darkstormcr

I have a 93 Civic DX. Had a B18C1 in it, removed due to the law, long story short I have a D15B7 again.

Well got everything hooked up. On initial turn key, engine cranks but no start. First thing I checked was firing order on the distributor (I usually get it wrong), found that it was one-off and fixed. Second turn key same result, sounds slightly better. Checked for spark - OK. I have a new distributor, plugs and wires. Checked for fuel - OK. Pushing ~40 lbs as normal. No CELs through this whole process.

Went on to check compression. Cylinders 2 and 3 are both 190. Cylinders 1 and 4 are both 60. Since I had new plugs, I took notice that the plugs from 1 and 4 were 100% clean and 2 and 3 were slightly discolored (normal). Could timing have something to do with this? I would imagine timing would affect 1 through 4 entirely. I did 1 and 4 with a bit of oil in them and no change in compression results.

Thoughts?

j4s0n1337

Timing could be off, but most like it's not. If the oil didn't change it then the piston rings are good. Do a leak down test, it's probably your valves.