Doosan G20E-5 Service Manual

Name: Doosan G20E-5
Brand: Doosan
Rating: 5 (1 reviews)

4 pages

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Service Manual

G420FE LP/Dual Fuel Engine

420F LP/Gasoline Dual Fuel Engine

G15S-5, G18S-5, G20SC-5

GC15S-5, GC18S-5, GC20SC-5

G20E-5, G25E-5, G30E-5

GC20E-5, GC25E-5, GC30E-5, GC33E-5

SB4241E00

Apr. 2007

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Questions and Answers:

D
Dr. Denise Cooper DDSAug 4, 2025
How to troubleshoot engine cranking but not starting in Doosan Lifting Systems (Gas)?
- D
  Daniel BooneAug 4, 2025
  If your Doosan Lifting Systems engine cranks but won't start, several issues could be the cause. First, ensure the fuel tank isn't empty and is at least ¼ full. Other potential causes include a clogged fuel filter (repair or replace as needed), a faulty vapor connection (check for holes, loose clamps, or kinks), an electric fuel pump malfunction (check electrical connections, relay, and fuse), a malfunctioning fuel pressure regulator (test its operation), a malfunctioning fuel injector (test its operation), incorrect air/fuel or ignition/spark control (see Advanced Diagnostics), or no VR Sensor signal (verify the VR signal is present).
K
kristayuAug 8, 2025
Why is my Doosan Lifting Systems difficult to start (Gas)?
- H
  harrisjacobAug 8, 2025
  If your Doosan Lifting Systems experiences difficulty starting, it might be due to several reasons. Check if the fuel tank is almost empty, as this can cause fuel pump cavitations; ensure the tank is at least ¼ full. Other potential causes include a clogged fuel filter (repair or replace), an electric fuel pump malfunction (check connections, relay, and fuse, and verify the pump is operating), a malfunctioning pressure regulator (test its operation), a malfunctioning fuel injector (test its operation), or a clogged air filter (clean or replace as required). Also, incorrect air/fuel or ignition control could be the issue (see Advanced Diagnostics). For engine mechanical issues, consult the Engine Service Manual.