DENSO FK20HR11 spark plugs are used on the 2GR-FE engine, the gap between the spark plug electrodes is 1.0-1.1 mm
To replace the candles, remove the decorative engine cover
Disconnect the negative battery terminal
Draining coolant from the engine cooling system
Remove the intake manifold receiver assembly with the throttle assembly, as described in the article - Replacing the gaskets of the receiver and pan 2GR-FE Toyota Camry
We unscrew the bolt 1 fastening the holder of the oxygen concentration sensor wire harness
Disconnect the clamp 2 fastening the wires of the ignition coils
We unscrew the bolt 3 of the intake manifold receiver strut and remove the strut
Disconnect the wiring harness pads from the ignition coils and remove the coils from the spark plugs
Blow out the candle wells with compressed air to avoid dirt getting into the cylinders when turning out the candles
Unscrew the candles and remove them from the candle wells
Inspecting the candles and assessing their condition
Check the gap between the electrodes of the candles with a round probe.
The gap should be 1.0-1.1 mm. If the gap is not within this interval, replace the candle
It is forbidden to adjust the gap by bending the side electrode
When installing the spark plugs, we first screw them in by hand (with a wrench without a wrench), and then tighten with a torque of 18 Nm
Install all removed parts in reverse order
Replacing the gaskets of the cylinder head covers of the 2GR-FE engine
We replace the cylinder head gaskets when oil leaks from under the covers, if tightening the bolts fails to eliminate the leak
Remove the decorative engine cover and disconnect the negative battery terminal
Draining coolant from the engine cooling system
Remove the intake manifold receiver assembly with the throttle assembly
Remove ignition coils
Disconnect the wiring harness pads from the two valves of the variable valve timing system and the two camshaft position sensors located on the cylinder head cover whose gasket needs to be replaced
We unscrew the bolt-fitting of the oil pipeline to the cylinder head cover, the gasket that needs to be replaced
We unscrew the twelve bolts of the cylinder head cover, the gasket that needs to be replaced
Remove the gasket from the grooves of the cover
Clean the grooves of the cover and install a new gasket in the grooves
We replace the O-rings of the oil channels with new ones
Install the cylinder head cover and all removed parts in reverse order
We tighten the cover fastening bolts in the order shown in the figure. The tightening torque for bolts A is 21 Nm, the remaining bolts are 10 Nm.