Sorted 😀 , It was stuck shims in the fuel injection metering head, for the past month i’ve been driving like an old “deary”, not taking the car above 2500rpm and sticking well below the speed limit to try and conserve fuel and i did get the average mpg up to 38.1mpg which was a vast improvement over the previous 25mpg when driven normally/with spirit.
It was entirely my fault for not ragging the tits off it that caused the shim stack to get gummed up, so i cleaned it all out and took it a quick run up the hill and onto the A75 junction, sat there a minute to get the engine up to 90degrees, checked the road for traffic, all clear either way for a mile so then pulled out and floored it to 7500rpm through 1st/2nd/3rd, utterly childish fun………. Bwaaarrrrp….Bwaaaarrrrp….Bwaaarrrrp…i tailed off when i hit 3 figures. the moral of the story is you can drive slowly and with care to preserve fuel economy but once on every journey rag the tits off it to prevent the metering head getting stuck – it is set up to be ragged so i’ll just have to exercise the right foot every now and then.
Phew!….i had visions of all sorts of expensive repairs…..