Welcome Guest. Sign in or Signup

3 Answers

Injector engine fuel pump broken, low wing aircraft. Cold Start possible?

Asked by: 1544 views , , , ,
Aircraft Systems, General Aviation, Private Pilot

  Hello, on a IO360 fuel injected engine is a cold start of the engine possible with a low wing aircraft? It broke down yesterday and doesn't seem to work. We're currently stuck otherwise. Will the mechanical pump provide enough pressure when cranking? What may be the best procedure? Any experience? Thanks for the help

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

3 Answers

  1. Kris Kortokrax on May 03, 2015

    When you say that you are stuck, it implies that you are wanting to get the plane running so you can fly home (or somewhere else).

    If the electric fuel pump is inoperative, you cannot legally fly the airplane. It is unairworthy.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes

  2. Best Answer

    Bill Zaleski on May 03, 2015

    I will address the questions asked. It is obvious to me that you are asking mechanical/system questions, rather than regulatory ones.

    No, the mechanical pump alone will not provide enough pressure to start the engine. The injector flow divider on top of the engine requires at least 4 PSI in order to overcome the fuel shut off spring inside of it. You will not get this much from a spinning starter.

    You can, however, probably get it started by removing the top spark plugs and putting about 10 drops of fuel in each cylinder. Then the mechanical pump will provide enough fuel pressure to continue running.

    For regulatory guidance, refer to the first answer.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes

  3. Dood1 on May 04, 2015

    Thanks Bill, it was not a regulatory question more out of curiosity if we can’t get maintenance here. But problem seems solves, new fuel pump on the way. Still good to know the mechanics behind it. So thanks a lot.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes

The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.