Yes miker, that's exactly it. There are photos of what the intake valves look like in as little as 20k miles. For 2018 Ford has double injection direct and port which probably mean we really need to filter the fuel really good. With that said I'm still installing a factory authorized "off road" separator from Ford Performance Because contaminants will still get into the intake before the port nozzles. I called a Ford rep/tech concerning them and said its a great idea even for the 2018's. Plugs in with stock appearing hoses with Ford part #'s and mounts on the front of the right valve cover. Lines remove in 10 seconds to put on the original line for state inspection. All these parts from Ford are for "racing Mustangs" that just happen to bolt on pickups...imagine that.

Anyway I'm just trying to keep the inside of my engines as clean as I can including my old Y's . .

56 Vic, B'Ville 200 MPH Club Member, So Cal.

Ok, I get it now. I've never had a problem, but since the closed PCV system on my F code is connected before the supercharger it would lower oil contamination going thru it. Same on my 'bird when I had the Paxton on it. Both those were pretty low mileage engines with practically no oil consumption.

Having never owned a direct injection engine, I still don't understand the valve problem. Is it passing the oil vapor/residue thru the dry intake, and accumulating without the fuel to wash it thru?

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

57Ranchero has it. You can Google or better yet go to YouTube and see what they are. Yes by law they are are illegal since you are tampering with an emission system if In fact your vehicle needs state inspection. I have a YouTube video on the installation of them on our 2 Honda Civics. ( I can return them to stock within 5 minutes each since they are state inspected every 2 yrs)

They are extremely important on direct injected supercharged engines. I sold my 2013 F150 Ecoboost with 40k miles because I didn't want to pull the heads in the future. In a port injection car your intake will get gummed up and a throttle body or carb car doesn't seem to have the problem other than water(condensation) and other contaminants getting burned in your engine during combustion from the blowby every engine has.

I'm just asking you guys with PCV systems IF you would put one on after reading about them. I can guarantee you I would just because it's better for your combustion, air vs contaminates even the tiniest amount. You can see on YouTube what some of these guys are getting in the catch can in just a few thousand miles. Keeping my road draft tube looks better all the time but there is a smell I live with too.


56 Vic, B'Ville 200 MPH Club Member, So Cal.

The only Ford engines that I've heard of that seem to have a cylinder washing issue were the early two valve 4.6's found in the Lincoln Town cars and the Crown Vic's. I've had and have two F150's with well over 100,000 that use no oil. The First was wrecked at 186 thousand and was still using less than a quart over 3000 miles. The  one i have now is around 130,000 and uses less than a quart of semi synthetic over a 5000 mile period, some of which was pulling the 57 on a trailer through the Pennsylvania mountains. Don't see much problem from them.
      Mike, unless you have a bad injector You don't have a problem with a throttle body setup.


Frank/Rebop

Bristol, In ( by Elkhart) 

I read about these catch cans somewhere in the past and t looked like a neat system. It was installed between the PCV and the intake manifold or carb port. I have PCV system on my Y block, 223 I6, and 289 in mustang. I've never had any indication of oil being sucked into the intake so I didn't look into it any further. I had a friend with an FE that had a problem with oil being sucked in and tried one and it worked great for him.

I've no idea what the catch can setup is either?.. However, I did read something some time ago about some direct injection engines (one was a Ford) having problems with cylinder wall wash down issues, damaging the piston rings or cylinder walls. As for removing PCV systems from your late model car, I suspect that is illegal in durisdictions that have emission regulations... 


Paul

Ok, you've got my attention here. Mainly because I don't know what you're talking about. I've seen oil catch cans, or separators, I know some race motors use crankcase systems routed to the exhaust side, but I really don't have clue about using one on the PCV system of a street motor. Please explain that to me, I'm just always curious.

Second, a little more about the intake valve side with the direct injection. My 'bird has EFI, but it's a throttle body, so a wet manifold. My other cars have port injection, so the intake valve does see the fuel. I've only dealt with direct injection on diesels, and that was limited to a pair of 370VT8 Cummin's in a marine application.

Thanks

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

For the most part none of us need by law to have a PCV device on our engines but if you do, and many of us seem to, would you consider an oil separator (catch can) system? I've just installed one on each of my daily drivers (one a 2015, the other a 2003) and sold a 2013 F-150 Eco Boost because I felt it had too many miles to add one now as the damage was already done.
If your not familiar, direct injection vehicles of any kind especially supercharged ones have known intake valve problems and Ford has recognized this with their Mustangs by having a Ford Performance part for "off-road" use only. I've ordered a 2018 F-150 and it will get one within the first week.
Any thoughts....

56 Vic, B'Ville 200 MPH Club Member, So Cal.