Intake removal
&
Oil
sensor
or
check valve replacment (P1416)
Do not be intimidated. It is easy. Just disconnect some hoses and
connectors. Then you remove the bolts holding the intake.
It takes a pair of pliers, flat screw driver, 8 mm socket and
1 1/8 deep socket.
If you replace the check valve, you will need a 22 mm and 1
inch wrench and maybe a 10mm socket.
-Jack the car
-Drain
half of a gallon of dexcool
-Remove the coil pack cover
-Remove
all the hose and connector circle in green.

-Continue
removing the connectors and hoses circle in green.
-Push
on the metal clip to disconnect the injectors.

-Continue to
disconnect the hoses and connectors circle in green.
-Push
on the grey clip to remove the vacuum hose.
-Do
Not remove the fuel lines circle in bleu. The hoses are long enough
to move the intake forward enough to replace the oil sensor
or the air pipe.
-Remove
the 10 8 mm bolts holding the intake. And move the
intake forward 6 inches.
-Clean
the intake and heads contact surface. I use brake cleaner.

-When you
pull the intake forward a bit, then disconnect the MAF
connector and hoses coming from the brake booster.
-When
you pull the intake forward, the small hose circle in green will
be disconnected. Do not forget to put it back. This vacuum line
controls the AC doors.
-When you are
there, you can do your work.
-Disconnect
and remove the oil pressure sensor. I used a 1 1/8 6 side
deep socket.
-Install
a new sensor and torque to 15 ft lbs.
-If
you replace the check valve, you may have to remove the tube if
check valve is jammed. Disconnecting
the air pipe from the tube took
longer than removing the intake. I had to remove the passenger air tube
to be
able to heat an then I was able to remove the air pipe. I found that
the threads
were blocked by carbon. This is why I was unable to unscrew the valve.
Removing
the air pipe is easy. Only two 10 mm bolts on the exhaust manifold. You
do not
have to remove completely the other 10 mm bolts closed to the valve to
remove the
other bracket. There is a slot in the bracket, you just loose the 10 mm
bolt
and you can lift the air tube.

-You see
circle in red where the small hose connects to. I found easier
to remove the rubber elbow from the MAF and attach it to the small
hose. Then connect to the MAF.

-Put back the
connectors and intake. I put some electric tape to hold the two rear 8
mm intake bolts to stop them of going down, therefore, they do not
hold to the head holes.
-Torque
intake bolts 44 lb in first pass and 89 lbs in second pass using
the pattern below.
