Boxster S (987) F6-3.4L (2008)
Fuel Pressure: Testing and Inspection
Checking Quantity Delivered By Fuel Pump
Checking Quantity Delivered By Fuel Pump
Tools
Technical values
Preliminary work for quantity delivered by fuel pump
INFORMATION: The battery voltage must not fall below 12 volts during the fuel delivery rate check.
1. Check the battery charge state using a voltmeter or the Porsche PIWIS Tester. The battery voltage must not fall below 12 volts during the check.
2. Remove rear cover for underbody.
Checking quantity delivered by fuel pump
INFORMATION: The battery voltage must not fall below 12 volts during the fuel delivery rate check.
DANGER:
Risk of fire from escaping fuel.
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Danger of fatal injury and damage to property.
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Observe basic safety instructions when working on the fuel system.
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Secure working area.
1. Attach or mount a warning sign in a clearly visible position on the vehicle.
2. Reduce fuel pump supply pressure. To do this, remove the cover of the fuse carrier in the left footwell and take out the fuse for the fuel pump
level D, fuse F1 (No. 1 from left). Then start the engine for several seconds. This procedure does not cause an entry to be made in the fault
memory. Insert the fuse again and replace the cover.