Hey guys, I’m unfortunately finished with my Latin. I’ve been a proud owner of a MX-5 of the 2nd generation for about a year and love it very much. However, with the age of course come some problems that you can always get solved in Google. Nevertheless, I have to create a topic now because unfortunately I find nothing to do with it. My little MX5 has always had start problems in damp weather, which fortunately solved by cleaning the throttle flap and a new petrol filter However, it runs the first 10 kilometers very rough and without any power. It also often starts rolling after 3-4 seconds. Spark plugs everything is new, so I thought that I would just do a compression test to put the problem on the pellet. Said done and problem recognized immediately. So if the engine warms up after 20 min or 30 min service life after longer driving, the cylinders have the following bar values: Cylinder 1: 6 Bar cylinder 2: 11 Bar cylinder 3: 12 Bar Cylinder 4: 10,5 Bar Now my first thought was piston rings on the 1 through however, if you measure it directly after the ride the values are very normal: Cylinder 1:11 Bar Cylinder 2:11 Bar Cylinder 3:12,1 Bar Cylinder 4:11,1 Bar So was measured once again with completely cold engine that stood overnight. There were the values so deep that it is a miracle that it still starts. All cylinders were at 4 Bar except the 1st this was at 2,5 Bar. I have also already tested a swallow OIL to tilt into the combustion chamber and thus the cylinder 1 comes to 8 bar with lukewarm engine. The others are unchanged. I guess it’s probably the piston rings, however, I’m surprised that the values are so perfect when it starts running for a while. Does anyone know what I can still do at this point without taking the engine apart? Every tip would be helpful and thank you in advance!