This document outlines a case of severe engine sludge buildup in a 2006 Toyota Prado V6, its symptoms, and the steps taken to rectify the problem. This serves as a warning to prospective buyers of used vehicles, highlighting the importance of verifying service history and performing thorough inspections.
Problem
A 2006 Toyota Prado V6 with reportedly 90,000 km exhibited the following symptoms:
- Excessive white smoke from the exhaust, potentially indicating oil burning.
- Suspected oil leakage past valve stem seals, potentially exacerbated by parking on a steep incline.
- Major carbon/sludge buildup discovered under the rocker cover.
- Potential blockage at the oil pickup.
Solution
Given the extent of the sludge buildup, a multi-faceted approach was taken:
- Engine Replacement/Rebuild:
- A used engine was sourced as a core for parts.
- Cylinder heads from the used engine were serviced and deemed to be in good condition.
- The original engine’s bottom end was rebuilt, as the used engine’s bottom end had water damage in one cylinder bore.
- Preventative Maintenance:
- Transmission fluid flush.
- Transfer case oil change.
- Front and rear differential oil change.
- Brake fluid flush.
Relevant Parts
- Sourced a used engine, but the specific part number is not mentioned.
This technical summary was auto-generated based on recovered archives. Do not rely on its factual accuracy. Refer to the original thread. Source: View Original Conversation
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