear, wandering at highway speeds.
Critical Engine, Chevrolet V8 (327ci / 350ci)

Intake Manifold Gasket Leaks

Coolant leak at the front or rear of the intake manifold. Coolant may drip externally or, worse, leak internally into the engine oil. May also cause a vacuum leak, resulting in rough idle and poor fuel economy.
Common Engine, Chevrolet V8 (327ci / 350ci)

Rochester Quadrajet Carburettor Issues

Hesitation on acceleration (bog), flooding, fuel smell, hard starting when hot, black smoke, erratic idle.
Critical Engine, Chevrolet V8 (327ci / 350ci)

Overheating Under Load

Temperature gauge climbs on highway drives, particularly towing or climbing hills. May push coolant out the overflow. Engine pings (detonation) under load.
Common Engine, Chevrolet V8 (327ci / 350ci)

Hydraulic Lifter Noise

Ticking or clattering from the top of the engine that varies with RPM. May be audible at idle and disappear at higher RPM, or vice versa.
Common Engine, Holden Six (186ci) and V8 (253ci)

Oil Leaks, Rear Main Seal

Oil drips from the bellhousing area. Oil accumulates on the underside of the engine and transmission.
View all 18 HK-HG Monaro / GTS problems