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Showing results for tags 'ticking'.
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Gave my bready a bit of an Italian tuneup a few weeks back and since then there has been an intermittent ticking from the engine bay when warmed up - loud enough to be heard inside the cabin but obviously much louder when under the hood. I traced it by ear (as much as you can with these slightly paranoid goose chases) to that little green valve attached to the back of the engine bay. It has a couple of hoses going to it (one black, one transparent), both of which go to that cansiter on the bottom-left of the bay and an electrical connection. The ticking noise can be 'felt' through the pipes close to the unit - I assume its a valve ticking open and closed? So the questions: 1) What is it? As far as I can see its something to do with the emissions control system 2) Is it knakered? 3) Any idea why it would be springing into this form of life after running the engine at 4k revs for 10 minutes? I mean the engine runs great, never been better, so whatever it is it isn't really affecting anything. Happy to ignore it but equally happy to fix it!