16 valve TPS Question

[Oscar]

Hello again, I’m finally back with the vehicle. Immediately did a compression check on the motor per your direction. Motor installed and has 8-10 heat cycles and about 10-15 miles of driving just to seat the new rings. Results: 1,2, and 3 all at 205...4 is at 165!!!(and 175 wet). Sure wish I would have checked before installation like you do!!! Quick backstory on the motor. Bought a 1993 sidekick as the donor. Drove that car for over a year as I did everything else I wanted to do to the Sammy. It ran pretty good, not great and was getting pretty rough before I pulled the motor. First build, the mechanic(I use that term loosely for him now!) found a bent rod on number four and a crack in the block between 3 and 4. Sourced a new block and he built the motor. The car had issues at the smog referee after I installed that motor (that was when I found this forum and started working towards a solution for the high nox with your help). Regretfully, I didn’t check the compression on that first rebuild until well into the process at about 1K miles(as mentioned previously in the thread). That test was: 210 on 1-3 and 170 on 4...suspiciously similar to what I just found today on the newly returned motor. (Sorry for the bad info earlier about 3 also being low...didn’t have my notes with me)
I am going to do a leak down on it tomorrow and see what I can find
I did check the MAF per your direction in the previous post and it is within spec on all tests.