I've not noticed any smoke at all at any point tbh.just another thought, hard to check but what are the smoke signals while experiencing the power loss, lean, medium, heavy or no change. you could always run a flexi hose up to the drivers window lol
@IRLGW , I drove this morning without the fuel cap fitted and that seems to have done the trick as far as I can tell, but it's a bit early to tell and I don't want to jinx it. I've stripped the fuel cap and it didn't seem too dirty, but I gave it a scrub and clean anyway as it couldn't hurt while I had it apart. I'll drive it to work on Monday without the cap fitted and then home again with the cap fitted and see if there is much of a difference and report back in due course.Wasjust thinking if it was turbo related then you would likely be getting more smoke thats all.
@Grimbo Noted! I'll swap it out just in case, thank you.Looking at your picture of the fuel filter head on the vehicle and more specifically the fuel hose with the jubilee clip....... one problem that can happen is by nature a jubilee clip does not have an equal clamping force round 360 degrees .....better to use a proper fuel hose clamp....I have seen jubilees cause intermittent problems on fuel systems despite being tight .
@frank rabbets I crawled underneath and found the breather line where you said. I removed the breather valve and from what I could tell, it had been installed back to front. I went for a drive without it fitted and no dramas then put it back on the way it had the least ammount of resistence when I sucked on it, therefore allowing air to be sucked into the tank and no issues when I took it for a drive again. So fingers crossed that is the end of it.P.S. There may well be a one way valve in the breather hose system to stop fuel coming out of the pipe and only letting air flow one way into the tank.