Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Fuel Return Line: Testing and Inspection

Fuel And Vapor Line Components:





INSPECTION:
1. Check the hoses and pipes for cracking, bending, deformation or restrictions.
2. Check the canister for restriction. SEE EVAPORATIVE CONTROL SYSTEM TESTING.
3. Check the fuel filter for restrictions and damage.

Fuel Rail, Injectors, Fuel Pressure Regulator And Components:





4. Check the fuel rail at all of its attachment points for any sign of leakage.