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VK & VL Starting Problems Guide

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Starting problems are one of the most common issues experienced by VK and VL Commodore owners. These classic Holdens are now over 35 years old, and age-related wear in the ignition system, fuel delivery system, wiring, and batteries often leads to hard starting or complete no-start conditions.

The VK (1984–1986) and VL (1986–1988) Commodores differ in engine and electrical complexity, but both share a range of similar starting-related faults.

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Why Starting Problems Are So Common

Starting issues in VK and VL Commodores are usually caused by:

Main Factors

  • Ageing ignition components
  • Weak or old batteries
  • Poor earth connections
  • Fuel delivery issues
  • Wiring deterioration
  • Heat-related component failure

Even well-maintained cars will eventually develop starting issues due to age alone.

VK vs VL Starting System Differences

VK Commodore

  • Carburettor fuel system
  • Electronic ignition (Black Motor 202)
  • Simpler electrical system
  • Fewer sensors

VL Commodore

  • Electronic fuel injection (RB30 engine)
  • ECU-controlled engine management
  • More relays, sensors and wiring complexity
  • Higher sensitivity to voltage issues

VL models are generally more complex to diagnose.

1. No Crank Condition

When the engine does not turn over at all.

Symptoms

  • No sound when turning key
  • Clicking noise from starter relay
  • Dead ignition response

Causes

  • Flat or weak battery
  • Faulty starter motor
  • Ignition switch failure
  • Corroded battery terminals
  • Bad earth connection

This is one of the most common VK/VL issues.

2. Slow Cranking

Engine turns over slowly but does not start.

Symptoms

  • Sluggish engine rotation
  • Dim dash lights during crank
  • Difficulty starting in cold weather

Causes

  • Weak battery
  • Worn starter motor
  • High resistance in wiring
  • Poor earth strap

Often mistaken for fuel or ignition problems.

3. Engine Cranks But Won’t Start

A very common VK/VL fault.

Symptoms

  • Engine turns over normally
  • No firing or ignition
  • Repeated cranking without start

Causes

  • No spark (ignition fault)
  • No fuel delivery
  • Faulty coil or ignition module
  • ECU or sensor issues (VL models)

4. Ignition System Failures (VK Models)

VK Commodores rely on older ignition systems.

Symptoms

  • No spark
  • Intermittent misfire
  • Engine cuts out suddenly

Common Causes

  • Faulty ignition coil
  • Worn distributor cap and rotor
  • Failed ignition module
  • Damaged spark plug leads

Heat is a major cause of failure.

5. Fuel Delivery Problems

Fuel issues are common in both models.

VK Carburettor Issues

Symptoms

  • Hard starting when cold
  • Fuel smell
  • Rough idle after start

Causes

  • Blocked jets
  • Fuel pump failure
  • Incorrect float level

VL EFI Issues

Symptoms

  • Engine cranks but won’t fire
  • Starts then stalls
  • Poor cold starting

Causes

  • Faulty fuel pump
  • Relay failure
  • AFM (airflow meter) issues
  • Injector problems

6. Weak Battery Problems

Battery health is critical for starting.

Symptoms

  • Clicking when turning key
  • Slow crank
  • Electrical accessories dim

Causes

  • Old battery
  • Short trips not charging battery fully
  • Alternator failure

7. Earth (Ground) Connection Issues

Poor grounding is a major hidden cause of starting faults.

Symptoms

  • Random no-start issues
  • Flickering dash lights
  • Intermittent electrical faults

Common Earth Points

  • Engine block
  • Chassis grounding points
  • Battery negative terminal

Cleaning earths often fixes multiple issues at once.

8. Starter Motor Failure

Starter motors wear out over time.

Symptoms

  • Clicking noise
  • No crank or intermittent crank
  • Grinding noise

Causes

  • Worn brushes
  • Solenoid failure
  • Internal wear

Replacement is usually required.

9. Alternator Charging Issues

A weak alternator can cause starting problems indirectly.

Symptoms

  • Flat battery after driving
  • Dimming lights
  • Electrical instability

Causes

  • Worn alternator brushes
  • Faulty voltage regulator

10. VL ECU and Sensor Problems

VL Commodores rely heavily on electronic engine control.

Symptoms

  • No-start condition
  • Starts then immediately stalls
  • Erratic engine behaviour

Causes

  • Faulty ECU
  • Bad airflow meter
  • Sensor wiring faults
  • Relay issues

11. Fuel Pump Relay Failure

Common in VL models.

Symptoms

  • No fuel pump sound
  • Cranks but won’t start
  • Intermittent starting issues

Causes

  • Failed relay
  • Wiring corrosion

12. Cold Start Problems

Cold weather often makes issues worse.

Symptoms

  • Hard starting in mornings
  • Long cranking time
  • Rough idle when cold

Causes

  • Weak choke system (VK carburettor)
  • Faulty temperature sensors (VL EFI)
  • Weak battery performance in cold

Diagnostic Steps

Step 1: Check Battery Voltage

Ensure battery is fully charged.

Step 2: Test for Spark

Check ignition system operation.

Step 3: Check Fuel Delivery

Ensure fuel pump and carb/EFI system are working.

Step 4: Inspect Earth Connections

Clean all grounding points.

Step 5: Check Starter Motor

Listen for engagement and crank speed.

Preventative Maintenance Tips

Replace Battery Every 3–5 Years

Prevents most starting issues.

Clean Earth Straps Regularly

Improves electrical reliability.

Service Ignition System

Replace plugs, leads, cap and rotor as needed.

Maintain Fuel System

Keep carburettor or EFI system clean.

VK vs VL Starting Reliability

VK Commodore

  • Simpler system
  • Easier to diagnose
  • Fewer electronic faults

VL Commodore

  • More complex EFI system
  • More sensitive to voltage and sensors
  • Harder to diagnose but more efficient when working correctly

Starting problems in VK and VL Commodores are extremely common due to age and wear across multiple systems. Most issues come down to battery condition, ignition components, fuel delivery faults or poor earth connections.

The key to reliable starting is systematic diagnosis rather than guessing parts. In many cases, simple maintenance such as cleaning earths, replacing ignition components, or fitting a new battery will resolve the issue.

With proper care, both VK and VL Commodores can remain reliable starters despite their age, keeping these classic Holdens on the road.

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