Experiencing a no-start issue with your 1994 Mercedes E320 can be frustrating, especially when it was running smoothly just recently. It’s a common problem with older vehicles, and thankfully, often diagnosable with a systematic approach. You mentioned your ’94 E320 cranks but doesn’t fire up, and you’ve already replaced the battery, ABS/ASR pump, fuel filter, and fuel pumps previously. Let’s delve into a troubleshooting process to pinpoint the issue and get your classic Mercedes back on the road.
Diagnosing a Crank, No Start Condition in Your W124 E320
When your engine cranks but fails to start, it indicates that the starter motor is functioning and turning the engine over. However, something crucial for combustion is missing. This typically boils down to issues with fuel, ignition, or sometimes, less frequently, compression or timing. Let’s explore the most likely culprits for your 1994 E320.
Fuel System Checks
Fuel delivery is paramount for your engine to start. Here’s how to investigate potential fuel-related problems: