How to check oil - 2003 Harley Davidson FLSTFI Fat Boy

oil light means loss of oil pressure.. not good ..check oil level fill to full if low..low oil pressure will cause fuel pump to be shut off..

Check oil level in sump. Check for correct viscosity of oil for area and temperature. Have the oil pressure check on a master oil gauge to check oil sender unit. Low oil pressure comes from worn big end/ main bearings---worn hydraulic tappets-- loose head tension and oil leaking from head gasket.

Check to see if gas is getting into the oil which would raise the level. This can happen from flooding, i.e. a leaky injector dumping too much gas or possibly gas blowby past the piston rings and ending up in crankcase. If gas is in the oil most likely an injector is bad. Smell the oil and check to see if it smells like gas and or check viscosity of oil.. thin oil

Need to check the oil pump pressure or if there is a lag in pressure. You need to check if the oil lamp lights up soon after starting and if so the pressrure can be low. Also check the quality of oil , change the oil if this was not done for a long time.

Could just be out of oil. Check the oil. Don't drive it! If it has plenty of oil the oil sending unit maybe faulty.. Best have a shop check engine oil pressure with a mechanical oil pressure gauge before driving it.. Engine will be ruined if you drive it with no oil pressure.

check for a leaking oil pan gasket. or a leaking oil filter. the oil pump is inside of oil pan. good-day! and also check the valve cover gaskets out.

These maintenance intervals come from the maintenance interval calculator
at www.autozone.com, using a starting point of 25,800 miles (43000 km), and
assuming 1000 miles (1666 km) driven per month, and "severe driving conditions," which
are actually normal usage characteristics, such as frequent short trips, urban driving, waiting in traffic, driving in hot weather, trips under 16 km in cold weather, etc.

STARTING MILEAGE: 25800 (43,000 Kilometers)
Item
Action
Service History

20000 miles or 32000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


21000 miles or 33600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


24000 miles or 38400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


25000 miles or 40000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


27000 miles or 43200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


30000 miles or 48000 kilometers

Battery Check
Air Filter Element Check
Wheel Bearing Lubricate
Steering and Suspension Lubricate
Fuel Filter Replace
Oil Filter, Engine Replace
Engine Oil Replace
Fluid - A/T Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Exhaust System Inspect
Steering and Suspension Inspect
Heat Shield, Exhaust Inspect
Tires Rotate


33000 miles or 52800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


35000 miles or 56000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


36000 miles or 57600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


39000 miles or 62400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


40000 miles or 64000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate



42000 miles or 67200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


45000 miles or 72000 kilometers

Battery Check
Steering and Suspension Lubricate
Fuel Filter Replace
Oil Filter, Engine Replace
Engine Oil Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Steering and Suspension Inspect
Tires Rotate


48000 miles or 76800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


50000 miles or 80000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


51000 miles or 81600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


54000 miles or 86400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


55000 miles or 88000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


57000 miles or 91200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


60000 miles or 96000 kilometers

Battery Check
Air Filter Element Check
Wheel Bearing Lubricate
Steering and Suspension Lubricate
Fuel Filter Replace
Spark Plug Replace
Fluid Filter - A/T Replace
Oil Filter, Engine Replace
Engine Oil Replace
Fluid - A/T Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Exhaust System Inspect
Steering and Suspension Inspect
Heat Shield, Exhaust Inspect
Tires Rotate


63000 miles or 100800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


65000 miles or 104000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


66000 miles or 105600 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


69000 miles or 110400 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


70000 miles or 112000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate


72000 miles or 115200 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


75000 miles or 120000 kilometers

Battery Check
Air Filter Element Check
Steering and Suspension Lubricate
Fuel Filter Replace
Oil Filter, Engine Replace
Engine Oil Replace
Cabin Air Filter Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Cooling System Inspect
Wheel Bearing Inspect
Ball Joint Inspect
Drive/Propeller Shaft Inspect
Steering and Suspension Inspect
Tires Rotate


78000 miles or 124800 kilometers

Steering and Suspension Lubricate
Oil Filter, Engine Replace
Engine Oil Replace


80000 miles or 128000 kilometers

Battery Check
Oil Filter, Engine Replace
Engine Oil Replace
Vehicle Inspect
Brakes and Traction Control Inspect
Tires Rotate



And you can continue the pattern from there...

Check oil when oil is warm use a towel the stuffs hot.
Theres a yellow dipstick under the hood located on either side of the engine or on the back side of engine.Pull the dipstick out wipe it clean then check the oil after the oil is warm and the car sits for about 4 minutes not running.Gets all the oil to the pan.Check then if its not to the line on the warm side of the stick add oil. Check oil monthly and change oil every 3,000 miles you can add oil to the oil if low before 3,000 but do not mix two different oils use oil that the truck requires usually it tells you on the cap or inside the hood .

first make sure oil level is up, then check or just replace oil preasure switch, if light still comes on, have your oil preasure tested, could be low oil preasure or electrical problem start there. good luck.

Is it an oil pressure light or an oil change light (check the owners manual) If its an oil change light it may be time to change the oil. If its an oil pressure light you could have a short to ground in the wiring or at the oil pressure sender mounted on the engine. Also are you checking the engine oil with the engine running or off. The transmission is checked with the engine running, engine oil with engine off. If it is low on oil it will intermittently flash. Also when you check the oil wait five to ten minutes after the engine stops to let the oil settle before checking or you may get false readings.