Sorry to bother you guys.
I have a 95 V8 LTD that I just got back from the spray shop for some minor repairs. I drove it out of the repairers and noticed its idle was a bit rough, but it was in there for a week so I thought it might just need a run. It was all downhill driving from there (Mundaring down to Swan View) so I did not notice the shocking idle. Once I got into Midland the idle problem reared its head and I had to stop in a gas station and have a look under the bonnet. There was what looked like a bit of smoke coming out from behind the engine and I was getting really worried. I limped it home and let it cool down. I started it up and noticed a hiss that I thought must have been a vac leak. I held a piece of hose to my ear with the other scouting around the engine and I found that most of the hiss was from under the upper inlet manifold. I ripped off the manifold today and found what looked like a dodgy vac hose and a possible leak from the upper inlet manifold gasket. The
PCV valve was also out of its socket so I guessed that was where the smoke/vaporized oil was from. I tested the
PCV and it worked fine, so I put some Ford Blue sealant on it and pushed it back in (sorry for the long winded explanation so far...... hang in there). I also put the same sealant on the manifold gasket. I put the top back on and turned the key expecting a nice idle but no, still a rough idle and the same hissing sound from under the manifold. I've been searching the net this evening for possible solutions and I've been scouring threads to see if anyone has had the same problem. The only thing I can think of doing now is to call work and take the day off, and then run it in to Ford in Midland to get a diagnostic check on it to see if any sensors are naffed. Maybe the hiss was there before and I did not notice it with the engine cover on. I have read in the threads that an idle sensor can make a bit of noise due to its vacuum so maybe that’s what I can hear. Maybe the fuel rail.
Any suggestions would be greatly appreciated.
Scott.