Tapping noise from cabin

[Nickwillyhams]

When the engines ticking over an I'm sat in the car I can hear a faint tapping noise from the engine bay, I can't hear the same noise lifting the bonnet? Not much to go off I know but does anyone have any ideas what it could be or if it's even worth worrying about

 

[MartinR]

They all have the sewing machine noise.

 

[MicKPM]

Charcoal canister

 

[peanuthead]

Charcoal canister

100% agree. Bloody annoying. But you can pull of a tube, block it and problem solved

 

[Nickwillyhams]

172hp sewing machine pmsl. Ah nothing to worry about then, cheers lads!!

 

[Coops Mk1]

170hp, 172ps

 

[Nickwillyhams]

Someone's stolen three horses!! Fookers haha any difference for a cup? Maybe 1-2hp?

 

[Coops Mk1]

nope, the 172/182 refers to the French use of PS instead of HP for engine power ratings that's all.

 

[lemonnobby]

169 bhp for 172

 

[MicKPM]

They're always strongest just before they go BANG (Apparently) hehehe

 

[Nickwillyhams]

Charcoal canister

Why does it click Mick? Is there a solonoid or something in there?

 

[MicKPM]

Yes its the fuel vapour/anti-pollution removal setup and the noise is normally from the purge valve activating.

Normally happens when the engine is warm and is stood idling in traffic. Revving it above 2k usually stops ot from happening for a few seconds.

 

[Nickwillyhams]

That describes my symptoms exactly, I was only ever hearing it arriving/returning from work when the car was warm. Cheers

 

[MicKPM]

For some reason it is nearly always 172 Cups that do it. Open the bonet and the noise isn't there. Back in the drivers seat and it sounds like the timing belt area and s***s you up. Put your ear to the drivers front wheel and you'll hear it ;-)

 

[lemonnobby]

Just but the drivers headlight i find best.