O-rings had to fit both the top and bottom of the injector. The bottom fit was fine, but the top o-ring was too small. My engine is a 2001 SOHC 4.0 that has a slightly larger o-ring on top. I order a new injector from my dealer and solved my problem.
MICHELIN Energy XM2+ 205/65 R15 94V Summer
35 Review
1.5 Inch Leveling Lift Kit Compatible With 2004-2022 F150οΌLeveling Lift Kit Fit For 2004-2022 F150 2WD 4WD Forged Front Strut Spacers Raise The Front Of Your F150 By 1.5
13 Review
MICHELIN Energy XM2+ 185/65 R15 88H summer
29 Review
2 Vepagoo 10In 13Lb/58N Gas Shock Spring Strut Lift Support For Cabinet Door Truck Tool Toy Box Lid - C16-03213
13 Review