Discussion:
Erratic idling

I have a Clark lift truck CMP 25 LP that is giving me trouble it turns on but hads a erratic idle the RPMs go up and down i cleaned out the LP regulator cleaned out the carburetor checked all vacuum hoses seem to be OK is this carburetor electronic It has a Harness going to the bottom of the carburetor base Will I have to get a laptop connected to the truck I was thinking maybe is the LP pressure sensor any help To get me going to the right direction to fix this unit
  • Posted 6 Jun 2022 08:00
  • Modified 6 Jun 2022 08:02 by poster
  • By Tony_Aguilar
  • joined 14 Apr'22 - 12 messages
  • Texas, United States
Showing items 1 - 3 of 3 results.
Very nice !
  • Posted 7 Jun 2022 05:11
  • By LaGrange
  • joined 15 Sep'13 - 301 messages
  • Missouri, United States
Strong in mind, Strong in Health.
Thank you that's what it was I replace the filter I need is up and running like a champ thanks again
  • Posted 7 Jun 2022 00:05
  • By Tony_Aguilar
  • joined 14 Apr'22 - 12 messages
  • Texas, United States
The symptom that you're describing is a clogged fuel filter.

If it has an IMPCO Lock off, you'll need to disassemble it and change the filter if it is dirty or deteriorated.

If the fuel system uses a fuel filter, it will most likely be attached to the propane hose near the radiator.

It's easy to find.
  • Posted 6 Jun 2022 22:00
  • By LaGrange
  • joined 15 Sep'13 - 301 messages
  • Missouri, United States
Strong in mind, Strong in Health.

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Latest job alerts …
Philadelphia, United States
Dayton OH/Cincinnati OH, United States
Prospect CT, United States
Global Industry News
edition #1250 - 2 October 2025
In this week’s Forkliftaction News , we report on a case coming out of the US where two companies and their executives have been charged with defrauding the government, after allegedly importing forklifts from China , and then selling them to government agencies while misrepresenting their origins as being from the US... Continue reading
Movers & Shakers
Rob Ott Rob Ott
Executive vice president and chief commercial officer, East Penn Manufacturing
President, Logistics UK
Director of dealer development East Coast, Big Joe Forklifts
Vice president, customer, TVH Americas