Alfa Romeo Forums banner

1 - 1 of 1 Posts

·
Registered
Joined
·
6 Posts
Discussion Starter #1
There's a thin sheet metal butterfly valve in the air intake which is actuated by vacuum. The vacuum pulses at idle which causes the valve to pulse open and then snap shut with a clank. So at idle you hear this clank clank clank coming from the airbox. I don't think there's any vacuum leak, I've replaced the hoses. Any suggestion appreciated, thanks.
 
1 - 1 of 1 Posts
Top