Tacoma 4WD V6-4.0L (1GR-FE) (2006)
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1. Inspect the location where the Bank 1 cylinder head, engine block, and timing cover meet for signs of an oil leak.
2. Use an oil dye to confirm the source of the oil leak.
3. Remove and reseal the timing cover if confirmed leaking. Refer to the Technical Information System (TIS):
2005 model year Tacoma Repair Manual,
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Engine/Hybrid System - Engine Mechanical - "Timing Chain or Belt Cover Sub Assy (1GR FE(2WD)): Replacement"
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Engine/Hybrid System - Engine Mechanical - "Timing Chain or Belt Cover Sub Assy (1GR FE(PRE Runner/4wd)): Replacement"
2006, 2007, or 2008 model year Tacoma Repair Manual,
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2006/2007/2008 Engine/Hybrid System - Lubrication - "1GR FE Lubrication: Oil Pump (for 4WD and PreRunner): Removal"
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2006/2007/2008 Engine/Hybrid System - Lubrication - "1GR FE Lubrication: Oil Pump (for 2wd): Removal"
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2006/2007/2008 Engine/Hybrid System - Lubrication - "1GR FE Lubrication: Oil Pump (for 4WD and PreRunner): Installation"
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2006/2007/2008 Engine/Hybrid System - Lubrication - "1GR FE Lubrication: Oil Pump (for 2wd): Installation"
4. Confirm that the repair corrected the condition.
