it may be one of your vacuum lines leaking and returning to the atmosphereic pressure The hissing noise could also be coming from an exhaust emissions part. This part is located on the fron right portion of the motor. I dont know the exact name but it attaches to the motor exhaust with two bolts, feel around this part when running, and see if it is leaking any exhaust from it.
A manifold leak is usually in reference to a failure of the intake manifold gasket. It can leak air, oil or coolant. It can leak to the outside of the engine or internally into the engine. A manifold leak may also refer to the Exhaust manifold that is leaking exhaust fumes from a bad gasket or a crack in the manifold.
It is connected to the pipe off the exhaust manifold in the bottom outside of the car.
Air pressure difference between the heat at the manifold and the relative cold outside. The manifold can get very hot, which increases pressure towards to outer, cooler, opening. Also, the pressure of more exhaust gas being pump into the manifold from continued combustion from the engine.
It could just be condensation which forms in the exhaust system outside of the engine, or you could be leaking coolant into your engine (typically via the head or intake manifold gasket).
No, there is one on the exhaust manifold near engine and the second one is just past the catalytic converter. Two total.
From the outside it looks like a muffler. It's on the exhaust pipe, in front of the REAL muffler and behind the manifold.
outside to outside of pipe.
It depends on the outside temperature, the vehicle and the compressor but it can be between 38 to 43 degrees..................
It could be any one of the following: 1. The fan motor is overheating and is shutting down on overload, which will cause the compressor to shut down via the high pressure switch. 2. The compressor is getting too hot and is shutting down via the thermal overload switch. You need to determine if the fan and the compressor both come on at the outdoor unit. If you are getting cold air inside the house, the compressor is probably running. It generally takes longer than 1 minute for the fan to go out on overload unless the bearings are shot, then the fan motor could seize up and shut the compressor down on overload. You should have this checked by an HVAC tech.
If the fan outside is not running the compressor will overheat and if the fan inside the house is not running the compressor will get liquid refrigerant back to it and lock up! Neither is good for the compressor.
Assuming you mean the outside of the compressor, no. The gasoline (petrol) may damage the seals. And don't use gasoline to clean the inside of the compressor either.
Usually compressor not running or low on refrigerant. And yes it is supposed to be warm