How does the fuel filter in a Porsche work?
The fuel filter filters out the fuel that is pumped into the fuel injection system from the tank. With older cars that might have rusty tanks, keeping the filter fresh and clean is a very important task to keeping the fuel system running clean.
Can a faulty fuel filter cause a 911 to warm up?
Place one wrench on the filter, and the other on the line. Using this method will reduce the probability that you might damage one of the lines, or the accumulator. Sometimes a faulty fuel accumulator will cause various warm-start problems on the CIS-equipped 911.
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.
When to replace the fuel filter and accumulator?
This project details the replacement of both the fuel filter and the fuel accumulator. 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.
When to change the fuel filter in a Porsche?
However, as time passes, the fuel filter can become highly contaminated and affect the engine’s ability to run properly. Porsche recommends changing the fuel filter during the 60,000 mile maintenance schedule.
Place one wrench on the filter, and the other on the line. Using this method will reduce the probability that you might damage one of the lines, or the accumulator. Sometimes a faulty fuel accumulator will cause various warm-start problems on the CIS-equipped 911.
How do you remove fuel line from filter?
Using both of your 19mm open-end wrenches, remove the outlet line by placing your first wrench on the filter fitting and your second wrench on the fuel line fitting. Holding the first wrench stationary, turn the second wrench (the wrench closest to you) counter-clockwise to remove the fuel line from the filter.
Where does the dirt go in a Porsche 993?
This article applies to the Porsche 993 (1993-1998). Although today’s fuels are highly refined, they still contain trace amounts of dirt and debris. This dirt and debris is typically collected by the fuel filter and allows clean fuel to make its way to the fuel injectors.