What are the reasons for the Changan CS35 not starting when hot?
3 Answers
The reasons why the Changan CS35 does not start when hot are as follows: 1. Fuel injector leakage. 2. Damaged carbon canister solenoid valve. 3. Insufficient fuel pressure. 4. Damaged fuel pressure regulator. 5. Poor fuel quality.
My Changan CS35 has had several instances of not starting after prolonged driving when the engine is hot. I've found that this is mostly due to ignition system issues, such as worn spark plugs under high temperatures leading to reduced ignition capability. The fuel system also frequently malfunctions, with gasoline evaporating in hot weather causing vapor lock that blocks the fuel line. Additionally, the crankshaft position sensor is prone to sending false signals after thermal expansion. The battery's voltage becomes unstable under high temperatures, affecting startup. The ECU control module's failure rate increases when hot. I must remind everyone that if the car doesn't start, don't force it repeatedly as this can damage more components. Quickly check the spark plugs, fuel pump, and sensors. During regular maintenance, pay attention to cleaning the cooling system and ensure proper ventilation in the engine compartment. Hot engine failures are quite common; after repairs, I even installed a temperature monitoring assistant to prevent similar issues.
From a technical perspective, this issue in the Changan CS35 has multiple causes. Difficulty starting when the engine is hot is often due to sensor failures, where the crankshaft position sensor loses signal packets when heated, triggering the ECU's protection mechanism. The ignition coil may experience internal short circuits and premature aging as temperatures rise. The fuel pressure regulator can expand under high temperatures, leading to unstable fuel supply. Additionally, thermal expansion and contraction of wiring connections may loosen and interrupt current flow. Battery thermal degradation results in insufficient voltage and reduced power. For troubleshooting, use an OBD scanner to read fault codes for quick identification. Alternatively, manually test the spark plug ignition condition. Regular replacement of wear-prone components like ignition coils and using higher-grade fuel can mitigate risks. If encountering the issue, remain calm and document symptoms for repair reference.
