Blown oil pan and both valve cover gaskets blown

[LVMarauder]

You might ask how? I took my car down to the dealer because I thought it had an oil pan gasket leak. The service manager calls me back and says I have an oil pan, both valve covers and some other gasket blown and leaking oil. He says it because I installed a JLT intake and the PVC breather was actually a vacuum and very important in relieving pressure from the crackcase so the oil had no choice but to blow the gaskets out? Anyone else here/ now about this and not post it? thanks.

[Smokie]

You might ask how? I took my car down to the dealer because I thought it had an oil pan gasket leak. The service manager calls me back and says I have an oil pan, both valve covers and some other gasket blown and leaking oil. He says it because I installed a JLT intake and the PVC breather was actually a vacuum and very important in relieving pressure from the crackcase so the oil had no choice but to blow the gaskets out? Anyone else here/ now about this and not post it? thanks.

The JLT intake tube doesn't change the vacuum your engine creates in the intake tube, if there was a crankcase ventilation problem, it would be caused by the PCV valve. Other have the JLT with no such problems, it is just another dealer blaming aftermarket parts for whatever goes wrong with car.

[torinodan]

The JLT intake tube doesn't change the vacuum your engine creates in the intake tube, if there was a crankcase ventilation problem, it would be caused by the PCV valve. Other have the JLT with no such problems, it is just another dealer blaming aftermarket parts for whatever goes wrong with car.

I'm calling the same Did they show you the "BLOWN OUT" gaskets? I thought these were the reuseable ones that had a metal core in them that makes them reusable? Still sounds like

[Rider90]

Atleast they are only gaskets.

[grampaws]

The PCV system is required for emissions it vent crankcase fumes into the

intake to burn the fumes..if this system is plugged.pressures can build up
and blow gaskets..All engines are vented in some way to relieve this pressure.
If you have plugged or blocked of hese vents you would have created your
Leak problem..If you vented it properly to the intake from the rocker cover
and the PCV valve is still in place then it is the dealers problem and it should still
be warrantied...if the JLT intake is connected properly the vent hose should
be connected(all new intakes include the vent hose)..does this help??
unless you have purposely disabled and plugged these vents.the dealer is
full of it!!

[CRUZTAKER]

The JLT intake tube doesn't change the vacuum your engine creates in the intake tube,

LV...clear something up for us first...

JLT did offer another part with their kit. A replacement pcv breather cap/filter. It was used if one deleted the hose from the intake tube to crankcase.

Did you do this? If so, they have a leg to stand on. There was a long discussion here about those old school shiney breather caps we once all used on the older carburated motors. The consensus concluded that we should likely not delete that hose from our intake tube to valve cover with one of these.

[torinodan]

LV...clear something up for us first...

JLT did offer another part with their kit. A replacement pcv breather cap/filter. It was used if one deleted the hose from the intake tube to crankcase.

Did you do this? If so, they have a leg to stand on. There was a long discussion here about those old school shiney breather caps we once all used on the older carburated motors. The consensus concluded that we should likely not delete that hose from our intake tube to valve cover with one of these.

Now that is a real good question you got there?

[FordNut]

Did the pcv valve get removed? It is on the passenger side and connects between the intake manifold and the valve cover. If that's connected it doesn't matter (as far as crankcase pressure) where the other valve cover is connected (intake tube, breather, etc.). However, if the pcv valve is still connected and a breather is installed on the other side it can cause problems in that the engine is drawing in unmetered air (didn't go thru the MAF sensor).

BUT, since the intake tube is aftermarket, the dealer can blame it. Maybe it's BS but that's the way it is.

[Bradley G]

Get a second opinon, have the shop , show you what is leaking.
Have them write it down for you and report back.

[grampaws]

as long as there is a vent the crankcase pressures should not build up
enough to damage the gaskets..this vent is for air to enter the block..
the PCV valve side is vaccum to draw of the fumes and is not altered
by most CAI systems..the vent cap should relieve pressure if the PCV gets
plugged(unlikely and should still be warrantied)..As long as the install
followed the instructions its installation will not cause your problem..
wash engine snug up the cover bolts and drive for a couple of days
recheck and it will probably be loose bolts..might not even have to replace
any gaskets..Are they leaking or blown out??

LV...clear something up for us first...

JLT did offer another part with their kit. A replacement pcv breather cap/filter. It was used if one deleted the hose from the intake tube to crankcase.

Did you do this? If so, they have a leg to stand on. There was a long discussion here about those old school shiney breather caps we once all used on the older carburated motors. The consensus concluded that we should likely not delete that hose from our intake tube to valve cover with one of these.

[DEFYANT]

I learned the hard way.

I bought the JLT with the little breather A/F thing. My car ran like ***** because the unmetered air situation mentioned above. I promptly modded the JLT to accept the PCV hose.

If you modified the crank case vent system (..to keep the oil out of the intake?) you may be stuck.

[FordNut]

If our guessing about the pcv system being bypassed is correct, I would suggest getting the car back and re-connecting the pcv system properly to see if the leakage stops. Putting vacuum back on the crankcase may solve the leakage problem. Clean up the engine really well just to see. If the leakage doesn't stop, put all the stock stuff back on and take it to a different dealer (assuming the car is still under warranty AND the current dealer doesn't void the warranty for you).

[SergntMac]

Wow...The coincidence here is spooky! I'm working on problem right now!

Everyone who went to Gainsville last Saturday, got a chance to see what a screwed up PCV system looks like on a race track. Everyone there, including track officials, thought I blew my engine in the traps. Clouds of smoke, and a tiny tiny squirt of oil out of the valve cover. Not enough to call a leak, but enough to light up when it hits hot pipes. Under normal crankcase pressure, nothing to look at, nothing to trace, but at 6200 RPM/120MPH, a waterfall...

It's fixed now (I think), but the cause is completely my fault. About a month ago, Zack and I changed over from a blow through MAF, to a suck through. This left the driver's side PCV hose with no place to go, and taking the advice of a professional Ford wrench and seasoned race car builder, I attached a simple PCV valve to a push in breather (yes, like the old days) and let her rip.

Over the 1100 mile trip to FL., I needed to add one quart of oil. I should have taken a hint here, but I didn't. Just before going to the track at Gainsville, I changed the oil and filter, and didn't clean the frame as good as I thought.

I wanted my first pass down the track to be a "street trim" pass, street tires, pump gas and tune. I knew I would go nowhere fast in ETs, but I wanted this index anyway. First pass, 14.10/110 MPH, this MM comes on very strong with proper traction. At the timing shack, I got pulled down by officials. After some discussion, I returned to my pit and some of y'all came over and wondered if I blew something. All I could do is shrug, everything seemed fine.

More discussion with officials and I went off to clean my engine bay, the residue of my oil change indicated I was blowing oil on the track, in "their not so humble opinion." That done, back to the water box, still in street trim.

I wanted to see what was happening, and I asked Claude (Carfixer) to pilot. He did several burnouts for the officials, no leaks, no smoke. Claude went on to make a pass, and we all saw it. Tons of smoke coming blowing out of the car when Claude got up off the throttle in the traps. Serious smoke, blown engine looking smoke.

Found a drop of oil on the frame which suggests a pin hole leak that could become a water hose leak under crankcase pressure. Numbers wiped, nothing I could do about it until I get home. I lost a quart of oil somewhere in this, and used another quart on the way home. The following Tuesday, Zack and I attacked this with another plan.

The breather wasn't breathing at all, I used a cheap aftermarket PCV valve, not the suggested Ford FV-111 for supercharged engines. My second error was relying on the crankcase pressure to vent on it's own. It does not, not very well anyway. So, we routed a 3/8" hose from the driver's side vent, around the back of the engine and into the upper intake manifold. Then we added a vent to the intake elbow before the supercharger, and routed the passenger PCV here, again with 3/8" hose. Now, instead of just letting the crankcase vent, I'm sucking gasses out.

We also completed a leak-down test to see if there was any damage, or other concerns causing, or, resulting in this "blue smoke at shut down" problem. Everything seems okay, all I can do is monitor from here.

I had a JLT intake on my MM for a while, I wasn't pleased with it. But, I recall that there are several ways to install it, depending on your particular MM. I suppose LV could have made decisions similar to my choices, and that could blow gaskets if left unattended. OTOH, I'm not full of trust for dealership wrenches, the advice I took came from one, and look what it got me.

[Warpath]

We got into this last time. So, I'll only state that if you are supercharged and keep the stock PCV system, check it occasionally for oil build up. There are some Mustang owners who have experienced the supercharger sucking oil out through the PCV hoses (or they have more blow by). Perhaps MM oil baffling is better.

[MENINBLK]

Would the Steeda Oil Separater kit help this problem out ?