Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

Engines with direct injection can suffer from carbon buildup on the intake valves. This buildup can be caused by oil passing through the PCV system into the intake, getting baked onto the intake valves over time.

PCV stands for "Positive Crankcase Ventilation", and it keeps pressure from building up in the engine's crank case and damaging the engine. This pressure is often called by "blowby", which is when fuel and gasses from the combustion chamber blow past the piston rings and into the crank case. Without a place for that extra pressure to go, it would build up and blow out seals or cause other damage. Instead of venting those harmful gasses into the atmosphere, modern cars will recirculate those gasses into the air intake system, burning it off.

Often, oil will get sucked up into the PCV system. An oil catch can, also called an oil separator, will "catch" the oil and pass the gasses on to the intake. You just empty the catch can periodically and dispose of the contents safely.

This article is for a kit that is specifically designed to fit 2014 and 2015 Fiesta STs. These instructions could still be helpful for other kits.

Time: 30 minutes

Difficulty: Not Bad

Required Tools

Required Parts

Mishimoto Oil Catch Can Kit

Step by Step Instructions

1

Remove the engine cover by pulling up at the edges.

Image 6016 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

2

Locate the stock PCV line on the top-left side of the engine. Note the locations of the two quick disconnect fittings at either end (A and B below).

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3

Use the slotted screwdriver to pry out the plastic tab holding the stock PCV line to the engine.

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4

Disconnect both ends of the tube by pulling back on the collar.

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5

Remove the stock PCV line.

6

Using the 18mm deep socket, 6" extension, and socket wrench, remove the two nuts from the upper engine mount. You might need to (carefully) use the breaker bar.

Image 6064 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

7

If the stud comes out with the nut, don't worry. When I did it, one came out, the other didn't. You'll just screw it back in later.

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Preparing the Catch Can

8

Using the 11/16" wrench, screw the two hose fittings into the catch can.

Image 6034 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

9

Tighten them until they feel secure. The threads are tapered, so they may not screw all the way in.

Image 6037 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

10

Install the bracket onto the catch can using the 2.5mm allen key screws and washers. Note the orientation of the bracket in the photo below.

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Installing the Catch Can

11

Attach the bracket to the engine mount using the nuts you removed earler. Torque to 60 ft-lbs (81 N-m)

Image 6040 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

12

With the hose that has a 90 degree bend at the end, put a hose clamp over it and slip the hose over the IN fitting on the catch can. Leave the hose clamp loose for now.

Image 6043 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

13

Insert the other end with the quick disconnect into the rear PCV port. It will click into place if you did it correctly.

Image 6046 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

14

With the remaining hose, put a hose clamp over it and slip the hose over the OUT fitting on the catch can. Leave the hose clamp loose for now.

Image 6049 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

15

Insert the other end with the quick disconnect into the front PCV port. It will click into place if you did it correctly.

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16

Tighten both hose clamps at the catch can side. Do not over tighten. Also, make sure to orient them for easy access.

17

Double check all hose clamps, screws, nuts, and quick disconnects are properly secured and torqued. Then, go for a drive and make sure nothing pops off.

Image 6055 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

18

The manufacturer recommends you empty the catch can every 1,000 miles until you get a baseline for how much oil is collected. You might be able to empty it at every oil change if you are not collecting much.

19

Reinstall the engine cover if desired.

Image 6058 from Install the Mishimoto Oil Catch Can Kit on a 2014 Ford Fiesta ST

Conclusion

Congratulations! You now have a little piece of mind, and hopefully you can avoid an intake cleaning in the future.

Also, please note that the video linked in the Source section below contains a different type of quick disconnect from the one shown in my pictures. Maybe your car has the one in the video, but they're both easy to operate, and produce a click when they lock into place.

Misc Sizes and Specs

Upper Engine Mount Nut Torque 60 ft-lbs or 81 N-m

Source

2014+ Ford Fiesta ST Baffled Oil Catch Can, PCV Side Installation Guide By Mishimoto