Ingersoll-Rand 7120 - Manual (Page 40)

37 7/120 (P425AWIR), 9/110 (XP375AWIR), 10/105 (HP375AWIR), 14/85 (VHP300AWIR),
7/170 (P600WIR), 10/125 (HP450WIR), 14/115 (VHP400WIR)
Symptom Problem Solution
Engine cranks but will
not start Incorrect starting procedure. Verify correct starting procedure.
No fuel. Check fuel in tank.
Exhaust restricted. Check and correct exhaust
restriction.
Fuel filter plugged or full of water. Replace fuel filter or drain water
from filter.
Injection pump not getting fuel or air
in fue system. Check fuel flow at supply pump or
bleed system.
Engine hard to start or
will not start Engine starting under load. Disengage PTO
Improper starting procedure. Review starting procedure.
No fuel. Check fuel tank.
Air in fuel line. Bleed fuel line.
Cold weather. Use cold weather starting aids.
Slow starter speed. See “Starter Cranks Slowly”.
Crankcase oil too heavy. Use oil of proper viscosity.
Improper type of fuel. Consult fuel supplier; use proper
type fuel for operating conditions.
Water, dirt, or air in fuel system. Drain, flush, fill, and bleed system.
Clogged fuel filter. Replace filter element.
Dirty or faulty injection nozzles. Have authorized servicing dealer or
engine distributor check injectors.
Electronic fuel system problem if
equipped) See your distributor or servicing
dealer.
Engine knocks Low engine oil level. Add oil to engine crankcase.
Low coolant temperature. Remove and check thermostat.
Engine overheating. See “Engine Overheats”.
Engine cold Wrong or defective thermostat.
Remove and check thermostat.