Intake manifold removal, whats the secret?

[K4fxd]

Reason I asked about miles is your pic's look like the IMRC flaps are full of oil and carbon.

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[Brian@BMVK]

I cant decide what to do to repair this. New manifold, used manifold, upgraded or supercharged...... wasn't expecting to mod so quick. Ran a compression test before pulling the manifold and the engine seems in decent shape.

2018 manifold upgrade + tune. Future proof with 47 lb injectors if you want to run E85. You can run it with locked out IMRCs but tuners have gotten the hang of making them work properly, so I'd get the pigtails to run them active.

 

[K4fxd]

I pulled the manifold on a 70,000 mile car a few days ago and the inside of the manifold was clean. Just a slight oil film.

If the pic's are correct you have a ton of blow by.

 

[Chomorro]

I pulled the manifold on a 70,000 mile car a few days ago and the inside of the manifold was clean. Just a slight oil film.

If the pic's are correct you have a ton of blow by.

Yeah definitely do. I need an air oil separator

 

[Chomorro]

2018 manifold upgrade + tune. Future proof with 47 lb injectors if you want to run E85. You can run it with locked out IMRCs but tuners have gotten the hang of making them work properly, so I'd get the pigtails to run them active.

I have to think carefully with my mods since I'm in CA with CARB restrictions. Havent researched yet how smog works with a tune etc.

 

[K4fxd]

Yeah definitely do. I need an air oil separator

No, you have some kind of mechanical issue with the engine. I'd do a cylinder leak down test.

 

[K4fxd]

Actually if it were my car I'd clean the manifold so that the IMRC valves close, put it back together and sell it.

If I really loved the car I would either rebuild the motor or buy a replacement from Ford or a re builder.

Used truck engines are reasonable if money is tight.

 

[Chomorro]

No, you have some kind of mechanical issue with the engine. I'd do a cylinder leak down test.

Compression test was good and looking on YouTube I see similar messiness on some vehicles so I dont know. I will get this fixed and do a leak down.

 

[Brian@BMVK]

Compression test was good and looking on YouTube I see similar messiness on some vehicles so I dont know. I will get this fixed and do a leak down.

Oil in the manifold is common without an oil separator. @Livernois Motorsports has CARB EO tuning FYI

 

[Chomorro]

Oil in the manifold is common without an oil separator. @Livernois Motorsports has CARB EO tuning FYI

Excellent I will give them a call tomorrow to see what my options are. Thank you!

 

[K4fxd]

Hopefully it is just the pics that make it look like the carbon is what is keeping the valves from closing.

Why won't the valve close?

 

[Chomorro]

Hopefully it is just the pics that make it look like the carbon is what is keeping the valves from closing.

Why won't the valve close?

Oh I see what you mean now. I think it's just the pics. Not sure why it wont close. If I close it by finger it closes fine with no resistance but if I use the actuator it will open (close the air space) and when released it stops partially before closing all the way.

 

[K4fxd]

Probably have a bad actuator.

Here is what a healthy 78,000 mile 15 coyote intake looks like. No oil separator used.

Dude went with a CJ manifold.

 

[Chomorro]

Probably have a bad actuator.

Here is what a healthy 78,000 mile 15 coyote intake looks like. No oil separator used.

Dude went with a CJ manifold.

I went back and examined it. All the build up you are seeing is under the flaps. When closed it looks like it's a very light film of oil.

 

[K4fxd]

Should be good to go then. If Livernois will tune for it the 18+ manifold is a cheap way to get some more RPM.

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