It looks like an aluminum guard below the engine, just under the spark plug area.
Ford Focus 1.0 ST Line 2017
I hear some noise coming from it, so I think it probably needs replacing.
That’s the exhaust manifold heat shield. Also, that’s not a spark plug, it’s an oxygen sensor, or lambda sensor.
It’s part of the exhaust manifold heat shield, upper and lower. Below that is the downpipe heat shield.
Aki said:
It’s part of the exhaust manifold heat shield, upper and lower. Below that is the downpipe heat shield.
Thanks a lot for the info. That helps a lot!
Looks like your heat shield is broken… like mine was.
Quincy said:
Looks like your heat shield is broken… like mine was.
Can you explain a bit more about how it broke?
Is it the lower exhaust heat shield or the O2 sensor wire?
Just to clear things up, that’s the lambda probe, not a spark plug.
That looks like an O2 sensor.
Is it an eco boom?
Is it the 1.0 3L turbocharged engine?
Aza said:
Is it an eco boom?
Is it the 1.0 3L turbocharged engine?
“Eco boom” happens when people don’t change the oil regularly.
Wow, the rust on that part is crazy!