LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volkswagen >> 1988 >> Fox Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH Cis-E >> Testing >> Fuel Delivery & System Pressures >> Main Pump Delivery Volume
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Main Pump Delivery Volume

  1. Check transfer pump (if equipped) and fuel filter. Disconnect fuel return line and place in measuring container. Switch on fuel pump with jumper switch. Check fuel pump delivery volume for 30 second period. Delivery rates are given with voltage reading at pump as volume will change with different voltages.
  2. Minimum delivery volume for Fox, Quantum and Quantum Syncro models is .71 qts. (.68L) for 30 seconds with reading of 11.4 volts at fuel pump. Minimum delivery volume for other models is .62 qts. (.59L) with 11.4 volts at fuel pump.
scientia non olet · About LEMON Manuals