Well the misfire it wasnt the plugs for leads etc so i done a compression test 1=55 2=160 3=160 4=160 So we knew it was something more serious then leads etc so me and a mate started to strip the car down to remove the head Cams removed Finally head removed Loads of people on tgtt said that the piston or rings would have failed so i removed the sump and then the piston and conrod These were in perfect condition with no signs of damage we were a bit stumped. After a closer look at the headgasket i noticed it had cracked between 2-3 but the compression was perfect in both of those cylinders The general state of all the cooling system was piss poor tbh and then we noticed the thermostat was fucked and didnt open when i put it in boiling water. But the car never went over half on the temp gauge and hasnt used any water. I then inspected the head and noticed that around the exhaust valve on number on there was a crack all the way around and the valve didnt sit properly. So the head is scrap I managed to source another one from here that should be here tomorrow and then i can drop it off to be skimmed. Ive also ordered genuine headbolts and gaskets from camskill along with a new thermostat, cam seals so fingers crossed it will be back together on saturday. While im waiting for parts i cleaned to the fuel rail and inlet manifold and sprayed them in sliver. I cant wait to drive it again its only done 18miles since mot