Honda Technical Service Bulletin (TSB) 06-059 addresses a common issue found in certain Honda vehicles: excessive oil consumption. This TSB isn't a recall; it provides technicians with diagnostic and repair procedures for vehicles exhibiting this problem. Understanding this bulletin can help Honda owners identify potential issues and engage with their mechanics effectively. This article will delve into the specifics of TSB 06-059, explaining its implications and offering valuable advice for owners.
What Does Honda TSB 06-059 Cover?
TSB 06-059 primarily focuses on excessive oil consumption in specific Honda models, primarily affecting certain years and engine types. While the exact affected models vary, it frequently relates to issues within the piston rings and cylinder bores. The excessive oil consumption often manifests as a noticeable decrease in engine oil level between oil changes, potentially leading to engine damage if left unchecked. The bulletin details the diagnostic process that mechanics should follow to determine if piston ring wear or other cylinder related problems are causing the excessive oil use.
Identifying the Symptoms of Excessive Oil Consumption
Before assuming your Honda is affected by the issues outlined in TSB 06-059, it's crucial to identify the symptoms. These typically include:
- Frequent low oil level warnings: Your vehicle repeatedly indicates low oil levels between scheduled changes.
- Visible oil stains or leaks: Check for oil leaks under your vehicle. While this doesn't directly point to TSB 06-059, it's a crucial indicator of an engine issue that needs professional attention.
- Blue smoke from the exhaust: This indicates that oil is burning in the combustion chamber, a primary symptom of worn piston rings or other engine issues.
- Reduced engine performance: In severe cases, excessive oil consumption can lead to reduced power and performance.
Note: Normal oil consumption varies depending on driving conditions and the age of your vehicle. Consult your owner's manual for acceptable oil consumption rates for your specific model.
The Diagnostic Process Outlined in TSB 06-059
Honda's TSB 06-059 provides a structured diagnostic process for mechanics. This typically involves:
- Verifying Oil Consumption: The mechanic will carefully monitor the oil level over a period, noting the amount of oil used.
- Compression Test: This checks the integrity of the piston rings and cylinders. Low compression readings often indicate worn rings.
- Leakdown Test: This identifies leaks within the cylinders, further pinpointing the source of the problem.
- Visual Inspection: A visual inspection might reveal signs of wear on piston rings or scoring on the cylinder walls.
Important: These tests require specialized tools and expertise, and should only be performed by qualified Honda technicians.
Repair Procedures Mentioned in Honda TSB 06-059
If the diagnostic tests confirm excessive oil consumption due to piston ring or cylinder wear, the repair procedures outlined in the TSB typically involve:
- Engine overhaul: This is the most common repair, involving replacement or honing of the cylinders and fitting new piston rings. This is a major repair and quite expensive.
- Cylinder sleeve installation: In some cases, cylinder sleeves may be installed to restore the integrity of the cylinder walls.
- Other component replacements: Depending on the specific cause, other engine components may require replacement.
Case Study: A Honda Accord Affected by Excessive Oil Consumption
A 2006 Honda Accord with the 2.4L K24A engine exhibited significant oil consumption, showing low oil levels repeatedly. After a thorough diagnostic process which included the steps mentioned above in accord with TSB 06-059, a mechanic discovered worn piston rings. The owner opted for an engine overhaul, which restored the engine's performance and resolved the oil consumption issue. The cost of this repair was significant.
Preventative Measures and Conclusion
While TSB 06-059 primarily focuses on addressing existing problems, owners can take steps to mitigate the risk of excessive oil consumption:
- Regular oil changes: Using the correct type and grade of oil is crucial. Following your recommended oil change intervals helps maintain engine health.
- Proper maintenance: Regular maintenance according to the owner's manual helps prevent premature wear.
- Warming up the engine: Before driving aggressively, allow the engine to warm up, especially in cold weather.
TSB 06-059 highlights a significant issue that can affect the longevity and performance of Honda vehicles. Understanding the symptoms, diagnostic procedures, and potential repairs is critical for both owners and mechanics. Always consult a qualified Honda technician for diagnosis and repair of any engine-related problems.