Why Does The Heavy Vehicle Struggle To Start In Hot Weather?

Hi, I'm Bob, a truck driver from Texas. I drive a heavy-duty Kenworth T680. Lately, with the summer heat, it's been having trouble starting up. It's fine in cooler weather, and I've maintained it well, but this heat seems to be causing issues. Can someone explain why my heavy vehicle struggles to start in hot weather? I'd appreciate any advice!
Solved By Zoe Cheng

Solved By Zoe Cheng

Zoe Cheng is an expert in the diesel engine and parts. The company Sennoparts is officially authorized by DEUTZ and VOLVO to sell and service original diesel and machinery parts. We also sell high quality replacement parts and offer remote repair assistance service. Our company exports to over 30 countries worldwide and we have partners in Kenya, Philippines and Uganda among others.

Hi Bob,

Your Kenworth T680’s difficulty starting in hot weather could be due to the increased air density in the heat affecting your fuel system. It might also be due to your battery performance, which can decline in extreme temperatures.

Regular maintenance is key, but you may also want to consider having a mechanic inspect your truck’s fuel and electrical systems to identify any issues that could be exacerbated by the heat.

Stay safe on the road!

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