Was wondering about a rough idle so i pulled the plugs and this is what i got

1=190
2=180
3=190
4=195

miles 123,000

I know 2 is lower then all the others but does anyone think that would cause a steering wheel/seat shaking rough idle?

 

engine mount a bad shock maybe a half shaft, is yours an auto or manual

 

How old are your plugs? Out of sheer boredom and frivolous experimentation, I have already replaced mine twice, and the car ran noticeably smoother.

 

Compression numbers are fine. Generally if they're over 100psi there's enough compression to fire at idle without a misfire. That doesn't mean everything is fine, it just means you won't have a misfire due to compression. Did all plugs look the same?

 

Do you have a CEL? O2 sensors seem to go often on these cars and I believe can cause a rough idle. There are several threads about this as well.