Doosan (& Daewoo) G25P-3:
no spark when cold for 8-10 seconds

I have a Deawoo/Doosan GC25P-3 with a 3.0 GM that has a long crank time when cold. There is no spark during the first 8 - 10 seconds. After initial start, it starts right up every time, till it sits for 8+ hours. any thoughts? Software upgrade?
  • Posted 16 Nov 2016 05:07
  • Discussion started by roadtek
  • Massachusetts, United States
Showing items 1 - 6 of 6 results.
Hi dear friend.
how are yo?.
Im electrical technician forklift.
I have a problem with Daewoo forklift with engine GM G424FE.dual fuel.
When I starting engine engine doesn't run.

I check all of wiring and sensor everything is ok.

Just I found when ignition switch is on or starting,all sensor dosent have GND signal from SECM.
In shop manual for this model says this forklift have Delayed shutdown system.
Do you know what I should be doing for this problem?
  • Posted 25 Jun 2024 05:28
  • Reply by Afshin
  • Iran
did you get this fixed? also was any codes showing?
  • Posted 24 Dec 2017 13:50
  • Reply by forktime
  • Alberta, Canada
The P series never used an oil pressure lock out. Had one once that had a bad wire harness between the coil and distributor that caused a long crank time. I have also seen a couple now where shade tree mechanics have removed the Woodward fuel system and install an Impco system. These can be hard to start and they stall easily as the PCM no longer has any control over mixture.
  • Posted 6 Dec 2016 06:41
  • Reply by dale_mc
  • Alberta, Canada
Great idea, i thought the same and asked the shop tech doing the work to watch the oil light during cranking ( since its only a tier 2 truck it has an ops, not a sensor), he says the light goes out in 2-3 seconds but still no spark Running out of ideas. Problem with this truck is its an outside truck and here in the northeast were coming into freeze season. It will surely get worse.
  • Posted 1 Dec 2016 23:33
  • Reply by roadtek
  • Massachusetts, United States
Could it be related to oil pressure?
  • Posted 1 Dec 2016 23:00
  • Reply by stam
  • Ontario, Canada
One additional note: if a battery charger is connected during a cold start, spark occurs right away. Charging and starting systems test ok. Seems when battery voltage drops below 10.5 during cranking , no spark happens.
  • Posted 1 Dec 2016 06:08
  • Reply by roadtek
  • Massachusetts, United States

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.

Global Industry News
edition #1228 - 1 May 2025
There is simply no ignoring the push for a greener, more sustainable materials handling equipment industry as manufacturers and customers alike seek eco-friendly solutions to reduce or eliminate carbon emissions... Continue reading
UN Forklift FBT20NQZ1
HANGZHOU, Zhejiang, China
New - Sale
Toyota 8BNCU15-16.5
Flesherton, Ontario, Canada
Used - Sale
Movers & Shakers
Linda Häkkilä Linda Häkkilä
vice president, Investor Relations, Konecranes
vice president operations, Elokon Group
President, EP Equipment Europe
Senior vice president human resources, Kalmar
Terberg YT223-4X2
Balling, Denmark
Used - Sale
UN Forklift FD40T
HANGZHOU, Zhejiang, China
New - Sale
Upcoming industry events …
May 09-11, 2025 - Bangalore, India
October 21-23, 2025 - Panama City, Panama
July 15-17, 2025 - Hong Kong, Hong Kong
Latest job alerts …
Louisville, KY, United States
Louisville, KY, United States
Dubuque, IA, United States
Upcoming in the editorial calendar