Hissing Sound coming from engine?

Asked by Bobby2131 Jan 09, 2017 at 07:27 PM about the 2006 Scion tC Base

Question type: Maintenance & Repair

When i start up my 2006 scion tc, the engine makes
a strange hissing sound. its Never done this before
and i dont know if theres a leak somewhere or if
somethings frozen

1 Answer
224,145

Rowefast answered 7 years ago

A hissing sound usually comes from a plugged catalytic converter. May want an exhaust shop take a look.

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