How to Repair a Vacuum Leak in Your Car

A vacuum leak in your vehicle could cause your car to ride differently than normal. If you think that there is a break in your vacuum line creating a leak, then it is best to change the vacuum line completely. If you are inexperienced with vehicles and vacuum lines, then this may be challenging task that needs you to find a good mechanic to help. However, if you know your way around automobiles then replacing the vacuum line may take no time at all.

1 – Locate the Leak

To know out for sure if there is a leak you must first visually check the line. When inspecting the line look for holes or tiny breaks in the line. While the hose is made of tough rubber it doesn’t take much to break the line enough to create a leak. If the vacuum line is relatively new then you can inspect to see if the line has rubbed against other lines creating a break. If the line is old then you need to inspect around the fitting and engine components for a break or again a rubbed portion of the line. Often tiny holes can go undetected and you just assume that the line is fine. Do not make that mistake, change the line anyway.

2 – Buy New Lines

Once you find the leak or decide to change the lines anyway you have to purchase a new vacuum line. If you have experience with this type of issue then you can simply visit your local auto parts store to pick up a new line. If you are not very sure of what you should be buying then remove the line from the vehicle and take it with you to the auto parts store and have a professional match the lines for you.

3 – Change the Line

When changing the line you have 2 options:

Option 1: Change a Section of the Line

In some situations the entire line does not have to be changed. Instead you may elect to simply repair or change the section of the line that is broken or rubbed. To do this take out the broken section and change it with a new section of vacuum line. Cut the new vacuum line to the correct size using scissors or a knife. Then simply change the old with the new. Use your line fitting to secure the new line in position.

Option 2: Change the Entire Line

If you are not sure about where the problem lies on the vacuum line, then you should change  the entire vacuum line. In this case, you will not cut out any sections; you will remove the old line entirely and begin installing the new one. This option is a little more time consuming as you must change the line one section at a time. Use your line fittings to secure the new vacuum line in position.

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