Thomas 1700 - Trouble Shooting

7-25
7
Symptom
Engine does not start
Starter does not run
Engine revolution is not smooth
Either white or blue exhaust gas is
observed
Either black or dark gray exhaust gas
is observed
Remedy
Replenish fuel
Vent air
Change fuel and repair or replace
fuel system
Clean
Clean or change
Use the specified fuel or engine oil
Use the specified fuel
Tighten nut
Adjust
Replace
Clean
Repair or replace
Repair or replace
Replace head gasket, tighten cylin-
der head bolt, glow plug and noz-
zle holder
Correct or replace timing gear
Replace
Adjust
Charge
Repair or replace
Repair or replace
Connect
Clean or change
Clean or change
Tighten nut
Repair or replace
Adjust
Repair or replace
Clean
Repair
Reduce to the specified level
Used the specified fuel
Adjust
Adjust top clearance
Lessen the load
Use the specified fuel
Clean or change
Clean or change
Cause
No fuel
Air in the fuel
Water in the fuel
Fuel pipe clogged
Fuel filter clogged
Excessively high viscosity of fuel or engine oil at
low temperature
Fuel with low octane number
Fuel leak due to loose injection pipe retaining nut
Incorrect injection timing
Fuel cam shaft worn
Injection nozzle clogged
Injection pump malfunctioning
Seizure of crankshaft, camshaft, piston, cylinder liner
or bearing
Compression leak from cylinder
Improper valve timing
Piston ring and liner worn
Excessive valve clearance
Battery discharged
Starter malfunctioning
Key switch malfunctioning
Wiring disconnected
Fuel filter clogged or dirty
Air cleaner clogged
Fuel leak due to loose injection pipe retaining nut
Injection pump malfunctioning
Incorrect nozzle opening pressure
Injection nozzle stuck or clogged
Fuel overflow pipe clogged
Governor malfunctioning
Excessive engine oil
Low grade fuel used
Fuel filter clogged
Air cleaner clogged
Overload
Low grade fuel used
Fuel filter clogged
Air cleaner clogged
ENGINE TROUBLE SHOOTING 7.5