When you first notice that your semi truck isn’t firing up as smoothly as usual, it’s best to consult the mechanic. Otherwise, the underlying problem may soon worsen and prevent your truck from starting whatsoever, leaving you stranded and behind schedule. At Bob’s Road Service, our mobile semi truck mechanics are experts at identifying and fixing issues that cause no-start in semi trucks. Here’s a look at five common reasons that semi trucks won’t start up.
In semi-trucks, with their heavy-duty electrical systems, battery problems are a leading cause of starting failures. Whether due to a drained battery or corrosion on terminals hindering the flow of electricity, a semi-truck's engine may fail to start until the battery is revived or replaced.
The starter motor kickstarts the entire engine process. However, as the miles add up, it's prone to wear and tear. A malfunctioning starter motor can manifest as a clicking sound when the ignition key is turned, indicating it's struggling to engage. Without the starter's swift rotation, the engine is liable to remain unable to fire up.
A semi-truck's fuel system is intricate, spanning from the fuel tank to the injectors. Issues such as clogged fuel filters or a faulty fuel pump can impede the delivery of fuel to the engine, stalling its ignition attempts.
Beyond the physical act of cranking the engine, a complex sequence of events occurs within the ignition system to initiate combustion. Faulty spark plugs, damaged ignition coils, or a malfunctioning ignition switch can disrupt this process, rendering the engine incapable of firing up. Ignition system issues often present as sputtering or intermittent starting problems.
In today's semi-trucks, electronic components play a major role in functionality. They control various systems crucial for operation. However, this also means susceptibility to problems within the wiring, sensors, or control modules. Shorts, frayed wires, or corroded connectors can lead to sporadic starting issues, requiring pinpoint diagnosis to identify and fix.
When you need mobile semi truck repair in the Cayuga, IN and Danville, IN areas, contact Bob’s Road Service at
(765) 709-9910. We offer a variety of mobile big rig repair services to get you back on the road ASAP!
Primary Service Areas
Cayuga, IN, Covington, IN, Rockville, IN, Lebanon, IN, Veedersburg, IN, Georgetown, IL, Danville, IL & Champaign, IL
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