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Changing Your Valve Cover Gasket and Spark Plugs
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Changing your spark plugs is very easy and I'd say anyone can do that. The valve cover gasket is a little bit more daunting but is also a fairly easy one to do yourself. Give yourself a couple of hours and takle it. If you're doing this the first time budget about 3 hours for this job. Take your time and make sure not to drop anything in the engine bay (I seem to always do this so learn from my mistakes because things are very hard to find once their down there.)
Metric Socket Set With Sparkplug Socket
Microtorque Wrench (Capable of going from 5-25 ft-lbs is a good)
T30 TORX Socket
OEM Valve Cover Gasket (BMW P# 11-12-0-030-496) $27
High Temperature RTV Sealant
Optional Parts Needed (These are optional because you don't have to get any of these but I reccomend them since you're already doing the job.)
6x OEM BMW NGK Spark Plugs (BMW P# 12-12-9-071-003) $15
Anti-sieze lubricant for Spark Plugs
15x OEM Rubber Bolt Gaskets (BMW P# 11-12-1-437-395) $1
(If you think you might break a bolt or a stud, you might want to order one or two extra studs/nuts)
Valve Cover Cap Nut (Includes washer and rubber gasket) (BMW P# 11-12-1-738-607) $2
Valve Cover Stud (BMW P# 11-12-1-718-856) $0.50
Valve Cover Gasket Instructions
Note: If you want to just do your spark plugs, skip down to the spark plug section below!
Spark Plug Instructions
Note: If you want to just do your spark plugs, follow the first two steps above to remove the air filter box, engine cover, and coils only!
This is a fairly simple to complete DIY, and it will keep your engine running healthy for a long time. I reccomend changing your spark plugs betweeen 60-90k just to make sure everything is still running well. While you're doing that, you might as well change the valve cover gasket, because it's going to fail sometime in the future! Happy motoring!