Back in the fall I tried to replace the PCV valve on my 96 zetec engine. All was going well until I stripped the security screw that holds the pipe connected to the engine block that holds the valve. I do not know what to do about it, my car has a terrible Vacuum leak and I suspect that it is coming from this area. My car gives code P0171, severe loss of power, and sometimes surges. Any ideas on how to fix this screw?
