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the vacuum advance line will be connected on a pipe at the closed position of the throttle butterfly. The pcv valve hose goes into the manifold under the carby
i think its located on the rear valve cover in the middle kind of hidden under some vacume hoses.there will be a large hose connected to the top of the pcv valve and the other end goes under the intake in the shape of an L and about 1/2" in size.pull the hose off the valve trying not to pull it off under the intake.
This is normally caused by your cars idle up. The idle up engages when you turn on the AC and that will add few RPM for your engine to prevent your engine from stalling. A replacement is needed to fix the problem. You may also check for the vacuum routing sticker on your hood. If you have a vacuum routing sticker on your hood, refer to that. The hose from the IAC valve routes to the Idle Up switch (as you know) the other hose from the idle up switch routes to the passenger end of the intake plenum, right on the end of it toward the firewall side. Don't confuse rubber heat shield on hose for hose size.
I have ran into this problem at my shop. There are 3 things that could be bad. Idle air control valve, pcv valve or the vacum hose for the pcv valve. Vicually inspect the pcv vale hoses. If you dont see a tear, spray carb cleaner around the hose, if engine idle changes there is a vacum leak in hose some where. If pcv valve and hose are ok than its your idle air control valve. You can attempt to remove part and clean it but this is only a temporary fix, Good luck.
The pvc valve will be located on the valve cover. Or better yet will be inserted into the valve cover. Follow the hoses coming from your air cleaner ( air filter) to the one that goes to your valve cover. Your pvc valve will be at the end of the hose. pvc valve can be tested by pulling it out of the valve cover while still attached to the hose. Start the engine. Place your finger over the pvc valve and pug it with your finger. If you feel vacume then it is working properly. If no vacume is present. Replace pvc valve
You may have to dig deeper for a vacuum leak. It's possibly the intake manifold gasket. Try spraying some starting fluid around the intake manifold. Also try disconnecting the brake booster and plugging that hose, the diaphram in the booster could be ruptured, causing a vacuum leak. Check the PCV valve and hose too.
Once you have the new PCV valve locate the old one on your engine. It will sit on the middle of one of your valve covers (most likely passenger side) and will have a line that connects to the top of the valve. Simply pull the old one out and put the new one in snapping that line on the new one. Should only take about a minute to do. Hope this helps, let me know if it does.
Take the pcv valve out of the hose and check it...Shake it,if it rattles it probably is good..But a new one would not hurt.Make sure any other ventilation hoses are routed right.If it only smokes while the hose is connected,then it is pulling oil from the valve cover into the intake and burning in the combustion chambers...Check your oil level as well...Good Luck!!!
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