LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1991 >> LS 400 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System Pressure Release
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel System Pressure Release

WARNING: ALWAYS relieve fuel pressure before disconnecting any fuel injection-related component. DO NOT allow fuel to contact engine or electrical components.

To relieve fuel pressure, wrap cold start injector feed pipe banjo bolt with shop towel. Slowly loosen banjo bolt to relieve pressure. With a dry shop towel, pick up any fuel which may have run onto the engine.