Q: Want to buy Infinity QX4 but guy says runs great, but won't go in reverse. Is it worth $550 to buy it?

Hi there. This is a problem that comes up often on this engine. It is typically caused by a failing idle control valve or a dirty throttle body. If the throttle body is dirty then that will typically cause the...

Well, they could, but only to a small amount. If you go and put the whole synthetic, it would have a little bit less friction, but not all that much.

Car adjustable suspension could mean two things, either adjusting the ride height of the car or changing the handling characteristics. Ride height systems are usually added to the rear of vehicles to raise the rear of the car and bring...

Hey there. In many cases, whistling or whining noises can come from the belt drive system or a vacuum leak under the hood. Is your vehicle maintenance and tune-up schedule up to date? You may want to check the idle...

Charcoal canisters don't become clogged, although in exceptional cases, they can become saturated with liquid fuel which ruins their ability to store fuel vapors. If the premature shut of the refueling nozzle is occasional that is not an issue but...

The fuel pump in the fuel tank is most likely leaking fuel where it hooks to the fuel pump housing. I recommend replacing the fuel pump in the fuel tank.

There is an issue with the transmission is the main valve either is disconnected inside the transmission oil pan on the controller or the controller has an internal leak or a check ball is not holding. I recommend seeking out...

Hello, thank you for writing in. The noise may be something related to the fluid pressure inside the radiator, which is regulated by the radiator cap. You can easily have your cap pressure tested. Secondly, your cooling fans are located...

The brakes may feel stiff prior to starting the vehicle as the vacuum that exists in the brake booster when the vehicle is running may decrease when the vehicle is not running. Once the vehicle starts, the booster replenishes the...