Why does the Roewe 750 fail to start despite having fuel and spark?

[McIris]

There are multiple reasons why a Roewe 750 may fail to start despite having fuel and spark. It is recommended to have it inspected by professionals at a 4S dealership based on the specific situation. More information about the Roewe 750 is as follows: 1. As the first mid-to-high-end sedan product mass-produced in China with authentic British design and technology genes, the Roewe 750 inherits British noble temperament. Its classic and extraordinary styling originates from British royal heritage, exuding elegance and prestige. 2. The rear of the Roewe 750 is modern and refined, combining elements of grandeur and avant-garde. The trunk lid smoothly connects with the rear window curve, enhancing dynamic factors and reflecting outstanding performance.

[OGrant]

Yesterday, a fellow owner asked me about their Roewe 750 not starting despite having fuel and spark. Here are some common causes: It could be incorrect ignition timing, such as a dirty or faulty crankshaft position sensor, preventing the spark from igniting the air-fuel mixture. Another possibility is insufficient fuel pump pressure or clogged fuel injectors, where the fuel gauge shows fuel but supply is inadequate. Air system issues like a faulty MAF sensor can send incorrect signals to the ECU, cutting off fuel injection. Compression problems, such as poor valve sealing or low cylinder pressure, can also prevent ignition. ECU malfunctions are quite common too—it's advisable to use a diagnostic tool to read error codes for troubleshooting. If the car won't start, avoid excessive cranking to prevent engine damage; pull over immediately and turn on hazard lights. Regular maintenance checks on the ignition and fuel injection systems can prevent most issues. These problems often occur in older Roewe 750s, but timely attention should resolve them.

[VonAubree]

That day, I took my Roewe 750 for an outing, but it stalled halfway and wouldn't start again. The fuel gauge and spark were normal, and I was sweating with anxiety. After checking for a long time, I found that the air flow sensor was clogged with dust, causing the ECU to misjudge the stall signal. It started right up after cleaning. The experience taught me: failure to start may be due to sensor faults like MAF or CPS interfering with the air-fuel mixture, causing inaccurate fuel injection and preventing ignition. Or, it could be a clogged fuel line—even if the fuel pump is working, low pressure might prevent starting; try lightly pressing the accelerator to assist. Compression issues, such as seal leaks, require professional cylinder pressure testing. Preventive measures include cleaning sensors regularly and replacing filters on schedule. Don't force-start the car—safety first, and tow it to a repair shop if necessary.

[VonJulia]

The Roewe 750 fails to start despite having fuel and spark, with possible causes including: ignition system issues such as weak spark from spark plugs or incorrect timing due to CPS sensor errors; fuel supply problems like clogged filters or obstructed injectors; air intake restrictions such as MAF sensor malfunctions affecting airflow; poor engine compression due to valve issues preventing ignition; or ECU errors disrupting the ignition or fuel injection sequence. Troubleshooting sequence: check spark quality, fuel pressure, airflow, compression test, and finally ECU diagnostics. Regular maintenance helps prevent component aging and failures.