2005 Saturn Ion Owner's Manual - Page 243

How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/filter remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains caked with dirt, a new filter is required. To inspect or replace the engine air cleaner/filter, do the following: 1. Loosen the hose clamp that is on the inlet duct on the cover and pull off the hose. 2. For vehicles equipped with the 2.2L L4 engine, release the two clips and turn the cover upward to unhook the hinges. For vehicles equipped with the 2.0L L4 supercharged engine, remove the three screws on the cover. 3. Pull the air cleaner/filter box cover out and remove the air filter element from the air filter box. If the element is dirty, you should replace it. If the element is only dusty, it may be cleaned by blowing compressed air through it from the clean side. Make sure you are away from your engine compartment when cleaning the air filter with compressed air. 4. Wipe all dust from inside the housing and inspect the air cleaner and air inlet tube for cracks, cuts and deterioration. The air inlet tube must be replaced if it is damaged. 5. Install the air filter element, hose, hose clamp and cover. 6. For vehicles equipped with the 2.2L L4 engine, latch the two clips. For vehicles equipped with the 2.0L L4 supercharged engine, replace the three screws. {CAUTION: Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. If it is not there and the engine backfires, you could be burned. Do not drive with it off, and be careful working on the engine with the air cleaner/filter off. Notice: If the air cleaner/filter is off, a backfire can cause a damaging engine fire. And, dirt can easily get into your engine, which will damage it. Always have the air cleaner/filter in place when you are driving. 5-23