I just bought an 85 GT two weeks ago that hadn't started for 2 years due to a bad fuel pump. Just got the pump and cleaned and sealed tank back in today and after a few tries the car started and is running but missing. It idled a little better after a few minutes but is still missing, I am thinking the injectors are probably clogged. When under the car I saw a 1/2 inch pipe close to where the fuel pump connector on the firewall is that is open but looks like its supposed to have a hose on it and I see another open pipe the same size over by the air cleaner. Can someone tell me what this is and if the two are supposed to be connected? Thanks
Like Tinkrr said in the above mentioned thread, it used to be the fresh air pipe for the PCV system, but the PCV system was modified as part of a recall. So now that pipe is just dead weight. You can remove it, if you want.
^^ No you cannot remove it completely because the EGR feed tube still goes into it. The EGR feed tube is welded to the larger original PCV tube, so unless you take it apart and break the welds you're stuck with it. That's why GM simply just capped one end of it.
The big PCV tube should be capped on the passenger side of it Csjag. It's supposed to have a rubber cap installed over it. You have to seal it because the other end (is supposed to) still go into the air filter canister on the backside of the canister. If you remove the bolt holding the air filter canister, you should see the hose still attached to it on the backside.
A quick historical note; The original intake and PCV system that shipped with all early V6 Fieros was recalled around mid-production. It used a different design intake tube and front PCV setup. Most every V6 Fiero was serviced under the recall, but a very small few did not get serviced, so very often the pre-recall intake and PCV setup comes up in Fieros and it can confuse people as to why it looks the way it does.