Repair Manuals 10 off sale (instant download): \rbr\rbrREQUIRED REPLACEMENT PARTS: \rbrValve Cover and Gasket Set: \rbrBlack or Grey Silicone Gasket Maker: \rbrTorque Wrench: \rbr\rbr\rbr\rbrValve Cover Gasket Replacement - Nissan Altima 2003 2.5 SL\rbrEngine 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 andor 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. \rbr \rbrShare this video: \rbr\rbrVideos provided on this channel are intended for informational purposes only and cannot be held liable for any injury, damage, or problems that arise when trying to duplicate steps shown in these videos. \rbrThis information is provided “as is” without any representations or warranties and should not be treated as advice. \rbrThis information is not guaranteed to be accurate.\rbrDo it at your own risk.