Evening ,please can someone help me with this , the butterfly valve on my 2003 1.2l fiat punto mk2 throttle body doesn't close properly , poss leading to rough idle issue , should it be totally closed ?, the torx screw it preventing it from closing fully , to be honest i don't think any air is getting in , I'll adjust it if needed , it's just a few degrees off being closed ,thanks in advance
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