You can find and replace only the faulty coil https://www.youtube.com/watch?v=fnYUQh23p7Q Use only Bosch, maybe order 2 to have a spare one. Be sure not to drive with the misfire or at least undo the injector on that cylinder It is indeed important to inspect the plugs, because worn ones will cause ...

Were there other codes in addition to cylinder misfires? I made the mistake of ignoring "IAT sensor circuit" code on my BMW when it started misfiring, thinking it was complaining about the sensor that tells me how hot it is outside. I got busy swapping coils around, then noticed a loose co...

The gasket on the cap may be leaking (pretty common). May try a new cap (I got a similar gasket from a hardware store instead) https://www.fcpeuro.com/products/volvo- ... -8692888oe

I had to deal with oil on top of the valve cover when I swapped in an engine from a junkyard donor. I actually noticed the same oil pooling when the engine was still in the boneyard, but chalked it off to PO topping off without a funnel. I washed the engine off really good before dropping into Astri...

.......I replaced the plugs which were very worn and the coils and car runs like a top. Will have to likely replace the PCV system in the near future... - You probably did need to replace the coils. But anyway, now you have 5 spare coils. Keep the old ones as spare or sell on ebay LOL. - The oil on...

Just had this issue in my 07 - it was the ignition coil and spark plugs. It was driving rough (shaking when approaching high speeds). Driving great, $1,100 later, but now time to worry about the timing belt!