That sounds pretty nasty... The secondary air system sounds pretty plugged up.
I've assembled a number of related questions that could be related to this symptom.
Check out the about a rough idle / codes 171 & 174 on a Windstar. This is about a TSB isssued by Ford and the Windstar Intake manifold "isolator bolts", AND a change in the valve cover design that causes lots of oil in the wrong places. Strikes me as something to be seriously looked into for your vehicle.
where is air flow relay on 2000 ford windstar
A murmur can be heard in a valve when there is turbulent blood flow across the valve due to narrowing (stenosis) or leaking (regurgitation) of the valve. This turbulent flow creates abnormal sounds that can be heard with a stethoscope during a physical examination.
Your bathtub faucet may be leaking when the shower is on due to a worn-out or damaged diverter valve. This valve controls the flow of water between the faucet and the showerhead, and if it is faulty, water can leak out of the faucet while the shower is running.
Your bath faucet may be leaking when the shower is on due to a faulty diverter valve. This valve controls the flow of water between the faucet and the showerhead, and if it is not working properly, water may leak from the faucet while the shower is running.
Your tub faucet may be leaking when the shower is turned on due to a faulty diverter valve. This valve directs water flow between the tub faucet and the showerhead, and if it is not working properly, water may leak out of the faucet when the shower is in use.
this model does not have a heater control valve, it has a specail thermostat that controls flow.
If your water shut off valve is leaking when closed, you should first try tightening the valve to see if that stops the leak. If that doesn't work, you may need to replace the valve to prevent further leakage and ensure proper water flow control. It's important to address this issue promptly to avoid water damage and wastage.
If the valve cover is leaking it may let oil flow down the head and make the Head gasket appear to be leaking. Clean the engine and then use oil dye or watch for leaks. If there is a coolant leak it is not the valve cover.
Your toilet may be leaking into the bowl due to a faulty flapper valve, a damaged fill valve, or a worn-out wax ring. These issues can cause water to continuously flow into the bowl, leading to a leak. It is important to address the problem promptly to prevent water wastage and potential damage.
Carbon build up. Sticky or stuck EGR valve. Vacuum supply line damaged/leaking. Faulty EGR valve. Faulty EGR Position sensor/wiring.
Water may be leaking from your toilet tank due to a faulty flapper valve, a damaged fill valve, or a loose connection. These issues can cause water to continuously flow into the bowl, leading to leakage. It is important to identify and fix the problem to prevent water wastage and potential damage.
Means flow when purge not commanded. Bad or stuck purge valve Broken damaged or leaking vapor control system Bad purge control solenoid.