spclforcesman@yahoo.

Not sure who all knows this but I just found out about a month ago. The 1999 and 2000 v6 mustang drivers side valve cover is messed up. It allows oil to be drawn from the heads to your upper intake. Which can cause a knocking noise. I have a 2000, I took off my TB and looked inside my upper intake, and it was all black, from the oil, that causeexcessive carbon deposits. It is a quick and cheap fix. If you can change your air filter you can do this.

Parts you need. (All can be found at a local auto parts store)

4hose clamps
3/8 inline fuel filter
3/8 fuel line (about 6 inches)

Tools needed.

Flat head screw driver
something to cut the intake vacuum (i used sheet metal shears)


I don't have any pics, but I will do my best to explain everything, its not hard at all.

Prior to starting:Make sure your car isn't running. Raise your hood and prop it up. The pcv valve is on the drivers side of the car. If your manual tells you otherwise it is wrong, mine did. The pcv valve and intake vacuum hose is located right next to your engine oil cap. Now that you know what your working on and where it is at you can begin.

First:Cut your fuel line in half, making two pieces about 3 inches long.

Second:Connect one piece of your fuel line to the bottom of your fuel filter and fasten it down with a hose clamp

Third: Go up about 3 inches onyour intakevacuum and cut it, slidethe bottom end of the fuel filter with the fuel line connected to it,onto the intakevacuum, slide it on about 1/2 inch to 1inch, then fasten it down with a hose clamp

Fourth:Line up the fuel filter with the intakevacuum hose and cutthe intakevacuum hose about 1/2 past the filter.Connect the other fuel line to the top end of the fuel filter andfasten with a hose clamp. Now connect theother end of the fuel line to the intakevacuum and fasten with a hose clamp.

And your done, thats it. Now all you have to do is check it the next day and see if it is working. You will know thatit is working cause you will see oil in you filter. The oil should dripback into your heads. You may want to check it every month or so and see if you need a new filter or not.

If you don't want to do that you canbuy a new valve cover that doesn't have the problem,Part Number 3F2Z-6582-BA.

Any questions feel free to ask.

raz54

Most people install an oil separator in line to catch the oil, a filter will soak up oil and let it pass through.

spclforcesman@yahoo.

An oil seperater can cost $60 to $70 dollars, mine seems to work fine, the oil drips off the filter and i can see it draining back into the heads, but I did that is another way you can do it.

cobra232

the baffles for the PCV allow too much oil into the engine. add a breather on both covers or an oil catch bulb or just use better valve covers.

if you don't then i reccomend using seafoam on a 20,000 mile interval through the PCV port to remove oil deposits from the intake and intake valves

raz54

I paid a total of $14.00 for my separator and barbbed fittings from Harbor Freight. You can also pick one up from Sears or any paint shop and save a bunch of money and make your own. I would not use breathers though. You need that crank case vacume plus breathers will leak oil on your engine.

amrcnidyot

one of those valve covers, (3F2Z-6582-BA) is only 50 from ford, if your gonna mess w/ it why not just replace the cover.

mcccop_04

only 50, well then i think i'll do that soon then, thanks amrcnidyot!

raz54

I just noticed the OP only listed 99-00 models but mine is an 04 and it has the same problem. I'm guessing the valve cover amrcnidyot listed is most likely the same as mine so that may not totally cure the problem. Installing an oil separator is cheap insurance (IMHO).

amrcnidyot

well thats just the part # that the guy above posted. i dont know if that will fix it like he said but it is only 50.
CLICK ME

raz54

You would think Ford would have fixed this by now if it started with the 99's. I don't see anything positive about having oil being burned, only negetive.