Landoll Bendi B40i4 Maintenance Manual Download

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5-12

F-581-R1

ENGINE WITH FUEL SYSTEM

heat shield and then through the spring to ground. It has
also been noticed that it is very difficult to determine if the
clip at the end of the plug wire is truly snapped on the
spark plug. It seems with some of the wires the spark
wire can slide up and down inside the boot so when you
go to push the wire onto the plug it is just the boot which
is being pushed down and you feel no “snap” of
connection. To eliminate all these issue take the metal
heat shield and wire spring right off the plug wire. Then
attempt to push the end clip out the end of the boot so
you can see it. Then by holding the plug wire firmly at the
entrance to the boot push the plug wire clip onto the
spark plug tip. You should feel a noticeable snap as it
clips on the plug. Try running the engine with all the plug
wires having the heat shields and springs removed and
securely fastened to the plugs and check operation.

Are the injectors firing?

The best and most thorough way to check the injector
circuit is to insert a “noid” light in place of the injectors
one by one and cranking the engine to see that the light
flashes. A noid light can be approximated by using a 12
volt flashlight or tail-light bulb with wires soldered to the
positive and negative contacts of the bulb. To see if the
injectors are mechanically stuck, replacement with
known good injectors is the best test. To find if there is
one bad injector in the bunch take the engine rpm up to
approximately 1200 rpm and using the S3000 monitor’s
“Injector” tab disable one injector at a time and see if
there is a drop in rpm as each injector in turn is disabled
(the rpm needs to be above idle since if the forklift is on
idle the idle governor will try to keep the rpm constant by
opening the throttle when you disconnect an injector). If
disabling an injector has no effect on the rpm it is likely
that cylinder is not firing.

Is there fuel pressure at fuel rail?

Fuel pressure can be read via the S3000 monitor. The
fuel pressure should be approximately 180 to 210 kPa
when the engine is not running and 88 kPa above
manifold pressure when it is running (this is
approximately 125 to 140 kPa at idle). If the engine will
start and run look at the “Feedback” window on the
S3000 Monitor, if the values are hitting -25% or +25%
this may indicate the fuel pressure is too high or too low.
Check that the vacuum line that supplies the manifold
pressure, from the manifold to the vaporizer, is
connected and not leaking or plugged.

Is LPG vaporizer Lock-Off opening?

The LPG lock-off can be checked for activation with a
iron bar (or other metal which is attracted to a magnet),
by holding it close but not touching the solenoid tower of
the vaporizer and then turning the key “ON”. Since the
vaporizer solenoid is a high side control it can also be
checked by watching for the appearance of battery
voltage at CPS207 pin 1 at key on (for 2 seconds as
mentioned above).

Do you have No or Low Cylinder
compression?

Check compression in each cylinder using a
compression gauge. Typically a cylinder will have 140 to
160 PSI of cranking compression. Low compression
could be caused by burnt exhaust valves, a bad head
gasket, worn rings and cylinder or a broken timing belt.

DTC codes

Shown on the next page are the DTC codes with
descriptive details: