What's the reason for the difficulty in starting the Trumpchi GS5?
4 Answers
The following are the reasons for the difficulty in starting the Trumpchi GS5: 1. Poor fuel delivery (clogged fuel pump filter; clogged fuel filter; fuel pump check valve not closing properly, etc.). 2. Too lean or too rich air-fuel mixture. 3. Air intake and vacuum system leaks. 4. Loose or poorly connected plugs and wiring. 5. Low fuel pressure or abnormal pressure retention. 6. Poor injector performance (carbon deposits, gum clogging, etc.). Here is an introduction to engine starting difficulties: 1. To troubleshoot hard starting issues in electronically controlled engines, conventional and specialized diagnostic methods can be used, or the three essential elements for normal engine operation can be checked (high-voltage spark, fuel line pressure, and cylinder pressure). Generally, if the engine starts with difficulty but runs normally afterward, it indicates no major mechanical issues. 2. When addressing engine starting difficulties, the causes mentioned above can be checked one by one. Typically, starting difficulties are more related to fuel system and electronic control issues, with fewer cases involving the ignition system (spark plug malfunction, faulty ignition coil). When checking electronic control circuits, a voltmeter and ohmmeter can be used. 3. Inspect wiring connections, check the air flow meter, coolant temperature sensor, and ECU power circuit (e.g., main relay, fuses, etc.), and examine the injection signal circuit (e.g., ECU, wiring, injectors) for loose connections or corrosion. For cold starting difficulties, engines equipped with a cold start injector should focus on checking the cold start system. The cold start injector should primarily be checked for electromagnetic coil functionality.
Over the years driving my Trumpchi GS5, the most common cause of hard starting is either an aging battery or insufficient charge. After three to four years of use, the battery tends to lose power, especially during cold starts in winter when voltage drops rapidly, causing the starter to struggle and ignition to become sluggish. Worn-out starter components, such as damaged carbon brushes, could also be the issue—check if the starter's rotation sounds normal. Additionally, insufficient fuel pump pressure may lead to irregular fuel supply, affecting ignition efficiency, though this occurs less frequently. Poor wiring connections or blown fuses should also be inspected. It's advisable to first use a multimeter to test the battery voltage; if it's below 12 volts, replacement is necessary. Regular vehicle inspections can help avoid roadside breakdowns.
I've experienced difficulty starting the GAC GS5 before. One morning when I urgently needed to use the car, it wouldn't start. Later, it was found that the spark plugs were severely carbonized and eroded, causing ignition failure. After replacing the spark plugs, the situation improved. The lifespan of spark plugs is generally around 30,000 kilometers, and neglecting to replace them can easily lead to problems. Engine oil that's too thick can also increase starting resistance, especially during seasonal changes when choosing the right viscosity is crucial. A clogged fuel filter can indirectly affect starting as well, so it's recommended to replace it during annual inspections. Before starting the car, it's good practice to power on the system for a self-check, which can help detect abnormalities in advance and reduce trouble.
As a female driver who frequently drives on city roads, my Trumpchi GS5 often has difficulty starting in cold weather. Low temperatures reduce battery efficiency, causing the starter to turn slowly and resulting in sluggish ignition. Parking in a garage or preheating the engine can help. Sensors like the air flow meter, if dusty, may misjudge the air intake, leading the ECU to issue incorrect commands and cause ignition issues—cleaning them can improve performance. Difficulty starting after long periods of parking may indicate a problem with the fuel evaporation system; check if the carbon canister is faulty. If the issue improves as the season warms up, it’s likely due to environmental factors and not an urgent concern.
