Fuel system, ignition, and suspension repairs

Fuel System Overhaul (Front + Engine Bay)

The shop performed a complete refurbishment of both fuel pump systems—common and critical maintenance items on 964 Turbos:

Parts Replaced

• Front fuel pump (Porsche Genuine)
• Engine bay fuel pump (Porsche Genuine)
• Pressure switch
• Fuel pump 911-series variant (used in certain 964 Turbo configurations)

Labor

• Replace front fuel pump:
  Remove underbody covers → loosen fuel pump → drain fuel tank → reinstall covers → fill fuel. (2.5 hours)
• Replace engine bay fuel pump:
  Remove air filter box + power steering lines → swap pump → reinstall. (1.5 hours)

Ignition System Service

Replacement of ignition wear items to restore proper combustion and boost control:

Parts Replaced

• Distributor cap (BOSCH OEM)
• Distributor rotor (BOSCH OEM)

Labor

• Install distributor rotor & cap (1 hour)

CIS (K-Jetronic) Lean Condition Diagnosis

The shop diagnosed a lean running condition caused by a malfunctioning Warm-Up Regulator (WUR) that was not switching pressures properly.

Labor

• 3 hours of CIS testing and tuning
• Adjusted mixture to compensate for defective WUR

(Note: A faulty WUR often requires full replacement; this invoice shows tuning work only.)

Suspension Refresh

Substantial suspension modernization, with upgraded components:

Parts Installed

• Bilstein B6 front shocks (pair)
• Bilstein B6 rear shock (single)
• Front lower control arm bushing upgrade
• Steering rack bushing (urethane upgrade)
• RS-style tie rod set

Labor

• Replace shocks front and rear (8 hours)
• Remove lower control arms, press out/in bushings, replace inner & outer tie rods (5 hours)
• Perform 4-wheel alignment (1 hour)