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Porsche 911 Turbo Troubleshooting

Do you want to stop the brake squeal when slowing down your Porsche 911 turbo? Or, do you need to know how often you need to replace transmission fluid and spark plugs? A high performance car like the Porsche 911 turbo has many unique problems not encountered on normal sedans. To understand many of them is beyond the reach of the average user. But this need not be cause for concern because verified Experts are always ready to help provide solutions.

Read below some questions raised by owners to actual problems and how Experts have answered them.

How frequently should the spark plugs and transmission fluid be replaced on a Porsche 911 turbo?

Spark plugs should be replaced at 24,000 mile intervals or once every four years. Transmission fluid should be changed after 108,000 miles or 12 years. These replacement intervals are stipulated in the Porsche maintenance manual. Plug maintenance in a Turbo is particularly significant to prevent engine knock.

After replacing an injector, why is a Porsche 911 turbo flooding in one cylinder?

This could be because of a fault in the fuel distributor which sprays fuel continuously to all injectors. The distributor varies the fuel quantity according to the airflow and engine load. It is likely, that because of an internal blockage in the distributor, more fuel is being forced down one cylinder causing it to flood. It is also possible that the cylinder is faulty because of which the fuel is not being burnt as it should. A compression test will highlight this problem. It may indicate that the compression in the faulty cylinder is significantly different to that in the others.

How to troubleshoot a click felt when turning the steering wheel of a Porsche 911 turbo?

Case Details: The car has been lowered by 2”.

This noise is being made by the springs and struts which happens when a car has been lowered. The click is made by the spring as it moves on its seating when the wheel is turned. The best thing to do would be to check that the installation has been done correctly and everything is in place. The car can continue to be driven without any risk of damage or compromise to driving stability. The user will need to live with the sound, but if it gets any worse the suspension will need to be checked.

Why does the airbag warning light on a Turbo 911 turn on after the battery was replaced?

This has been triggered by an incorrect power supply fault which sometimes happens after a battery is replaced. The fault will need to be erased for which the car will have to be hooked on to a diagnostic scan tool.

What could cause a leak in front of the driver and passenger seat of a turbo 911?

The drip appears to be condensation trickling from the air conditioning unit below the dashboard. The condensation should have drained out under the car through a drain pipe, but the pipe is probably blocked and needs to be cleaned.

What are the signs of a failing battery on a Porsche 911 turbo engine?

The first sign of a failing battery is often erratic behavior of the windows or some of the other electrical functions. Low battery voltage frequently confuses many electrical facilities like the window controller causing a window to operate on its own. If the battery is exceptionally low it will not be able to crank the engine. Later models of the 911 are particularly hard on the battery offering an average lifespan of no more than three years but beyond the warranty period of the average battery.

What causes brake squeal with ceramic brakes on a 911 turbo?

The squeal is typically heard when the brakes are applied gently. The noise is caused by pad vibration on the disc and is a common feature with high performance cars. Here are some solutions:

  • Strip the calipers, remove the pads and clean out the grooves. Lightly smear copper grease on the metal back of the pads where they contact the piston and rub it into the caliper tracks. Clean the caliper tracks thoroughly before reinstalling. Ensure that no grease remains on the friction face of the pads or on the discs.

  • Fit an anti-squeal shim between pad and piston which will dampen the vibrations.

  • A slight chamfer on the leading edge of the pads encourages the pad to sit squarely on the disc and often helps reduce the squeal.

Many common issues on a Porsche 911 turbo fail to find mentioned in the repair manual leaving a user bewildered when a problem arises. Nonetheless, there is a convenient solution which is to ask an Expert. An Expert provides timely answers which includes the appropriate repair solutions. These answers could save a user considerable time and money because all experimentation and guesswork stands eliminated.

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