Ok I replaced the Orings in my 1994 12 valve it has a p7100 pump in it The Orings that go on the delivery valve housing. I put it back together making sure i replaced them in the same port they came out of .Now it idles terrible real rought . As i give it the peddle going down the road it seems to run ok but sounds like it knockes what did i do wrong? could use some help.

 

Did you touch &/or loosen the two nuts on either side of the delivery valves?

 

yes i took them .both loose so i could pull the housing off

 

You just messed up the calibration of each barrel. Send it off to a shop to have them fix it.

 

Damm i had better do it i didnt know they were set at a specifice place. thanks

 

The o-rings you replaced are just for keeping dirt out of the threads, they don't seal in fuel.