159 knocking diagnosis help -stuck between garage & hard place
My 2008 159 JTDM is making a knocking noise from the front passenger side. It happens when trundling up to 30mph (worst at 20ish) over bumpy surfaces, which is basically all 30mph roads in England at the moment. Above 30mph it doesn't seem to occur or I cannot hear it, maybe because the roads are better surfaced for higher speeds.
I have put it in to two indies now, thinking it would be obvious to them. The first couldn't find fault with anything and said there is a small amount of play in the steering rack so it could be that. The second, Day & Whites the Alfa specialists at Brands Hatch couldn't pin point the problem, changed the drop links on a punt (no improvement, bye bye £150) and told me that the next thing to do would be lower wish bones or shocks but made no mention of the steering rack.
Any advice/experience/thoughts to help pin pinpoint the issue would be greatly appreciated.