What is the name of the part with PA66-GF33 stamped on top of it?
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It is a 2000 Ford Focus with a SOHC. The part seems to have some type of hard plastic hose connected to it which has broken loose and makes a hissing sound. Since it broke, the engine sputters and stalls. The part has the number PA66-GF33 on top of it.
Can you describe where on the engine this part is connected?
Do you see it in the this picture?
It is a round canister with some sort of sensor on top. It is mounted to the left of the engine compartment on the firewall, just behind the power steering fluid reservoir.
The hissing noise is a engine vacuum leak which is makeing your car run lean so its trying to correct this by adding more fuel.
The part your describing is the canistor purge valve.