Unstable Operation - Kipor KM2V80 Manual

is unsmooth.
4. There is leakage of fuel suction pipe
connector, and air goes into the pipe.
5. The timing spring is softening, and
the running speed lower down.
6. The fuel supply limit is too low, no
inefficient fuel volume
7. Fuel supply is not enough in the fuel
pump
8.Fuel
incorrect
9.Fuel injection pressure and injection
frog is unqualified.
10.Incorrect air valve clearance
11.Fuel with poor quality
12. The vent hole on the fuel tank cap
is blocked
13. Insufficient compress pressure in
cylinder
（1）Air valve leak
（2）Cylinder gasket leak
（3）Cylinder, piston, piston ring are
worn and tear
（4）Installation hole of fuel injector
leak
Fault symptom
１. There is air in fuel system
２ . Accelerograph pull rod is not
Unstable
flexible or the clearance is too large
operation
３.Timing is not flexible
４ . The fuel supply of fuel injection
pump to each cylinder is not balanced
supply advance angle
Table 30 Unstable operation
Cause
Check the leakage and air exhaust
Check and adjust the running speed of
engine
Make the fuel volume limit larger
Check the fuel supply in the fuel pump
is Check and adjust
Check and adjust
Check and adjust
Use the qualified fuel
Check and dredge
The compress pressure in cylinder
should be around 3.1Mpa
Check, rubbing air valve or replace air
valve, air valve seat ring
Tighten the cylinder head bolt or
replace cylinder gasket
Replace relative parts
Tighten or replace fuel injector washer
Remedy
Exhaust air, check the leak of fuel
suction pipe connector
Check on the fuel pump test table
Check on the fuel pump test table
Check on the fuel pump test table