4x4
10mm or 12mm metric 10mm or 12mm metric
According to Chilton's, the Specification for the Spark Plug Tube Nuts, Which bolts the valve cover on, is 33 lbs. The socket size is 30mm. However, I was told by a friend of mine who is a mechanic that he tightens them at 20 lbs.
First locate the valve cover. If the motor is a 4 cylinder there will only be one valve cover. If it is a 'v6' it will have two as well as v8 automobiles. With a Socket wrench and extention locate the valve cover bolts that go around the cover bolting it to the top of the engine (cylinder head.) Usually the valve cover will have the 'Oil Filler' cap on it. (Where you add oil to the engine...) With the correct size socket remove the bolts that hold down the valve cover. Lift the valve cover up and away from the cylinder head. You may need to strike it with a soft mallet to get it to release. Once it's off you will see the rockers/springs. Be careful to keep the old gasket debrey from entering the rocker valley. With a razer scrap all remaining gasket from the cylinder head. Some gaskets have an "UP" side so make sure you look over your gasket for any indicators. Then apply your new gasket. Then put your valve cover back on carefully so your new gasket does not move. Slide the bolts back into place and tighten from the middle out. Tighten the bolts until they just about snug then move to the next opposing bolt. So Center, Bottom Center, Left, Bottom Left, Right, Bottom Right etc. Once they are all snug go back and turn the wrench another half turn to tighten them up. *Do Not Over Tighten The Bolts.* or damnage to the gasket or bolt breakage may occur. If oil leaks from the cover check for loose bolts or gasket breakage. Edit by Loosenut: Torque spec is 12lbs. for the valve cover bolts.
Generally on top on the valve cover or engine cover.
on the vin coad its the eighth diget on the vin plate if you dont have a vin if your valve covers bolt in the middle with 4 bolts it is a 305 if they bolt on the edges 4 bolts then it is a 350 That answer is wrong. A 350 has a 4" bore. A 305 has a smaller bore. All SBC made after 1986 have the center bolt valve covers, no matter what size motor it is. All pre-86 SBC have perimeter valve cover bolts.
You did not say what size engine but in most cases the PCV valve is in the valve cover.
size of motor
1/4 20 x 5/8
The idle air control (IAC) valve on a 2002 Toyota typically uses bolts that are 10mm in size. The exact length may vary depending on the specific engine model, but they are usually standard metric bolts. It's recommended to check the vehicle's service manual for the precise specifications and torque settings when replacing or reinstalling the IAC valve.
This will depend on the engine size. If it's a 3.0L then it's location in the right rear valve cover next to the firewall. All others have it in the left front valve cover.
It is on top of the valve cover.
It depends on you size of your engine, if its on like the left side of a 4 cylinder it could be the timing chain housing gasket or bolts loose or damaged, or in the front or back on the V6 it could be the Valve cover gasket or bolts loose or damaged