The article considers whether it is possible to continuously monitor the technical condition of vehicles in operation without significant changes in their design. We analyze a list of faults and parameters to be controlled to ensure continuous monitoring of the technical condition of Isuzu 4FH1 diesel engine supply system elements. The results of simulating the fuel injection process using Star-CCM+ software are presented. The results of an experimental analysis of crankshaft position sensor readings confirming the simulation results are presented as well. © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIV International Conference 2020 SPbGASU “Organization and safety of traffic in large cities”