DIY: Charcoal Canister Removal

The charcoal canister is essentially a device that traps fuel vapor that evaporates from the gas tank. Rather than simply releasing the vapors into the atmosphere, the vapor can be recycled and drawn back into the engine to be burned along with the fuel/air mixture. Of course, this is great when the car just rolled out of the factory, but after 22 years, the filter is complete clogged with nasties and gunk, resembling a bad dish of curry, rendering it completely useless. Even Mazda has stop stocking these parts for spares.

A common thing mx-5 owners therefore do is to remove it. Saves a bit of weight (a really small amount – 1.4kg) and generally clean up the engine bay.

Estimated Time: 15-30mins

Difficulty: 2/10

Tools require:

  • 10mm spanner/socket
  • pair of pliers
  • 2-3 cable ties (optional)
  • knife (optional)

Step 1: Locate the charcoal canister. It is located on the left side of the engine bay, between the radiator overflow tank and the inlet manifold.

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Step 2: Remove the top two hoses. On is a pull off and the other is a clip on.

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Step 3: Remove the hose connecting to the throttle body. I found these pull off hoses were quite tight. Using a pair of pliers help with leveraging the out.

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Step 4: Remove the attached connector.

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Step 5: Remove the bottom two hoses. This may be quite tight and difficult given the small amount of space. Once you have done this it should look like this.

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Step 6: Using the bottom hose from the canister and two cable ties or recycle the hose clips to connect the two pipes together.

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Step 7: Go to your boot and you should find a small hose nipple on one of the bolts on your rear lights. Take this and insert it into the throttle body pipe.

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Step 8. Take out the canister and all the relevant junk that was holding it.

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Step 9: Give the area a good clean and seal the connector with electric tape.

Voila. You’re done! Sell this shit on ebay and buy yourself a beer 🙂

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