505 L4-2155cc N9te (1986)
Fuel Gauge: All Technical Service Bulletins
Fuel Gauge - Level Misinterpreted
BULLETIN NO. 219 (
12)
DATE:
February, 1987 (31)
SUBJECT:
1986 and 87 FUEL GAUGE
Fuel Gauge level markings may be misinterpreted by some customers. The following statements are common examples of a perceived inaccuracy
problem.
"I can drive for longer distances from full to half than from half to reserve." or
"Fuel gauge goes down very slowly from full to half and much faster from half to reserve."
The information provided in this Service Bulletin should enable you to determine whether you are dealing with a perceived or a real problem.
1)
Fuel Gauge Markings and Corresponding Indicated Level:
Note:
The gauge is split in 1/4's from full to half and in 1/6's from half to reserve. This provides greater accuracy of fuel level at below half a
tank.
2)
Fuel Gauge Markings and Corresponding Average Fuel Useage in U.S. Gallons.*
Note:
Fuel gauge calibration non-linear, therefore you can drive a greater distance from full to half (8 gallons) than from half to reserve (6.7 gallons).
3)
Fuel Gauge Markings and Corresponding Average Fuel Quantity in U.S., Gallons.*
Note:
3.3 Gallons of fuel in tank when gauge is on last marking (reserve). This provides an adequate reserve level but it can be mis-interpreted as
being empty.
