Porsche 944 Turbo Fuel System Pressure Tests (1986 - 1989)

All internal engines need three things to run: air, fuel and spark. As engines have become more complicated, powerful and emission regulation dependent, keeping the fine balance of a proper running engine has meant tighter tolerances on the air, fuel mixture and timing of the spark.
If your engine is not running properly or not at all, checking the fuel pressure is one of the first things to do to determine that the motor is getting fuel and the right amount. This article will walk you through how to check your fuel pressures for all Porsche 944 engines.
You will be working around gasoline so make sure to take the proper precautions. Always wear proper gloves and eye protection. Work in a well-ventilated area and keep any open flame, spark or heat (shop lights) away from the area.
There is going to be some gas spillage so be prepared to collect it in rags and dispose of the rags in accordance with your local regulations. NEVER store gas soaked rags as they become very combustible.
If possible let the engine rest for at least a couple of hours before performing these tests to allow the system to depressurize.
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