1. Home
  2. Forums
  3. Maintenance & Troubleshooting
  4. Forklift Misfires When Warm and Shuts Off Under Heavy Load

Discussion:
Forklift Misfires When Warm and Shuts Off Under Heavy Load

I have a Komatsu FG25s-4, which misfires when it is warm. The misfire is slight. However, the forklift shuts off whenever I lower an object with it. It will lift perfectly fine. It used to only shut off when moving an object sideways. Could a bad fuel pressure regulator cause this? The forklift has an IMPCO Model J fuel pressure regulator. Is there a way I can find out if the fuel pressure regulator is bad?
  • Posted 6 Sep 2019 02:45
  • By Michaellong
  • joined 6 Jun'19 - 4 messages
  • California, United States
Post a ReplyReport this post
Showing items 1 - 1 of 1 results.
You can either open it up and check it out or run a pressure check. Pressure should be 2-4#. The test port is a 1/8" pipe hole in the rear of the regulator. Kits are cheap for the model J.
  • Posted 6 Sep 2019 23:58
  • By BREWSKI
  • joined 10 Jan'12 - 1,699 messages
  • Nebraska, United States
BREWSKI
Post a ReplyReport this post

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.

Upcoming in the editorial calendar
MANAGING MIXED FLEETS
Oct 2025
ASSET FINANCE
Nov 2025
Ask us about editorial contribution

PREMIUM business

Cascade Corporation (World HQ)
Leading manufacturers of attachments, forks and related technologies for forklifts and AGVs.
Cascade Corporation (World HQ)
Upcoming in the editorial calendar
MANAGING MIXED FLEETS
Oct 2025
ASSET FINANCE
Nov 2025
Ask us about editorial contribution
Taylor TX330S
Taylor TX330S 2013
Coraopolis, Pennsylvania, United States
Used - Sale & Hire
USD159,500
Toyota 3FD100
Toyota 3FD100 1995
Yokohama, Japan
Used - Sale
|
Your Focus
Ellie Gabel
When warehouses go dark: protecting connected material handling operations from cyber threats
Ellie Gabel
Read blog
Read more Your Focus blog articles
Latest job alerts …
Road Service Technician
Danville, IL, United States
View more jobs alerts
Fact of the week
At the opening ceremony of the Sydney Harbour Bridge in 1932, marching bands were instructed to walk out of step as they crossed the bridge. This unusual directive was given as a precaution due to concerns about the bridge's structural integrity during its early use.