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Unpopular opinion: throwing parts at a no start is smarter than chasing wires first
Last Wednesday I had a 2012 Freightliner Cascadia in the bay that cranked but would not fire, and my lead tech wanted to spend two days buzzing out the harness with a meter. I pulled the fuel filter instead and it was black slime from a bad batch of diesel a customer bought at a station off I-80 near Joliet. Swapped the filter and primed it and the truck fired on the third crank, whole thing took 40 minutes. I know everybody says diagnose before you swap, but on these common rail motors a clogged filter looks exactly like a sensor fault. Anyone else skip the meter and grab the filter first on a crank no start?
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dylanwilliams1d ago
Ever see a guy pull a starter before checking the ground strap? Same energy...
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