Discussion:
No start, excess fuel

Hey guys I have a Hyundai 30L-7M with a no start condition. It will fire on brake clean. I replaced the regulator due to a ton of fuel pressure coming from the regulator to the epr. Still will not start. The diaphragm in the mixer is in good shape with no tears or no Gunk.

I jumped pins one and four in the diagnostic port to get flash codes. It has a bunch of codes. They are 6420, 1173, 1644, 2123, 1626, 6530, 1611.

Any help would be much appreciated as I cannot find the description of these fault codes anywhere. Thanks!
  • Posted 4 Mar 2025 08:18
  • By Michael_Brown
  • joined 17 Jan'25 - 14 messages
  • Ohio, United States
Showing items 1 - 3 of 3 results.
Hi dear friend
How are you
Im afshin.

I currently have a dual-fuel Hyundai forklift 25G-7M with PSI engine.

Problem:
when I turn on the engine, acceleration doesn't any work!
Just engine run on 700 Rpm.

I try to get code with flash mil light but have many error code appears.

I wanted to get some advice from you on what could be the reasons why the gas pedal stops working.

By the way, this only happens on gasoline fuel and the device is Ok on LPG gas fuel.

I replace Fuel pump.
Injectors.fuel filter.
What do you think about this problem?
  • Posted 25 Apr 2025 03:37
  • By Afshin
  • joined 29 Aug'23 - 34 messages
  • Iran, Islamic Republic Of
Anyone have any advice. I just tried EPR and mixer as well and that still didn't help
  • Posted 13 Mar 2025 02:52
  • By Michael_Brown
  • joined 17 Jan'25 - 14 messages
  • Ohio, United States
Well, I completely took apart the EPR, the mixer and the throttle body cleaned everything up and it fired right up and I let it idle for a few minutes until I shut it off. Now I can't get it to restart again lol
  • Posted 4 Mar 2025 08:19
  • By Michael_Brown
  • joined 17 Jan'25 - 14 messages
  • Ohio, United States

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.

PREMIUM business

Hawker Powersource, Inc.
HAWKER® offers a range of hybrid motive power solutions customized to adapt as your operation's needs change.
Latest job alerts …
Movers & Shakers
Sue Tomic Sue Tomic
Board chair, Australian Supply Chain & Logistics Association (ASCLA)
Strategic business development manager, Heli Materials Handling Oceania
Chief executive officer, Hire Industry Association of New Zealand (HIANZ)
Chief executive officer, Australian Supply Chain & Logistics Association (ASCLA)
Global Industry News
edition #1258 - 27 November 2025
In this week’s Forkliftaction News , we report on Hyster-Yale laying off staff in the US amid what it describes as “challenging market conditions”... Continue reading
Crown SX3030TT4250
Braeside, Melbourne, Victoria, Australia
Hire
Taylor T650L
Morgantown, Pennsylvania, United States
Used - Sale
Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
HANDLING GOODS IN THE COLD
LOADING/UNLOADING FREIGHT
BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY

PREMIUM business

Hawker Powersource, Inc.
HAWKER® offers a range of hybrid motive power solutions customized to adapt as your operation's needs change.
Latest job alerts …
Fact of the week
According to studies published in the English Journal of Medicine, the impact of daylight savings is revealed by a 24% increase in heart attacks on the Monday following the spring shift forward. When clocks move back in autumn, heart attacks drop by about 21%, suggesting that loss of sleep is an important driver.