Air Injection System Line Replacement Cost Estimate

Checking a line for leakage or damage is a simple task, Removing and flexing rubberized lines will allow the technician to observe the material for cracks, deterioration and brittleness. Metallic and plastic lines can be examined for failure as well, and signs of exhaust leaks at the manifold may indicate the seal or line has failed.

Replacing lines is straight-forward and simple, but there may be some issues gaining access or working in the tight spaces these components are mounted in. These lines may disconnect by pressure, clamps, clips, or threaded connections, but they will all need to be disconnected from both ends before installing the new line. It should be mentioned that some lines will need to be disassembled to allow transfer of inline components from the old line to the new.

Since the air injection system uses rubber press-fit hoses and other components subject to deterioration, any time the system is serviced it is advised to perform a complete inspection of the secondary air system. This includes inspecting for exhaust leaks where the air injection system connects to the exhaust manifold or exhaust pipe.

Portions of this system become extremely hot to the touch as they are directly connected the the exhaust system. Any time this system is service, ensure that the engine has had adequate time to cool. Laser thermometers are advised to locate high temperature areas prior to servicing the system.

Air injection lines are easily replaced by anyone. Gaining access to the lines moving from the air injection pump to the exhaust manifold may be tricky, and removing the line from the manifold may be even worse. If a controlled heat source and penetrating fluid are available, even replacing this line will be simple. Always wear personal protective equipment when working with heat.