Fuel System Troubleshooting; Fuel System Tool; Engine Cranks But Won't Start; After Buring During Deceleration - Honda Gold Wing GL1200D Shop Manual

FUEL SYSTEM
TOOL
Float level gauge
TROUBLESHOOTING
Engine cranks but own't start
• No fuel in tank
• No fuel to carburetor
• Engine flooded with fuel
• No spark at plug {ignition system faulty}
• Air cleaner clogged
• Intake air leak
• Improper choke operation
• Improper throttle operation
• Incorrect choke cable free play
• Fuel tank vent blocked
After buring during deceleration
• Ignition system faulty
• Faulty slow air cutoff valve
• Lean mixture
Misfiring during acceleration
• Ignition malfunction
• Lean mixture
Backfiring
• Ignition malfunction
• Carburetor malfunction
• Lean mixture
Lean mixture
• Clogged fuel jets
• Piston stuck closed
• Faulty float valve
• Float level too low
• Fuel tank cap vent blocked
• Fuel strainer screen clogged
• Restricted fuel line
• Intake air leak
• Restricted or faUlty fuel pump
4-2
~HONDA.
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GL1200D·GL1200A
07410-0010000
Engine idles roughly, stalls, or runs poorly
• Air cleaner clogged
• Ignition malfunction
• Carburetors not synchronized
• Fuel contaminated
• Intake air leak.
• Idle speed incorrect
• Rich mixture
• Lean mixture
• Low cylinder compression
• Incorrect pilot screw adjustment
• Slow air cutoff valve faulty
• Starter valve stack open
Poor performance (driveability) and poor fuel economy
• Fuel system clogged
• Air cleaner clogged
• Ignition malfunction
Incorrect fast idle speed
• Incorrect choke cable free play
• Starter valve stack or damaged
• Starter air line clogged
• Starter valve not synchronized
Rich mixture
• Clogged air jets
• Faulty float valve
• Float level too high
• Starter valve stack open or damaged
• Dirty air cleaner
• Needle and seat faulty or worn