A knocking sound from the engine often triggers worst-case assumptions, but piston slap is a far more common—and usually less dangerous—culprit. It occurs when a piston lightly contacts the cylinder ...

Engine noise makes us more nervous than any other automotive sound because noise can mean expense and inconvenience. And, sometimes engine noise is nothing more than a normal dynamic of the engine's ...

Q I have a 2005 Ford Explorer V6 with 75,000 miles. The engine knocks when first started in cold conditions. As it warms up, the knocking dissipates. I tried using synthetic oil, but it hasn't helped.

You're tooling along on your way home from a cruise night or a car show when you pull up to a stop sign. As the engine drops down to an idle, you hear astrange sound from under the hood. It's not a ...

Q: I’ve got a 2005 Honda Accord V-6 with only 78,000 miles on it. I have changed the oil religiously according to the owner’s manual from the day I purchased it new. Within this last year it has ...

I have discovered an engine knocking noise and severe diesel blow-by problem in my 2015 Nissan X-Trail 1.6-litre diesel. Do we spend $10,000 for a second-hand engine and have that fitted? The car has ...

You’d expect any noise from under a car’s bonnet to be caused by the engine, but if this noise occurs before you’ve started the engine, you’re on to a real mystery. Perhaps the noise can be heard as ...

From suddenly louder-than-usual exhausts to rattling and grinding, cars can make a lot of noises that can indicate problems. A recent study from the RAC showed that almost a quarter of drivers are ...

I checked the catalytic converter and it's OK. The engine is knocking and making a sound at the tail pipe. Spark plug wires look loose. The car wasn't driven for a while. It's showing very poor gas ...

Engine noise makes us more nervous than any other automotive sound because noise can mean expense and inconvenience. And, sometimes engine noise is nothing more than a normal dynamic of the engine's ...