Return lines should be inspected for
kinks or crushed lines or anything that
might restrict fuel flow.
inspect fuel return check valve for any
restrictions. Replace valve (para. 3-36).
Replace fuel lines (para. 3-26).
If you came here from the startability
tests, return to STEP 5. page 248.
If you havent run the startability tests
yet, go to STEP 1, page 246.