Compression test. dry test, ie no oil added to cyl. 5 compressions per cyl.
#1 133
#2 124
#3 128
#4 135
#5 133
#6 122
values are plus/minus 5 or so...
I changed the O2 sensor and the MAP sensor. no significant change in performance.
when I drove the car about 6 miles to bring it home, the cat became red hot and it smelled hotter than a normal cat. I think that is because cyl's 1 and 3 are not igniting and the unburnt fuel is going into the cat. Now I am wondering if the cat was not already clogged do to this happening before I got it.
Next test. unbolt the exaust from the y-pipe and see if it breathes better...
A question about the distributor...
the base plate on mine is slightly warped, it apears to be because it is aluminum and was pressed on the the dist body... this causes the dist cap to not sit just right, it can be rocked slightly and who knows if it is just right with the screws tight... has anyone else noticed this on their Fiero?