New project

[northerner]

Right got it all back together and did an oil change as it was like Black sludge and kind of runs weird. At Idle the engine doesn't seem to run smooth. So I whipped out the plugs and found that No.2 doesn't look like its firing properly. So I did a compression check and found

1 - 10 2 - 8 3 - 10 4 - 10 kg/cm2

The book says std 11.77 or min 8. I drove it and its drives quite well but no.2 has me a little worried. Anyone got any ideas ? maybe HG?