Hello, I have a cutting out issue with my Bongo V6 2.5 petrol, I have been though everything checking and testing, Replaced the O2 sensor, crankshaft sensor, new ignition coil, new plugs and leads. But it still cuts out after about 45mins to 1 hour, once it cuts out, then it doesn't start again ...

Hello i am new here and i was wondering if anyone, has replaced the hydraulic mechanism for the valves, as i believe these are what is causing the noise.