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Charcoal Canister Replacing
 
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Pelican Technical Article:

Charcoal Canister Replacing

Nick Czerula

Time:

2 hours2 hrs

Tab:

$400

Talent:

***

Tools:

Phillips screwdriver, 6mm Allen, floor jack, jack stands, wheel chocks, safety glasses, torque wrench

Applicable Models:

R56 MINI Cooper Hatchback (2007-11)
R56 MINI Cooper S Hatchback (2007-11)

Parts Required:

Charcoal canister, DMTL pump

Hot Tip:

Be careful when working with evaporator system, do not damage any hoses or connections

Performance Gain:

Repair evaporator system faults

Complementary Modification:

Replace evaporator hoses

With increased federal emissions standards, MINI has been required to decrease both tailpipe emissions and the evaporative emissions. Evaporative emissions consist of volatile organic compounds (VOC), such as hydrocarbons from fuel and engine oil. Both of these emissions vaporize and can escape from the vehicle into the atmosphere if not recovered.

The charcoal canister is an emission control device that consists of a sealed plastic canister of activated charcoal with hoses and lines at the side. It's used as a temporary storage device for fuel vapor or HC (hydrocarbon) from the fuel tank. This prevents excess fuel vapors from exiting the fuel tank and entering the atmosphere.

When the engine is off, fuel vapor from the fuel tank passes through a vent line into the canister where it is absorbed by the charcoal. When the engine is running, the fuel vapors are routed to the engine via an electronic solenoid and drawn in by intake manifold vacuum. This process is controlled by the DME using a programmed duty cycle in order to maintain proper fuel mixture.

The charcoal canister and DMTL pump are located on the right side of the fuel tank. The charcoal canister is responsible for storing hydrocarbon vapors from the fuel tank that is eventually sent to the engine via the purge solenoid. The DMTL pump is mounted to the charcoal canister and is used to pressurize the evaporator system to check it for leaks. The DMTL pump can fail electrically. A fault code will be stored and the MIL (malfunction indicator lamp) will be illuminated. If you have a fault code for the DMTL pump current high, replace the DMTL pump with a new one.

Remember that your car may have been serviced before and had parts replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches.

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability.

Our vehicle may vary slightly from yours as models do change and evolve, as they grow older. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

Jack the rear of your vehicle and support it using jack stands. See out tech article on jacking your vehicle. Always wear your safety glasses whenever you're working under your car.

The charcoal canister is mounted to the right side of the fuel tank (red arrow).
Figure 1

The charcoal canister is mounted to the right side of the fuel tank (red arrow).

Working at the rear of the charcoal canister, disconnect the DMTL pump electrical connector by pressing the release tab (red arrow) and pulling it straight off.
Figure 2

Working at the rear of the charcoal canister, disconnect the DMTL pump electrical connector by pressing the release tab (red arrow) and pulling it straight off.

Working at the front of the charcoal canister, disconnect the vent solenoid electrical connector by pressing the release tab (red arrow) and pulling it straight off.
Figure 3

Working at the front of the charcoal canister, disconnect the vent solenoid electrical connector by pressing the release tab (red arrow) and pulling it straight off.

Working at the side of the DMTL pump, disconnect the large hose.
Figure 4

Working at the side of the DMTL pump, disconnect the large hose. Squeeze the hose release collar (red arrows) and pull the hose straight off the charcoal canister.

Working at the rear of the charcoal canister, disconnect the two hoses.
Figure 5

Working at the rear of the charcoal canister, disconnect the two hoses. Squeeze the hose release collar (red arrows) and pull the hose straight off the charcoal canister.

Next up, remove the two 6mm Allen charcoal canister fasteners (red arrows).
Figure 6

Next up, remove the two 6mm Allen charcoal canister fasteners (red arrows).

Working in front of the charcoal canister at the plastic shield, remove the 10mm plastic nut (red arrow).
Figure 7

Working in front of the charcoal canister at the plastic shield, remove the 10mm plastic nut (red arrow). This will allow the plastic shield to be pulled to the side when removing the canister.

Reach up between the fuel tank (red arrows) and the charcoal canister.
Figure 8

Reach up between the fuel tank (red arrows) and the charcoal canister. You will have to detach the canister from two mounts. The canister has two rubber grommets that are secured to the fuel tank via rods. See the following photo for detailed photos.

The green arrows point to the plastic rods the canister (red arrows) mounts to.
Figure 9

The green arrows point to the plastic rods the canister (red arrows) mounts to. Push the canister toward the right side of the vehicle to detach it. When removing these canister mounts, support the canister while you remove the last one. The canister can drop out. If it hits the ground it could break. Slowly lower and guide the charcoal canister out of the vehicle.

Place the charcoal canister on a work bench or solid surface.
Figure 10

Place the charcoal canister on a work bench or solid surface. Then remove the three Phillips head screws (red arrows) for the DMTL pump.

Pull the DMTL pump straight out of the charcoal canister to remove it.
Figure 11

Pull the DMTL pump straight out of the charcoal canister to remove it. The new DMTL pump should come with a seal (red arrow). Double check that you are getting one with the new part and be sure to replace it when installing the new part. Before reassembling the charcoal canister, inspect the canister lines and hoses for cracks or damage. You don't want to reinstall a defective part. Your check engine light will be on soon after if you do. Install the new DMTL pump to the charcoal canister. When installing the canister, I find it helpful to apply dish soap to the rubber grommets to get them to slide on easier.

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Comments and Suggestions:
Mikes Mini Mania Comments: Part #: 16-13-7-193-479-M14

Is this the part number for the DMTL in this article ?

For a 2009 R56

Can it be replaced independently of the canister?
November 12, 2016
  Followup from the Pelican Staff: Yes it can. Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
bubblun Comments: Great post - did the DTML pump replacement job on a 2011 Mini Countryman S ALL4 today. There are a few changes - the DMTL pump is held to the canister with three T-20 torx screws instead of Phillips head in your example. There is an access panel that must be removed on the drivers side to see the DMTL pump/charcoal canister. The panel has both 2 10mm metal and 2 10mm plastic threads and 2 8mm metal threads on another piece of shielding that must be removed. The benefit of the new design is that it is possible to remove the DTML pump without removing the charcoal canister assembly from the car. About a 1 hour job on this model.
May 14, 2016
  Followup from the Pelican Staff: Thanks for the additional info and feedback. We appreciate it.
- Nick at Pelican Parts
 

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