While servicing my 90 model chev with TBI, I discovered there was no vacuum at the PCV valve. The hose was open back to the TBI port, but stopped up solid in the TBI vacuum port. I have punched it out with a screw driver and sprayed a full can of carb cleaner in it, but it is still plugged. Does anyone have a better idea about how to clean it? What are the pit falls to watch for if I have to remove it? What are the chances of messing up the TPS
It must make a 90 deg turn and I have it cleaned out to the turn. I am thinking I will have to remove it and come in from the other side. What do you guys think?