Alliance/Encore L4-1721cc 105 CID (1985)
Engine Oil: Technical Service Bulletins
Engine - Coolant/Oil Leak Detection
36E820
OCTOBER 1985
ALL MODELS
ENGINE
Attention: Workshop, Parts Department
ENGINE COOLANT/OIL LEAK DETECTION
A high intensity black lamp has been approved for use in pinpointing engine coolant and oil leaks.
The following procedures have been developed to detect engine coolant leaks and for other fluid leaks: power steering fluid, automatic and manual
transmission fluid and engine oil.
PROCEDURE
Engine Coolant Leak Detection
NOTE:
All models (except imports) now have a coolant leak detection additive in the cooling system when the vehicle is delivered from the factory.
This additive will appear bright green in color under the black lamp.
1.
Add one ounce of coolant additive to the engine cooling system, if necessary.
2.
Start and run the engine until it reaches operating temperature.
3.
Place the heater controls in the heat mode to circulate coolant through the heater system.
4.
Plug the black lamp into an electrical outlet and turn the switch to the ON position. When it is ready to use, it will glow.
5.
Aim the black lamp at the components of the cooling system to pinpoint leaks in the radiator, hoses, heater core, water pump and engine assembly
components that house the engine coolant. If leaks are present, the additive will be seen under the black lamp as a bright green glow. This additive
is water soluable for ease of clean-up for repeat inspections.
PROCEDURE
Oil Leak Detection
NOTE:
All models (except imports) have a dye additive added to the engine oil and automatic transmission fluid at the factory. Because of the
different additives used, the engine additive may appear light blue or yellow when viewed under the black lamp. The automatic transmission
fluid additive will appear a greenish-yellow color under the black lamp.
When checking for an oil leak, verify the color of the additive used by removing the dipstick and observing the oil under the black lamp.
1.
Add one ounce of oil leak detection additive to the system that is suspected to be leaking, (engine oil, transmission, etc.), if necessary.
2.
Start and run the engine until it reaches operating temperature to allow the additive to circulate throughout the system. Detecting extremely small
leaks may require running the engine for a longer period of time.
3.
Plug the black lamp into an electrical outlet and turn the switch to the ON position. When it is ready to use, it will glow.
4.
Raise the vehicle.
5.
Aim the black lamp at the areas that are suspected of leaking and look for a bright greenish-yellow glow at the leak origin.
PARTS
DESCRIPTION
QUANTITY
PART NUMBER
LAMP, High Intensity Black (includes six containers fo Flourescent Oil Additive
PN 8980 002 475)
1
8980 002 473
ADDITIVE, Fluorescent Oil
24 (1 oz. containers)
8980 002 524
ADDITIVE, Fluorescent Oil
6 (1 oz. containers)
8980 002 475
ADDITIVE, Fluorescent Coolant
6 (1 oz. containers)
8980 002 476
