: Carbon buildup in the small metal pipes or rubber hoses connected to the turbine upstream pressure sensor is a frequent culprit.
The MIDR engine is renowned for its "under-stressed" nature. Because it produces modest power relative to its displacement, the internal components (crankshaft, pistons, liners) do not operate at the edge of their metallurgical limits. This translates directly to . Many 148e22 units have clocked over 500,000 kilometers (310,000 miles) and are still pulling daily duties. renault 148e22
With the ignition on but the engine off, the upstream pressure should roughly match atmospheric pressure. : Carbon buildup in the small metal pipes
