Ugh, I worked ALL DAY on the one Syncro I am trying to drive right now. Yesterday, the car started up cold with a dead miss on one cylinder. As I drove to the shop, the miss occasionally went away, but it stayed with me to some degree most of the 15 mile drive.
I got it to the shop and started testing stuff. Pulled each plug as the engine ran to check for a dead cylinder. Each time I pulled a plug, the engine reacted exactly the same--it came up missing that cylinder as though it were an active participant in making power.
I started to pull injectors to test flow. #1 broke. #2 came out and left the stainless air shroud cap in the injector insert. Numbers three, four and five also broke.
So, I had to remove the intake manifold. Joy.
Removed intake, cleaned out petrified o-rings, replaced the one insert I broke trying to extract a broken injector with the IM on. Put it all back together with good used injectors. Miss was exactly the same. Pulled injectors again to inspect patterns. Perfect. Reinstalled injectors, installed new spark plugs. Same miss.
Compression, which I tested three times yesterday, shows 150 PSI on all five.
Today, I will give it cap, rotor and wires. If that doesn't work, I will pound it into a lump with a sledge hammer, set fire to it and dance around it "like a wild injun."