Now, start the engine!

Let the car run. It will take in the purge, burn some of it, and return some of it to the tank. As it flows through the system it will clean the system. You may see that the purge comes out darker than it goes in.

As it flows through, any carbon removed from the system will get trapped in the filters.

Stop the car just before the purge goes below the level of the supply line. Do not let your tank run dry or you'll have a hard time removing the air from your fuel system!

After running a purge, it's the perfect time to replace your fuel filters. There are two guides to help with this.

Primary Fuel Filter Replacement

Secondary Fuel Filter Replacement