Buell 2007 LIGHTNING Service Manual

2007 Buell Lightning: Fuel System 4-35
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Test 4.13 (Part 1 of 2)
Run fuel pressure test as described under
4.13 FUEL PRESSURE TEST. Fuel pres-
sure should remain steady at 49-51 PSI
(338-352 kPa). Does it?
Flush out fuel cell.
See 4.39 FUEL
PUMP.
YES
No trouble
found. Review
symptoms.
YES
Check for faulty fuel
pump and replace.
See 4.39 FUEL PUMP.
NO
Check for faulty fuel
pump and replace.
See 4.39 FUEL
PUMP.
Low pressure. High pressure.
Check voltage drop between
battery positive (+) and Termi-
nal D (-) on pump side of con-
nector [89] during first two
seconds after key ON. Is volt-
age greater than 1 VDC?
Check for restricted
pump inlet screen. Is
screen restricted?
NO
Move negative (-) probe to GY
wire on Terminal 87 of ignition
relay. Measure voltage during
first two seconds after key ON.
Is voltage greater than 1 VDC?
YES
Locate and repair poor
connection between ignition
relay and fuel pump.
NO
Move negative (-) probe to
GY/O wire on Terminal 30 of
ignition relay. Measure voltage
during first two seconds after
key ON. Is voltage greater
than 1 VDC?
YES
Locate and repair poor
connection between bat-
tery and ignition relay.
NOYES
Go to Test 4.13
(Part 2 of 2).
STOP
No pressure.
Replace ignition relay.

Buell 2007 LIGHTNING Specifications

General

Year	2007
Manufacturer	Buell
Model	Lightning
Category	Motorcycle
Displacement	1203 cc
Bore x Stroke	88.9 mm x 96.8 mm
Compression Ratio	10.0:1
Fuel System	Electronic fuel injection
Transmission	5-speed
Final Drive	Belt
Rear Suspension	Showa shock absorber
Rear Brakes	Single disc, 1-piston caliper
Engine Type	V-Twin
Ignition	Digital
Front Suspension	Showa inverted fork
Front Brakes	Single disc, 6-piston caliper
Front Tire	120/70 ZR17
Rear Tire	180/55 ZR17
Wheelbase	52.0 inches
Seat Height	30.1 inches
Dry Weight	395 lbs
Fuel Capacity	14.5 liters