Eliminate Vacuum Leaks in Your Car’s Engine: Fixing the Vacuum Hose
Your car is equipped with a computer that tells you what exactly is going on with the engine and other components inside your vehicle. This is only made possible through the use of vacuum; therefore, having vacuum leaks can make your computer work in a fuel-rich mode in an attempt to prevent inappropriate air-to-fuel ratio. It can be dangerous to your car's engine in the long term. That is why when you encounter problems with your vacuum hose, such as punctured or torn, you need to make sure that you repair the hose immediately.
Difficulty level: Easy
Duration: 30 minutes
Tools to be used:
- Flat-head screwdriver
- Phillips screwdriver
- Old rags
- Carburetor cleaner
- Safety glasses
- Replacement vacuum hose
Step 1: If you have just used your car, let the engine cool down first before touching anything under the hood. The components can be very hot right after using your vehicle. Once the engine has cooled down, wear your safety gloves and glasses. This can help in preventing minor injuries during the replacement procedure.
Step 2: Examine the condition of the vacuum hose first. Pop up the hood and look for the vacuum line. Inspect the hose for any sign of damage such as cracks or dilapidation, as these can cause the engine to stall, idle poorly, and reduce gas mileage.
Step 3: Check the flexibility of the vacuum lines as well. Over time, the hose can harden due to the extreme temperatures under the hood, resulting in vacuum leaks caused by the busted hose.
Note: Engage your car's parking brake before you start the engine.
Step 4: Turn the key to the ON position, then turn the engine on. Grab the carburettor cleaner and spray an ample amount on each of the vacuum hoses. While the engine is running, listen carefully for any changes in the engine's idle sound.
Step 5: Once you notice that there's a change in the idle noise of the engine, or if you hear a hissing sound, find out and trace which vacuum hose is damaged. Then, turn the engine off.
Step 6: Remove the vacuum hose from its plastic or metal connectors using a pair of pliers to carefully pull them out. You wouldn't want to damage the connectors, so better exert caution as you perform this step.
Step 7: Clean the vacuum hose connectors using an old rag to remove any contaminant such as dust, dirt, and oil.
Step 8: Slide the new vacuum hose onto the plastic or metal connectors. Be sure you apply a controlled amount of pressure while inserting the new hoses, so that you don't damage the connectors.
Step 9: Turn on the engine. To verify that the replacement has been successful, spray carburetor cleaner on the new vacuum hoses and listen for changes in the idling noise.
Step 10: If you're not sure that the idling sound has returned to normal, refer to your owners manual for the specs of a healthy car vacuum system.