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Trouble shooting Chart
Trouble shooting Chart
Problem
Things To Check
Remedy
Engine won't start..................................
Out of fuel
Spoiled or improper fuel
Glow plug not lighting
Glow igniter not charged
Engine overheating
Engine flooded
Air cleaner blocked
Exhaust blocked
Check/Replace Glow plug
Charge/change battery
Let cool - see "Testing the Teperature
Clean & reoil aircleaner
Engine won't turn over.........................
Engine is flooded
Engine seized
See "About Glow Plugs"
Engine starts then stalls.......................
Idle speed set too low
Glow plug is fouled/weak
Air bubbles in fuel line
Engine is overheated
Insufficient fuel tank pressure/blockage
See "Engine Tuning"
See "About Glow Plugs"
Check for split/hole in fuel line
See "Testing the Temperature"
Clear pressure line
Engine performing poorly..................
Hi-Speed fuel mixture is too rich
Engine overheating
Leaking glow plug
Carburetor dirty or blocked
Fuel bad or contaminated
Clutch slipping
Bound up drive-train
Engine worn out
See "Engine Tuning"
Replace glow plug
Try fresh fuel
Clean/Adjust/Repair
Check for binds in drive-train
Rebuild
Engine overheats...................................
Hi-Speed fuel mixture is too lean
Low-Speed fuel mixture too lean
Spoiled or improper fuel
Cooling air is being blocked
Excessive load on the engine
See "Understanding Rich and Lean
Clean head fins
Check for binds
Engine hesitates or stumbles.............
Engine overheated
Hi-Speed mixture too lean
Low-Speed mixture to rich
Air bubbles in fuel line
Glow plug fouled
See "Engine Tuning"
Check fuel line for holes
Change glow plug
Engine stalls instantly when throttle
is fully opened from idle......................
Glow plug fouled
Hi-Speed mixture too rich
Low-Speed mixture too lean
Change glow plug
See "Engine Tuning"
Engine stalls while driving around
turns............................................................
Fuel level is low
Idle speed set too low
Add Fuel
Increase Idle speed
Engine stalls while idling.....................
Low-Speed mixture too rich
Low-Speed mixture too lean
Idle speed to low
Clutch shoes dragging
Clutch spring broken
Clutch bearings failed
Engine worn out
See "Engine Tuning"
Increase idle speed
Check for broken clultch springs
Check/Clean/Replace
Rebuild
Losi 427 Customer Support
Horizon Hobby Inc
4105 Fieldstone Rd.
Champaign, IL 61821
1-877-504-0233
Losi 427 Customer Support
Horizon Hobby Inc
4105 Fieldstone Rd.
Champaign, IL 61821
1-877-504-0233