i check my pressure again by removing the spark plugs and all read about 175 psi

 

could it be the knock sensor?

 

Dude, check the ignition module.

See the ECS link here

I think this is your issue.

 

your taking shots in the dark here, the OP is not posting accurate information so we really cant help. im wondering if you actualy did a pressure test (if at all -correctly) or just made up some numbers and posted them here. you really cant mess up a compression test. you screw the tool into the spark plug hole, turn the engine by hand, and measure the highest pressure you see. you origionaly said you had 100psi in #2 cyl and 150 in the others. now that i told you what your supposed to have, did you just adjust the numbers you made up to seem like they are correct? and no the knock sensor does not cause misfires.