How To Fix Oil Leak & Cylinder Misfire - Valve Cover Gasket Replacement - Nissan Altima 2003 2.5 SL

You can find required replacement parts & tools here:
Valve Cover and Gasket Set: https://www.amazon.com/gp/search/ref=...
Black or Grey Silicone Gasket Maker: https://www.amazon.com/gp/search/ref=...
Torque Wrench: https://www.amazon.com/gp/search/ref=...
OBD2 Car Scanner: https://www.amazon.com/gp/search/ref=...
(these are Amazon affiliate links)

Have any questions? Ask online certified mechanic here: https://trk.justanswer.com/aff_c?offe...

Valve Cover Gasket Replacement - Nissan Altima 2003 2.5 SL
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.
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