Hi all,
1 - Thank you one and all for the replies and suggestions!
2 - Many apologies for the "run silent, run deep" Buried at work and spring chores and getting back onto looking at the computer after 10+ hours then chores isn't something I could bring myself to...
3 - I am kicking myself for not doing some other basic tests (like a compression check) or leak down. I do not have a leak down guage, but the root cause appears to be a failed cylinder 1. I see only ~60PSI on 1 and 180-210 on the other 3 cylinders. :-(
A friend (good friend) actually loaned me his bore scope. Not easy to use, at least for my first time. With the right angle mirror it seems hard to get a clear view. I could identify an open valve in one or another cylinder & the residual crosshatch is clear on tops of bore and sides, harder to see the lower "face" of the bores since the cable droops (I think.)
BUT after fiddling and playing around, I think the bottom face of #1 is smooth, no crosshatch remaining and also has some micro-pitting of the wall. Now that I've actually read the instructions, I'll go back in and see if I can take some pictures that show anything and I'll post them.
@brus brother I didn't swap, replaced coil and no change (this like everything else I tried was before I ran compression - I 's a dummy that way!)
@idosubaru * It wasn't using oil in any appreciable amount. My daughter was putting in about 1 quart / 6 month change, maybe 4k miles.
* I didn't check fuel pressure.
* Did notice that #3 was leaking at the rail, put some reman injectors in and will rebuild the ones I took out, test and save as spares. >> NO Change on #1 miss.
* Besides compression test, did run w/ vacuum gauge on intake. It was not stable - could see "vibration" in intake vacuum. Also, could hear the miss in the exhaust (stock mufflers) at idle.
NOW I will pull the engine. Don't think I'll try to rebuild - have too many other projects for that. This was an LKQ used engine. I have not tried a JDM pull before.
New Questions - (If I've not burned my bridges w/ slow update)
A- What are your thoughts and experience on JDM pull. My mechanic buddy that loaned me his snapon bore scope has a dim view on them. His comment, "if you knew you were going to have to dump it in x years, would you change the oil?" I think this is overly pessimistic 'cause I'd think you'd do enough required maintenance to keep warranty in effect!
B- Any recommended JDM dealer/source? I'm on US west coast, Oregon.
C- I'm seeing more 4th gen 2009-2014 engines now than 3rd gen 2003 - 2009.
i) Can a 2009 → 2012 (EJ25, pre FB25) work w/ my harness/ECU
or
ii) Is the 2009 → 2012 EJ25 long block compatible with my earlier SOHC EJ25 heads. I'll do head gaskets on any replacement so swapping heads if it will work w/ the long block and then fit in car.
I kind of hate to dump the car. The body is straight/no rust, have really new Toyo Observe on factory steel wheels and even newer Michelins in factory alloys. Just put a radiator in 4 months ago...
Thanks for all your help!
Cheers,
Tom