Compression might read very low due to the cylinder being washed if the injector is stuck, too. Might mislead you a bit.
How hard is it to lift the injector rail and see if the injector is drooling?
Compression might read very low due to the cylinder being washed if the injector is stuck, too. Might mislead you a bit.
How hard is it to lift the injector rail and see if the injector is drooling?
If the motor has had a bad injector,
Change the Oil!
If it has injector clips you may be able to pressurize the rail with the injectors out. to check for leaks. Lay a strip of cardboard under the injectors as a tattle tail, no leakage is tolerable.
Update time and more WTF.
verified there is in fact spark at all four coil sticks. Moved on to injectors. I can definitely hear rhythmic ticking from each one. My buddy can't find his stethoscope and I got off work too late to buy one. I unplugged the cyl 2 injector just to be safe though.
Moved on to compression testing. Cyl 1? Kinda warm engine. Didn't want to flood the cylinder and bend a rod like someone mentioned before. It was 120psi max. A little low... and that's not even the cylinder we were worried about. 
cylinder two, thread compression tester in. Crank over. Check gauge. Nothing. No psi. Pull tester out. And this crap came out on the tester threads:
that's a helicoil. Pretty sure it's supposed to be locked down inside there. Great. So, either that is the reason for no compression, or, coincidence.
I'm gonna keep going here. I don't have an fancy loctite for this to put it back in. But I believe a new engine or head might just be in the cards. This poor car has been raped and pillaged by the former moron. Current moron gets to deal with it...
Yikes! That might do it...
Now, learn me helicoils. I've never used them. I'm currently watching some videos on them. I need special loctite right? And I should probably use a new helicoil to ensure everything is right. Right? Right!
That is a timesert, not a helicoil. It coming out is an inconvenience, but is very likely not the source of your misfire. You need to lift the head and see where your mechanical failure is. The new timesert can be installed properly at the machine shop as they are grinding the valves.
In reply to Streetwiseguy :
How do we know the lack of compression wasn't from the timesert coming out? That would prevent compression, no?
Was the compression tester screwed into the hole?Could you feel a bunch of air blowing out past the end of the tester?
In reply to Streetwiseguy :
It sounded different when I was cranking during the cyl 2 test. I had to do this by myself, so I'm not sure. I'm going to put another one in and see what happens.
If you've every cranked an engine with a spark plug out, that's what it would sound like if the thread insert was causing your compression reading. Basically, it would have to be threaded ALL the way out and not even engaged to leak faster than a 3.5" piston can shoot upwards, and you would hear it even if you were cranking another car parked 3 spots away, maybe even with the windows up. It sounds more or less like pulling the trigger on a blow gun briefly. 
Did you try to swap injectors from another cylinder to see if the misfire follows the injector?
Have to isolate the cause. Fuel, spark, compression. Fuel is easy to check by swapping the injector. You need to take a breath before jumping right to replacing the motor.
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