Look for any tube connected to the valve cover(s), then follow the hose to the inline checkvalve. That's the actual PCV on these cars. They aren't like other cars that have a PCV on the end.gthomp0805 said:I have a 1994 900se 2.5 non turbo and I am having a hard time finding the PCV valve to check it. If there is anyone who has had this issue and can help, I would greatly appreciate it.
Should have looked around this forum a little harder...gthomp0805 said:All stand by. I am going to look again over the weekend and send pics. Maybe that will make all of this a bit easier since no one has pics of a V6 non-turbo
This car does not have a PCV check valve. A little Google searching lead me to Saturnfans.com where I was able to get a picture/diagram of the crank case vent after joining the forum. This unit sits at the end (transmission side) of the rear head on top of the crank case. There are two outlets on this unit, one goes straight up to the intake, the other routes to the front of the intake. You can access it with a little patience and remove the vacuum lines to ensure that the ports are clear. I had to use my tip cleaners from my Oxy/Acetylene torch to clear the rear nipple. Now hopefully my leaking valve covers will be tamed.I don't think there is a PCV valve on the V6 N/A; the crank case vents through an oil separator at the end of head #1 a small hose goes upto the underside of the inlet manifold and a fat hose goes to somewhere near the throttle body; there are no check valves in the circuit.
The fpr has a tube connected to it that is supposed to be at ambient atmospheric pressure in the v6. So it was connected to the proper nipple. It should not have vacuum. So the change you made would have some effect on fuel pressure in the rail, and consequently on the quantity of fuel delivered to the cylinders.Maybe this will shed some light. From what I have seen under the hood, there are several hoses to and from the throttle body. I have had the intake manifold off at least a dozen times (thank god its not that tough) and have not had a need or seen any hoses underneath to disconnect. There is a large hose from the IAC valve to the trottle body. There are two smaller hoses coming off the back and underneath of the throttle body. One goes to the fuel pressure regulator and one to what appears to be an electronic check valve that is mounted on the inside wheel fender and then that continues on into the fire wall which I was told was the charcoal canister/breather. There is also a third port off of the throttle body underneath that is capped. What brought all this to my attention was when I removed the hose from the FPR there was no vacuum so that's when I decided to see if the check valve was clogged. I followed the other end of the hose from the FPR to the throttle body and discovered it was hooked up to the port with no vacuum, but the other 2 ports are producing vacuum. So I capped the port with no vacuum and connected the FPR to one that was capped and producing but it made very little difference in the engine performance. Thats where I stand now.