Rep Power: 712

My civic is putting out to much CO on emmisions

Q. If i trun down fuel presure will this help??
Q. What is correct presure for 91 civic hatch si

thanks in advance

 
Rep Power: 746

I wouldn;t personally play with the FPR as i don;t think you will acheive desirable results from it in this case. Last time i did a pressure test it was suppose to be at around 28-30's. If your pressure is a bit higher then spec you shouldn;t worry, but it is lower then spec you may have some other problems... Leaking injector, fpr, possibly pump issue but most likely not.