So this happened:
20180221_174357 by
Drew Bell, on Flickr
Which is the second occurrence the first of which RTP helped me clear and was a code w/ only momentary engine hesitation. This time around the Fozz was obviously missing the entire time. So it needed to be dealt with ASAP. Most of you know as well that my wife is the primary driver of the Forester so it can't be down for too many days w/o causing frustration so no options... If you've seen my other thread you'll know that my garage options are... not quite ready for automotive work so:
20180221_180157 by
Drew Bell, on Flickr
First get the washer reservoirs out of the way:
20180221_182530 by
Drew Bell, on Flickr
Then I could see the targets:
20180221_182356 by
Drew Bell, on Flickr
The plan was to swap the coil from 2 onto 4 to see if the misfire moved with the coil. If so I could be confident it was a new coil. ($140 at SOC, $50 on Rockauto for Denso) So I set to work.
#2 coil was a huge PIA to get to but with some finagling got it out. Coil #4 was MUCH easier as I was able to get the ratchet on there... of course I ended up loosening it too far with the ratchet and getting it wedged... angry yanking got it out eventually:
20180221_191123 by
Drew Bell, on Flickr
Speaking of Angry:
20180221_190540 by
Drew Bell, on Flickr
Finally got them both out anyway:
20180221_190621 by
Drew Bell, on Flickr
Of course you have to label the one you suspect is bad:
20180221_192746 by
Drew Bell, on Flickr
For Reinstallation I took the battery out to save myself some time and aggravation. The -23 was starting to get into my bones and even though I put down cardboard the toes were getting chilly as well. I also loosened up the clamp for the wiring for a little more flexibility and space:
20180221_201337 by
Drew Bell, on Flickr
Oh also when I removed the coil from #4 I noticed that the clip had been stripped, thinking it might have been from the last shop I had the car at unfortunately. So when I reinstalled onto #2 of course I zip tied:
20180221_203247 by
Drew Bell, on Flickr
This is a bit weird though. #4 wasn't the one that was misfiring so to see that it had a broken clip was surprising.
Then got coil from #2 onto #4:
20180221_203538 by
Drew Bell, on Flickr
Reinstalled everything after this and started it up expecting to have a miss on #4 aaaaaaannnnnnd... it runs like a top. No miss, smooth as a tickety old Subaru can be. In fact felt better than it has in a while... huh.
So plan is to leave it for now and during the spring tune-up when I've had time to place an order at rock auto I'll be getting new plugs, at least 1 coil to have on-hand as a backup. Having never done this on the Subaru I think it went pretty smooth for doing it with a headlamp and standing in the snow outside my shed haha. But does give me a little fire under the backside to figure out whether I can make this shed into something where the car can fit.