Hi, Looking for a wee bit of advice, I've got a 182 which has a very slight miss fire on idle, car drives fine but comes up with p0301 cylinder 1 miss fire.
Ive tried new leads, coil and swapped the plugs around, miss doesn't change cylinder when doing this. I've done a compression test and number 1 is around half a bar (7psi) lower than the rest, this was done with inlet plenum removed and all plugs removed. Iirc the compression in number one was 12.5 bar (181psi) and the rest were 13 bar (188psi). If I remove no1 plug lead the miss gets worse and if I remove no1 injector plug it also gets worse.
Can anyone advise on common faults or what to check next?
Thanks
Richie
Ive tried new leads, coil and swapped the plugs around, miss doesn't change cylinder when doing this. I've done a compression test and number 1 is around half a bar (7psi) lower than the rest, this was done with inlet plenum removed and all plugs removed. Iirc the compression in number one was 12.5 bar (181psi) and the rest were 13 bar (188psi). If I remove no1 plug lead the miss gets worse and if I remove no1 injector plug it also gets worse.
Can anyone advise on common faults or what to check next?
Thanks
Richie