Repair Manuals 10% off sale (instant download): \r
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REQUIRED REPLACEMENT PARTS: \r
Valve Cover and Gasket Set: \r
Black or Grey Silicone Gasket Maker: \r
Torque Wrench: \r
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Valve Cover Gasket Replacement - Nissan Altima 2003 2.5 SL\r
Engine oil inside the spark plug well is a fairly common issue due to leaking spark plug tube seals. This can be a reason for cylinder misfire. OBD Codes: P1320 and/or P0300/ P0301/ P0302/ P0303/ P304 / P0305 / P0306 / P0307 / P0308. When spark plug well gasket wears out and starts leaking, engine oil gets inside the spark plug well and eventually leads to cylinder misfire. \r
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