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Diesels are known for their reliability and toughness. They even have issues sometimes too.

  • Fuel contamination can happen when water or debris gets into the fuel system. This can cause significant problems, including:
  • In cold weather, water in the fuel can freeze and clog fuel lines.
  • Corrosion: Water can corrode fuel system components.
  • Poor Combustion: Contaminated fuel can lead to incomplete combustion and poor engine performance.
  • A clogged fuel filter can restrict fuel flow to the engine, preventing it from starting.
  • Ensure you have enough fuel in the tank.
  • Glow Plug Issues:
  • Glow plugs are responsible for preheating the combustion chamber to ignite the fuel. If one or more glow plugs are faulty, the engine may not start, especially in cold weather.
  • The glow plug relay controls the flow of electricity to the glow plugs. A faulty relay can prevent the glow plugs from functioning correctly.
  • Air in the Fuel System: Air in the fuel lines can disrupt fuel flow and prevent the engine from starting.
  • Fuel filter replacement
  • Fuel system repairs
  • Long periods of disuse
  • Low Compression: Low compression in one or more cylinders can prevent the engine from starting.


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Happy Adventures,

Heather


By jhautoinc January 30, 2026
These are vital to keep you safe on the road.
By jhautoinc January 27, 2026
Your engine will thank you.
By jhautoinc January 23, 2026
They help keep your engine cool.
By jhautoinc January 20, 2026
They need maintenance to keep them running.
By jhautoinc January 17, 2026
It's better for your engine. 
By jhautoinc January 13, 2026
They are more important than you know.
By jhautoinc January 10, 2026
A spark plug gap can cause a misfire.
By Bobby Poist January 7, 2026
They're important to keep you safe on the road.
By jhautoinc January 3, 2026
It's more often than you think.
By jhautoinc December 31, 2025
Batteries really don't like cold weather