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Some cars are equipped with a secondary air injection system that introduces extra air into the exhaust system from the air pump. This reduces emissions and increases fuel efficiency. If the air injection hose is leaking, due to cracks, breakdown of the materials, or gaps at the connections, fresh air flow is limited which causes carbon deposits in the combustion chamber, and increased unburned fuel. When your car emits a black smoke, it could be due to a bad air injection hose.
There are two different kinds of air pump hoses – PVC and rubber. Each has its own advantages and disadvantages. Some cars require a molded PVC hose, and some allow you the option of either one.
How to make sure you’re getting a good quality air injection hose:
Consider the warranty: PVC hoses tend to come with better warranties, but they are more vulnerable to heat damage which can result in leaks.
Think about how it will be used: Off-roading and rougher terrain driving can more easily dislodge a rubber hose than a PVC one.
Go for trusted names: Aftermarket parts can be high in quality, just be sure you research, and don’t automatically opt for the cheapest hose. Price tends to reflect durability in car parts.
YourMechanic supplies top-quality air injection hoses to our certified mobile technicians. We can also install an air injection hose that you've purchased. Click here to get a quote and more information on air injection hose replacement..
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