2010 Altima, 2.5 L---steps to change valve cover gasket (#4 cylinder has oil in it) already bought a new coil, plug & gasket. Looking for the steps to remove/put back together...Cannot find any post showing a 2010 2.5 Altima on-line.

SOURCE: Leaks oil looks like from valve cover

You have to remove the spark plugs cables and remove the four nuts that you see when the cables are removed.

When the four nuts are removed, simply raise the valuve cover. When replacing the gasket, make sure you get the gromets as well. Those sometimes get worn or crack since they are more exposed than the value cover gasket. Make sure that you clean the cover from oil and replace the gasket with no use of silicon.

Good Luck.

Jim London

• 257 Answers
• Posted on Feb 25, 2009

SOURCE: 98 vw beetle misfiring after rain. New plugs, coil cas cracks????

Hi, Yes it certainly could be especially if water gets in. You should also check the distributor cap. The misfire sounds like an arcing problem so it would have to be one of those two things since you changed the rest. Good Luck!

SOURCE: my number 2 cylinder

it sounds like you just have too much oil in there to begin with. I'm unsure on how the valve cover gasket would affect the spark plugs in this case.

SOURCE: Changing spark plugs on 2007 Hyundai Sonata 4 cylinder

You are correct. The plugs are accessed below these coils. Disconnect the coil connectors and remove the 4 10mm bolts which hold the coils in place -- then you'll have access to the plugs. Here's a pic

By the way, how many miles on this 2007 Sonata? You know the powertrain is under warranty (1st owner 100,000 miles). If you're having problems, have Hyundai dealership diagnose it and fix it under warranty.

SOURCE: 2002 Subaru outback was idling rough and sometimes

Could be the Idle Control Valve?