Cylinder Head Replacement - 90 Series Prado (1KZ-TE Engine)

Introduction

This document outlines the process of replacing a cracked cylinder head on a Toyota Prado 90 Series with a 1KZ-TE engine. It details symptoms, temporary fixes, and a permanent repair solution.

Problem

  • White vapour from the exhaust.
  • Burnt glycol smell.
  • Bubbling in the coolant overflow.
  • Symptoms appeared at approximately 337,000 km.

Temporary Solution

  • Add Seal Tite to the cooling system as per the product directions.
  • Run the engine until all bubbles disappear from the coolant overflow.

Solution

  • Replace the cracked cylinder head.
  • Replace the timing belt and tensioner.
  • Perform a full vehicle service, including new engine oil and oil filter.
  • Replace coolant.
  • Replace all four glow plugs.

Relevant Parts

  • Cylinder Head: Aussie made cylinder head from All Head Services (Hallam, Victoria).
  • Timing Belt: New timing belt.
  • Timing Belt Tensioner: New tensioner.
  • Glow Plugs: Four new glow plugs.
  • Coolant: New coolant.

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