

Not only do these sleeves prevent vapor lock, but they also protect the engine lines themselves from heat damage. Heatshield Products Thermaflect Sleeve is an effective automotive heat barrier to protect exposed steel and rubber fuel lines in an engine compartment from ambient heat that would cause the fuel inside the lines to reach a high enough temperature to cause vapor lock. And, if you have a show vehicle and need heat protection without compromising the restored look, the Thermaflect Sleeve can be removed! A roll of Thermaflect Sleeve can be cut to various lengths, so different sections of fuel lines can easily be protected. Our engine heat shield sleeves have a built-in, high-temp hook-and-loop fastener system which prevents needing to remove fuel lines and makes installation a breeze. For carb-equipped vehicles, one of the easiest solutions to preventing vapor lock is to use a thermal-barrier sleeve on the lines such as a Thermaflect Sleeve from Heatshield Products. The solution? Protect your fuel lines from getting hot.

Vapor lock typically happens during summer months when high ambient temps, combined with the heat of a vehicle’s engine and exhaust, is transferred to the fuel lines. The result is fuel starvation causing the engine to run rough or completely stall. Fuel pumps are designed to pump liquid, not air, and the increased pressure inside the fuel lines keeps the fuel pump from being able to keep the fuel moving. Vapor lock happens when the temperature of fuel gets high enough to transform liquid into a vapor state. But, proper use of thermal barriers is helpful in preventing vapor lock, no matter how hot the day gets. If you’re a racer, it can put the car on the trailer well before you’re ready to leave the track. Whether you have a carburetor or use fuel-injection in your vehicle, vapor lock can bring your vehicle to a standstill causing hours of frustration.
Signs of vapor lock how to#
If you’re wondering how to prevent vapor lock, try using a thermal barrier like a heat shield, or heat sleeve. How To Prevent Vapor Lock Using Thermal Barriers
