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Now I've recently bought this 172 that idles rough , and occasionally cuts out . The idle is very sporadic and feels like a misfire slightly. However the car pulls very hard through the rev range . The previous owner (friend) had been told the vehicle had uprated cams in and that's why it runs...

So washed my 172 engine today , developed a heavy misfire straight after , though maybe if got the coil too wet , dried all that and leads , stil missing , removed inlet manifold spark plug wells full of water , again cleaned and dried and refitted . Still misfiring . Anyone else got any...

So I've just bought a 172 that runs rough at idle , it has a k and n filter fitted , but just before the throttle there is a nipple for some sort ov vacuum hose that isn't connected/ is missing , could anyone help me as to where this should run too ??