* Low Fuel/Refueling Agitation: When the fuel tank is low, any sediment or debris in the tank gets stirred up during refueling. A clogged filter can't handle this sudden influx of dirty fuel, leading to immediate blockage and stalling.
* 30-Minute Wait: After sitting for 30 minutes, gravity can help settle some of the sediment, allowing enough fuel to pass through the partially clogged filter for the engine to restart and run. The filter is still restricted, however.
Other signs of a bad fuel filter (which may or may not be present in your case) include:
* Hesitation or sputtering: The engine struggles to get enough fuel, causing rough running, hesitation during acceleration, and sputtering.
* Reduced fuel economy: A clogged filter restricts fuel flow, reducing the engine's efficiency.
* Difficulty starting: The engine may crank but fail to start due to insufficient fuel supply.
* Engine surging: The engine may accelerate and decelerate erratically.
* Weak acceleration: The engine lacks power and struggles to accelerate.
Since your symptoms strongly point towards a fuel filter problem, it's highly recommended to replace the fuel filter. This is a relatively inexpensive and straightforward repair, and doing so will likely solve the issue. It's also a good preventative measure given the age of your car.
Important Note: While replacing the fuel filter is likely the solution, it's always a good idea to check other potential causes, such as:
* Fuel pump: A weak fuel pump could also lead to similar symptoms.
* Clogged fuel lines: While less common, debris can build up in the fuel lines.
However, given the correlation between refueling and stalling, the fuel filter is the most probable culprit. A mechanic can diagnose more definitively but replacing the filter is a worthwhile first step. Remember to handle gasoline with care and follow safety precautions.
