Firstly, due to their flexibility, automotive fuel hoses should be closely monitored for expansion during testing. The expansion of a hose may affect its sealing performance, so the test equipment needs to be able to accurately measure and record the deformation of the hose under pressure.

Secondly, the effect of temperature on test results should not be ignored. The same fuel hose may show different airtightness performance under different temperature conditions. Therefore, the ambient temperature should be strictly controlled during the testing process and the temperature data during the test should be recorded to ensure the accuracy and repeatability of the test results.