How To Start an Aircraft Engine in the Heat or Cold?

While the starting of a hot or cold automobile engine is often a straightforward process that consists of inserting a key and igniting the engine, aircraft often face more difficulty as a result of such extraneous factors. Weather is often a major cause of starting issues, and combating such problems may differ based on whether the engine is a carburated or fuel-injected type. As both engine types face issues in different temperatures, it is important to understand when such problems occur and how to combat them. In this blog, we will discuss some of the common starting issues faced by aircraft engines as a result of weather, allowing you to better understand their troubleshooting.

Aircraft Engine starting Issues in Heat or Cold Weather

Carbureted Engines

For aircraft that feature a carbureted engine, one may encounter the common issue of the engine not starting when it is cranked during colder temperatures. Even after priming and cranking the engine multiple times, the cold engine may still have difficulty initiating operations. When a carbureted engine is primed, the common method is to have fuel sprayed into the intake manifold of one or more cylinders. If only one cylinder is being primed, then there may not be enough fuel to amply fire up the engine during cold weather.

Fuel atomization is another source of issues, due to the fact that the fuel-and-air mixture is not optimal for such conditions. If the engine fails to start, it may mean that the fuel-and-air mixture that is entering the cylinder is not enough to sufficiently get systems up and running. While there are no concrete fixes for such problems, the easiest solution is to simply warm up the engine. This can be done in various ways, many pilots utilizing an engine pre-heater or storing their aircraft in a heated hangar. Once the engine is sufficiently warmed up, fuel atomization should reach a point that allows for the system to start.

Fuel-Injected Engines

While carbureted engines face various issues when temperatures are low, fuel-injected engines often have problems in the heat as a result of vapor lock. Avgas is the most common fuel type for aviation, and such fuel is volatile in nature. This means that it will enter a gaseous form when heated up. If this occurs to a significant degree, the fuel pump will be unable to properly function as it is difficult to pump vapor through a tube instead of liquid.

Generally, vapor lock occurs after the engine has been running for a long time and is shut off upon landing. As the

Conclusion

With such knowledge, you can better start and protect your engine when faced with intense heat or cold. At NSN Parts Now, we are your sourcing solution for top-quality aircraft engine parts,offering reciprocating engine parts, turbine engine products, combustion chamber components, and so much more. Take the time to explore our current set of offerings at your leisure, and you may request quotes for your comparisons with ease through our RFQ service. With AS9120B, ISO 9001:2015, and FAA AC 00-56B certification and accreditation, we guarantee high quality parts for every order, all of which have been sourced from leading global manufacturers that we trust. Furthermore, we also provide expedited shipping on domestic and international orders through the use of our supply chain network, ensuring that we meet your time constraints. Initiate the purchasing process today and see why customers choose to steadily rely on NSN Parts Now for all their operational needs.