13
Need help or have any questions? Email us at [email protected]
PROBLEM
CAUSE
SOLUTION
1) Engine does not start
A) Failed glow plug
A) Replace glow plug with new one
B) Glow Starter not charged and/or faulty
B) Fully charge glow starter and/or replace
C) Idle mixture screw set too lean
C) Reset idle mixture to factory setting
D) Old or contaminated fuel
D) Replace with new fuel
E) Engine flooded with too much fuel
E) Remove glow plug and expel fuel from cylinder
F) Air leak in fuel system and/or engine
F) Replace fuel lines and/or tighten all engine bolts
2) Engine does not draw fuel
A) Air leak in fuel system and/or engine
A) Replace fuel lines and/or tighten all engine bolts
B) High speed needle valve fully closed
B) Reset high speed needle valve to factory setting
C) Idle mixture screw set too lean
C) Reset idle mixture to factory setting
D) Fuel lines kinked
D) Check and straighten fuel lines
E) Defective fuel tank
E) Replace fuel tank
3) Engine does not transition
A) Failed and/or wrong type glow plug
A) Replace with new recommended glow plug
B) Old and/or wrong type fuel
B) Replace with new recommended fuel
C) High speed needle valve set too rich
C) Reset high speed needle valve to leaner setting
D) Idle mixture set too lean
D) Set idle mixture richer
E) Idle mixture set too rich
E) Set idle mixture leaner
F) Air leak in fuel system and/or engine
F) Replace fuel lines and/or tighten all engine bolts
4) Engine overheats
A) Engine running too lean
A) Richen high speed needle valve
B) Body to Restrictive
B) Open larger vents in body to allow air to enter and exit
C) Wrong type of fuel used
C) Use fuel recommended only for R/C cars
D) Engine not fully broken in
D) Allow engine further break-in time
5) Engine vibrates excessively
A) Engine and/or engine mounts loose
A) Tighten all engine mounting bolts
6) Engine does not idle down
A) Idle stop screw out of adjustment
A) Adjust idle stop screw so carb barrel stays open 1mm
XTM .15 Engine with Rotary Carb and Pull-Start
XTM Racing Baja Outlaw Nitro Truck Chassis
PROBLEM
CAUSE
SOLUTION
1) Truck pulls to one side
A) Steering trim out of adjustment
A) Readjust trim to center both wheels
B) Toe-in not equal
B) Readjust the toe-in to 1 - 2 degrees.
C) Wheel on one side is hanging or has damaged bearing
C) Remove wheel and clean bearing. Replace if necessary
2) Brake seems ineffective
A) Brake linkage out of adjustment
A) Readjust brake linkage
B) Brake disc worn
B) Replace brake disc
3) Clutch does not engage
A) Clutch shoes damaged or worn
A) Replace clutch shoes
B) Clutch bell damaged or worn
B) Replace clutch bell
4) Clutch does not disengage
A) Clutch springs worn or damaged
A) Replace clutch springs
5) Truck does not "go"
A) Stripped spur gear
A) Replace spur gear
B) Stripped differential gear
B) Replace differential gear
6) Suspension not smooth or free
A) One or more shocks sticking
A) Clean and/or rebuild the affected shock
B) Bent shock shaft
B) Rebuild affected shock
C) Bend or otherwise damaged hinge pin
C) Replace hinge pin
7) Shocks leaking oil
A) Shock seals worn
A) Replace shock seals
B) Bent shock shaft
B) Rebuild affected shock