Discussion:
Nissan LPG intermittent no start

I have a Nissan 60 series forklift.
Model: MUG1F2A30LV
Intermittently this forklift refuses to start! When the forklift is operating correctly the power to the fuel solenoid comes on for a second when the key turns on then goes off till the engine starts. At that point power to the fuel solenoid comes on and stays on till shutdown.

When the engine won't start, the thing I seem to find is the power to the fuel solenoid does not turn on and off when the key turns on. To get this thing to start all I have to do is jump the solenoid briefly and then start the engine. Since at this point the truck runs fine, wiring issues between the solenoid and the computer or whatever are effectively ruled out. Consequently I haven't torn the wiring harness apart.

Questions I have:
How does the computer decide to turn on the LPG fuel solenoid.
What should I be checking to help resolve this issue?
Any Ideas, thoughts, or suggestions would be greatly appreciated.
  • Posted 12 Jun 2019 02:50
  • Discussion started by calvin
  • Illinois, United States
Showing items 1 - 2 of 2 results.
Thanks for asking frits_f.
To avoid seeing leakage voltages, I used an incandescent test light. Harbor Freight variety! Light versus no light. When it won't start you can turn the truck on and off all day long and you don't get the.5 second pulse that always occurs at switch on when it's running right.

I have four of these trucks and have compared it to the others. All of them pulse the solenoid once at "key on".
  • Posted 13 Jun 2019 06:42
  • Reply by calvin
  • Illinois, United States
Did you measure the voltage on the solenoid or is there just no click? Sometimes the LPG valves stick. And with a jump wire you have a slight higher voltage that is just enough to activate the valve...

I have no knowledge about the Nissan electronics.
  • Posted 12 Jun 2019 22:37
  • Reply by frits_f
  • utrechte, Netherlands

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