When to order a new Porsche 911 fuel pump?
Click here to order! Porsche 911 engines need a steady supply of fuel at the correct pressure for good performance. If the hum from your fuel pump is getting louder, it may be a sign of imminent failure. When you order your new fuel pump, be sure to get two new copper sealing rings.
Where is the fuel pump on a Porsche 964?
PLEASE NOTE: The fuel pump on the 964 C2/C4 is NOT located under the front valence like prior 911 models. The fuel pump on the C2/C4 is located on the passenger side under floor area just behind the front diff C4 and the fuel tank. You need to remove a steel cover plate to access the fuel pump.
When did Porsche start using the fuel accumulator?
The fuel accumulator is part of the Bosch K-Jetronic system, or CIS, that was used on the 911 from mid 1973 thru 1983 and 911 Turbos up until 1989. The accumulator contains an internal spring-loaded diaphragm that prevents vapor lock by keeping the system pressurized after the engine has been shut off.
When to replace the fuel filter on a Porsche 911?
For the early cars (1965-early 1973) and the late-style Carrera (1984-89), you only need to be concerned about replacing the fuel filter. The fuel accumulator is part of the Bosch K-Jetronic system, or CIS, that was used on the 911 from mid 1973 thru 1983 and 911 Turbos up until 1989.
Where is the fuel pump located on a Porsche 911?
The belly pan located underneath the car covers and protects the fuel pump. Jack up the front of the car (see Pelican Technical Article: Jacking Up Your Car ), remove this pan (see Project 59 for more details), and you should clearly see the pump.
When did Porsche 911 start using fuel injection?
In 1980, emissions requirements forced the introduction of an oxygen sensor into the system, which helped the engine to better run at the appropriate mixture level through the regulation of fuel pressure inside the fuel distributor. The two primary adjustments for the CIS are the idle speed and the mixture adjustment.
For the early cars (1965-early 1973) and the late-style Carrera (1984-89), you only need to be concerned about replacing the fuel filter. The fuel accumulator is part of the Bosch K-Jetronic system, or CIS, that was used on the 911 from mid 1973 thru 1983 and 911 Turbos up until 1989.
What happens when you run out of gas in a 911?
The 911 fuel pump is a not as simple a device as one might think. The fuel actually runs through the pump and acts as a coolant and lubricant for the entire assembly. Therefore, if you let your car run out of gas, make sure that you turn off the pump immediately, or you might damage the internal components of the pump.
What kind of fuel injection does a Porsche 911 use?
Bosch Mechanical Fuel Injection is a splendid, if not inexpensive, performance induction system. It was used on the 911S and 911E from 69 to 73 as well as the 73 Carrera RS. Porsche used various types of MFI on factory racing cars from 67 to 84.
What causes fuel pump seizure in Porsche 911?
Pump seizure — MFI pumps which have been allowed to stand idle for long periods with oil and fuel in side them often suffer from binding or sticking control racks and gumming up of fuel galleries, as well as possible seizing of internal components of the pump and regulator.
How does CIS system work on Porsche 911?
The CIS system recirculates the fuel back to the tank, therefore a full tank will act like a large cooling center for the fuel. When you shut the engine off, you might want to try leaving the fuel pump running (turn the key one notch towards starting position) for a minute or two.
What causes a Porsche 911 starter to fail?
The electrical portion of the ignition switch is another source of trouble. This small part often wears out and fails after many years. Some symptoms of this problem is an ignition switch that requires a lot of force to start the car. Another symptom is headlamps that flicker on and off when you wiggle the key.