Is it an exhaust leak if your car sounds like is having a hard time running - kind of sputtering under the hood right after you start engine but quits minutes in 2004 Ford Escape?

A sputtering sound under the hood of your 2004 Ford Escape could indicate several issues, not necessarily an exhaust leak. Here are a few possible causes:

1. Spark Plugs: Worn-out or faulty spark plugs can cause engine misfires, leading to a sputtering sound.

2. Ignition Coils: Malfunctioning ignition coils can disrupt the flow of electricity to the spark plugs, resulting in misfires and sputtering.

3. Vacuum Leak: A vacuum leak in the engine compartment can cause a similar sputtering noise. Check for any loose or disconnected vacuum hoses.

4. Fuel Filter: A clogged fuel filter can restrict the flow of fuel to the engine, leading to engine misfires and sputtering.

5. Fuel Injectors: Faulty fuel injectors can cause inconsistent fuel delivery, resulting in engine misfires and sputtering.

6. Exhaust Leak: While an exhaust leak can also cause a sputtering sound, it's essential to verify its presence. Check for any visible cracks or holes in the exhaust system or listen for a hissing sound under the vehicle while the engine is running.

Identifying the exact cause of the sputtering noise requires proper diagnosis and inspection. If the sputtering persists or you notice other irregularities in the engine's behavior, it's best to consult with a qualified mechanic.