TROUBLESHOOTING
CAUSES
TROUBLESHOOTING
Tighten the nuts of cylinder head in
Deficiency in pressure of compression.
Loosened nut of cylinder head.
Damage or leakage in the gasket of
cylinder.
the diagonal sequence; check the
gasket of cylinder as per the standard 1
requirement. When the engine with
the new gasket is heating, tighten the
nut of cylinder head again.
Big gap in the piston ring due to wear
and tear
Leakage caused by each gap of
piston ring lined in one direction
Make each gap of piston at angle of
120
Serious stickiness or breakage in
piston ring
Clean it by diesel fuel or change the
piston ring.
Skive the valves, or send it to repair
factory if the vestige is too deep.
Incorrect valve clearance
Adjust the gap as specified (0.15 ~ 1
0.20mm).
The valve stem is clipped in the guide
pipe
Disassemble the valve, clean the
stem and guide pipe with diesel fuel.
3. Use remote jumper to test, if it works, the remote control unit fails and needs
replaced.
4. If remote jumper does not work, please turn electronic key to "ON" position,
use a multimeter (voltage tester) to measure the voltage on the solenoid, put
positive polarity to the conjunction of blue wire and solenoid and negative
polarity to engine case, you should read 12V in your meter. If the reading is
ZERO, the solenoid control board fails and needs replaced.
If there is 12VDC power to solenoid, please troubleshoot as follows:
1. Take off solenoid from fuel pump using two wrenches. You should use one
wrench to hold the solenoid firmly and turn counterclockwise to take it off fuel
pump, at the same time, you must use the other wrench to hold metal pipe of
fuel pump for avoiding its rotating. Take out a spring and a plunger in the
solenoid, replace the solenoid (means bypassing solenoid) to fuel pump, crank
the engine and see whether you can start or not; if works, solenoid is burned
and needs replaced.
2. If you cannot solve starting problem by bypassing solenoid, fuel pump or fuel
injector may have failed.
How to test fuel pump or fuel injector?
a. Loosen the end of high pressure metal fuel pipe to fuel pump, crank engine
and see whether you can see diesel popped out of fuel pump, if you can see
diesel out of pump, the pump is fine. Otherwise, fuel pump needs replaced.
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