Fuel Return Line: Service and Repair

NOTE: Fuel injected vehicles use specially constructed hoses. When replacing hoses, only use hoses marked EFM/EFI.


1. Inspect all hose connections (clamps and quick connect fittings) for completeness and leaks. Replace cracked, scuffed, or swelled hoses. Replace hoses that rub against other vehicle components or show sign of wear.


2. When installing FUEL hoses:

- Ensure that they are routed away from contact with other vehicle components that could rub against them and cause failure.

- Avoid contact with clamps or other components that cause abrasions or scuffing. Ensure that rubber hoses are properly routed and avoid heat sources.

- Use only original equipment or equivalent hose clamps, which have rolled edges to prevent the clamp from cutting the hose. Other types of clamps may cut into the hoses and cause high pressure fuel leaks. Tighten hose clamps to 1 N-m (10 in lbs) torque.

- For replacement SEE QUICK-CONNECT FITTING REPLACEMENT. Quick-Connect Fitting Replacement