Maybe insignificant, yesterday I got two backfires when going slow, thought that's a bit odd, barely does it but has done it before under similar conditions. Today I went to leave some traffic lights and it started to die out but drove fine, next set of traffic lights same thing so went home and had a little try pulling onto my drive it does it also which is slightly uphill. I could hear it kinda backfiring or missin on tickover through the exhaust, so I had a look under the bonnet I felt my coolant hoses they felt pretty hard but it was hard to check thoroughly as they were so hot! Took the rad cap off with a towel and lost a load of coolant. I pulled off the ht leads one by one, they all made the engine run like crap so my thoughts are possibly coil? Or fuelling? Watching my wideband as I was trying to pull away and it seemed to head towards the leaner scale. Under boost it didn't miss, it's not seemed to lose any coolant, temperature stayed towards 1/4, no real white smoke, no petrol smell in coolant. What should I check my first thoughts are maybe injector fuel pump fuel filter coil. As for the hoses thermostat, hg at worst, or maybe I had an air lock? If anyone can tip me I'd be really thankful cheers