Cat Lift Trucks (& Caterpillar) C6000:
No start, blowing propane out of air filter

Recently had this issue 2 days ago, replaced all 4 coils, new spark plugs, new throttle position sensor and reset E-23 code. Got lift running great then it would go into limp mode about 2 min after running and would only run up to half throttle even when pedal all the way depressed. Wiese tech. Came out reset code and lift was fine. Now it's monday morning and it's back to not starting and blowing propane out of intake... Anyone had this issue before? If so what could be the issue.. Thank you in advance!
  • Posted 18 Feb 2019 23:58
  • Discussion started by DrSpark
  • Indiana, United States
Showing items 1 - 2 of 2 results.
I would think that the regulator is bad if it is a Nikki regulator take the top plug it has a nut with a Phillips screwdriver head in it remove it but drain down the propane system first and bont loose the o ring on the end of the plug. Install a pressure gauge it should get about 5psi with key on could go up a little on first key on but should come back to 4To ,5psi if past that the regulator is bad also it is possible that the main injector o ring is bad or broke on the end of the injector.if every thing checks out there are two popite valves in the throttle body housing that can stick of that is the case l would replace the housing hope this helps.
  • Posted 28 Dec 2022 04:40
  • Reply by Scott_
  • Pennsylvania, United States
Scott
Sounds like your propane isn't being regulated by the solenoid under the vaporizer. Check to see if there is power going to it. You can remove propane out line from vaporizer, turn on the key and see if the propane free flows. If so I'd replace that solenoid
  • Posted 28 Dec 2022 02:06
  • Reply by Vernon_Jackson
  • Texas, United States
Vernon

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