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Got schooled on injector timing by an old timer at the Boise truck show
I was helping a buddy set up our booth and this guy with a 'Detroit Diesel' hat just starts pointing at our display engine. He said, 'Your static timing is fine, but you're ignoring the pump's advance curve under load.' He pulled out a worn notebook from 1998 showing graphs he'd drawn by hand, tracking how a 2-degree shift at 1800 RPM could burn 5% less fuel. I never even thought to check that on a road call. Now I carry a portable scope to verify the dynamic timing, not just the static mark. Anyone else run into this on the newer common rail stuff, or is it more of an old mechanical pump thing?
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linda_murphy1mo agoProlific Poster
Why overcomplicate a simple static check?
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the_james1mo ago
Wait, you call that simple?
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