Your gas/air mixture is too lean. Adjust your carb to be more rich.
O2 sensor in the exhaust manifold near the engine
follow your exhaust from your exhaust manifold and you will find.
your oxygen sensor should be located on your exhaust manifold or on the exhaust pipe near the exhaust manifold, Make sure your engine is cool before placing your hands on the exhaust manifold, It can be very hot!
you have 3 of them ,1in each exhaust manifold and 1 in one of the pipe leaving the exhaust manifold.
It is in the driver side exhaust manifold.
It is screwed into the exhaust manifold.
the exhaust side is by the exhaust manifold,intake side is next to fuel injectors.
under the intake manifold
The PCV valve on a 1987 Toyota Corolla FX16 is located behind the alternator. It is under the intake manifold.
The 1987 Toyota Pickup came equipped in two 2.4L variants between turbocharged and naturally aspirated. This application has upstream sensors (Position 1), that is they are located on the exhaust manifold before the catalytic converter. The OE replacement O2 sensor is AC Delco #213119.
asuming the vehicle has a 4 cylinder, the exhaust manifold would be facing the radiator. 6 cyl. would also have one facing the firewall. You can figure it out simply by tracing your exhaust system from back to front. tail pipe - muffler - exhaust pipe - catalytic converter - exhaust pipe - exhaust manifold - engine.
The CA20E Engine has one oxygen sensor installed in the exhaust manifold.