HK-HG Monaro / GTS

1968-1971 / Coupe / Australia

All HK-HG Monaro / GTS problems All workshop issues

Common Suspension

Front Suspension Wear

Symptoms

Clunking over bumps, vague steering, uneven tyre wear, wandering at highway speeds.

Cause

Ball joints, tie rod ends, idler arm, and control arm bushings all wear with age. The Monaro's heavier V8 engines put more stress on the front suspension than the lighter six-cylinder HK/HT/HG sedans.

Fix

Complete front end refresh, ball joints, tie rod ends, idler arm, Pitman arm, control arm bushings, and sway bar links.

Budget $600-1,200 for a complete kit.

Polyurethane bushings (Nolathane, SuperPro) are recommended for their longevity.

Cost mentioned in fix

Budget $600-1,200 for a

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Other known issues

Common Suspension

Rear Trailing Arm Bush Wear

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

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