I think my coil pack(s) are giving me jip as most days if I'm driving at speed, say on a dual carriage way, and put my foot down a little/fully it hesitates and stutters and can be a pain when overtaking. It feels electrical, like a misfire. I have bought new plugs, but not put them in yet, and can you test the coil packs easy enough with a standard multi-meter??? What should I be looking for if you can??

 

if you are going to replace one repalce the lot speak to daid at api engines they are genuine subaru parts for good money £250 but no the ebay rubish

 

I had exactly the same problem! Both coil packs on the passenger side were cracked under the rubber boot. Replaced all coil packs and have never looked back Hope this is helpfull