Type 85/fuel pressure regulator

Tue Oct 25 18:11:34 EDT 2005

I have been rewoking an 87 4kq recently and have come across faulty operation of FPR...is my understanding these don't generally go "bad" ; they obviously don't come apart(and Audi wants close to $300. )--so how do you clean one out .   Have taken care of cleaning up the ISV with some B-12 Chemtool carb. cleaner and it seems to have worked well .  One day -- EFI , but until then I need to work with what I have in the car.   Any insight would be appreciated        Thanks