Vapor Lock: What You Need to Know to Protect Your Vehicle

Understanding Vapor Lock and How to Prevent It from Damaging Your Vehicle

Summer is back in full force, and the extreme heat is causing trouble from drought conditions in Wichita to vapor lock in Wichita drivers’ cars and trucks. But, just what exactly is “vapor lock”? And how does it affect your vehicles during this heated up summer? So, to answer these questions, Tracy’s Tire Pros explain what vapor lock is, how it happens, and how you can prevent it to ensure that your car runs smoothly, especially during the warmer months.

Vapor lock is a term that might sound more at home in a science fiction novel than in discussions about car maintenance. But it’s a real and potentially serious issue that can affect your vehicle’s performance.

What Is Vapor Lock?

Vapor lock occurs when the fuel in your vehicle’s fuel delivery system changes from a liquid to a vapor state. And when this happens it creates a blockage that prevents the engine from getting the fuel it needs to run properly. Of course, this phenomenon is more likely to happen in older vehicles with carbureted engines. But it can also affect modern fuel-injected engines under certain conditions.

Causes of Vapor Lock

There are several factors that can contribute to vapor lock:

High Temperatures: Extreme heat can cause the fuel to vaporize before it reaches the engine. And this is why vapor lock is more common in hot weather or after the engine has been running for a long time.
Low Fuel Pressure: Insufficient fuel pressure can make it easier for fuel to vaporize in the fuel lines.
Fuel Composition: Certain types of fuel, especially those with higher volatility, are more prone to vaporization.
Fuel Line Routing: fuel lines that are routed too close to hot engine components can cause the fuel to vaporize within the lines.

Symptoms of Vapor Lock

Recognizing the signs of vapor lock can help you address the issue before it leads to more severe damage. So, look for these common signs:

Engine Stalling: The engine may suddenly stall while driving, especially at lower speeds or when idling.
Difficulty Restarting: After the engine stalls, it may be difficult or impossible to restart until it cools down.
Loss of Power: You may notice a significant loss of power or hesitation when accelerating.

Preventing Vapor Lock

Takes steps to reduce the factors that contribute to fuel vaporization with these practical tips:

Maintain Your Fuel System: Regular maintenance of your vehicle‘s fuel system, including fuel lines, fuel pump, and fuel filter, can help ensure proper fuel pressure and flow.
Insulate Fuel Lines: Use heat-resistant materials to insulate fuel lines, especially those near hot engine components. Because this can help keep the fuel cooler and less likely to vaporize.
Use High-Quality Fuel: Opt for high-quality fuel with lower volatility, especially during the summer months. Because, this can reduce the risk of fuel vaporization.
Avoid Prolonged Idling: Prolonged idling can cause the engine and fuel system to heat up, increasing the risk of vapor lock. So, turn off the engine if you expect to be stationary for an extended period.
Check Fuel Line Routing: Ensure that fuel lines are routed away from heat sources. And if necessary, reroute them to minimize exposure to high temperatures.
Install an Electric Fuel Pump: An electric fuel pump can help maintain consistent fuel pressure, reducing the likelihood of vapor lock. And this is especially useful for older vehicles with mechanical fuel pumps.

Dealing with Vapor Lock

If you suspect your vehicle is experiencing vapor lock, here are some immediate steps you can take:

Cool Down the Engine: If possible, let the engine cool down before attempting to restart it. Because, this can help the fuel return to a liquid state.
Open the Hood: Opening the hood can help dissipate heat more quickly and reduce the temperature in the engine compartment.
Use Starter Fluid: In some cases, using a small amount of starter fluid can help the engine start. But this should be done with caution and as a last resort.

Don’t Let Our Extreme Wichita Summer Heat Damage Your Vehicle.

By understanding and preventing vapor lock you can help avoid unexpected breakdowns. So, take proactive measures and keep your car running smoothly even in the hottest weather. But if you do run into problems, the experts at Tracy’s Tire Pros are always here to help.

Tracy’s Tire Pros can help you take the best care for your vehicle. And they have three locations for your convenience: West Maple Street auto care and auto repair, East First Street N. and West 21st Street N. Furthermore, Tracy’s Automotive is a proud dealer for Jasper Engines and Vogue Performance Exhaust systems.

Tracy's Automotive Tire Pros

See Full Bio