Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
1.
If warning lamp lights intermittently, drain water from fuel filter.
2.
If warning lamp remains lit with engine running and ambient temperature above 32°F, drain fuel filter immediately. If lamp remains lit, replace
filter.
3.
If warning lamp remains lit with engine running and ambient temperature 32°F or below, drain fuel filter immediately. If water is frozen and
cannot be drained, open air bleed to check for fuel pressure. If no fuel pressure is present, replace filter.
4.
If warning lamp lights at high speed or under heavy acceleration, the fuel filter is plugged and must be replaced.
5.
If warning lamp remains lit and engine stalls and will not restart after initial start-up, then fuel filter or fuel lines may be plugged. Repair or replace
as necessary.
6.
If warning lamp remains lit and engine stalls and will not restart immediately after refueling, a large quantity of water has likely been pumped into
the fuel tank and the tank should be purged.
