White Smoke under load

[doka404]

Is it worth putting a liquid injector cleaner in the tank. I don't think these replace a proper injector clean but might be a diagnostic help.

Its had a couple of tanks with Injector cleaner (Liqui-Moly stuff) over the last 5000km so don't think that will make much of a difference..im just hoping its something like IP timing/Injectors or if I am really lucky (which I doubt) just a bad filter..don't need an expensive IP pump rebuild or Head gasket right now.