Chapter 12- What Charlie Sees That the Scanner Cannot

Charlie Buskirk runs a mobile diesel service out of a one ton truck with a welded steel bed, works alone, and had by this point taken about four hundred dollars off Emmett across three separate call outs without ever telling him to buy anything.

She had a rule about pre purchase inspections that she stated on the first phone call and repeated every time. She would not give an opinion on price. She would tell him what was worn, what was broken, what was legal, and what it would cost to put right, and the arithmetic after that was his problem. Emmett has since said that this was worth more than any discount, because it meant every number she gave him was a number he could take to a seller without arguing about whose side she was on.

This chapter exists because a scanner tells you about the parts of a truck that have a computer attached to them, and roughly half of what makes a Class 8 truck expensive does not.

The Half With No Wires

On the Cascadia at Bellwether, which Emmett had already scanned and found excellent, Charlie spent ninety minutes and found five thousand seven hundred dollars of work that no diagnostic tool on earth would have reported.

Steer tires at six thirty seconds of tread. Legal, and close enough to the limit that they would need replacing before winter. Drive tires better but mismatched across an axle, which is its own problem for wear. Brake linings on two axles down to the point where she would not have signed off an inspection on them within a few months. A fifth wheel with enough fore and aft play in the locking jaws that she put a bar in it and had Emmett watch the movement himself. An air leak she found by shutting the engine off and listening, which turned out to be a gladhand seal and a cracked line at a bracket. And an annual federal inspection due in seven weeks.

None of that produces a fault code. None of it is in the engine computer, because none of those components report to it.

Four of the largest cost centres on a used truck, none of which appear on any diagnostic screen.

Charlie's own summary of the division was blunt and Emmett wrote it down. She said the computer knows what the engine has been doing. It does not know what the truck has been sitting in, what it has been hit by, or what somebody has drilled through.

The Frame

The single most valuable thing she did that morning cost nothing and took four minutes.

She went under the truck with a light and looked along both frame rails. On the passenger side, near a suspension hanger, she found two holes that had been drilled through the web of the rail, filled with bolts holding a bracket for equipment that was no longer fitted.

Drilling a frame rail is not automatically a disaster, and there are places on a rail where a manufacturer permits it. There are also places where it is specifically prohibited, because a frame rail carries its load in a way that makes a hole in the wrong place a stress riser and a crack years later. She could not tell Emmett which category these fell into without the manufacturer's frame drilling specification, and that is exactly what she told him.

That is the honest version of an inspection finding. Not a verdict. A question that now has to be answered before money changes hands, by somebody with the manufacturer's own documentation in front of them.

Charlie's list on the Cascadia, priced at local labour rates, on a truck that had scanned perfectly.

Why the Two Halves Need Each Other

Emmett arrived at a division of labour over those weeks that he has used ever since, and it is the practical answer to the question of what a scanner is actually for.

The scanner is a filter and it is nearly free to run. It costs twenty minutes and no money, it works on the first visit, it needs no appointment, and it eliminates trucks before anybody has spent anything. Six of the eight trucks in this book were eliminated by the scanner alone, and not one of those six ever needed a mechanic's time.

The inspection is a verdict and it is not free. Charlie charged between one hundred and forty and two hundred and twenty dollars depending on distance, plus her time if a road test was involved. Paying that on eight trucks would have been sixteen hundred dollars Emmett did not have.

So the order matters more than either tool. Scan first, because it is cheap and it kills most candidates. Inspect second, on the survivors only, because it is expensive and it is the only thing that can see the half of the truck with no wires in it.

Charlie put it in one sentence in the yard at Bellwether, with her hands still black, and it is the sentence Emmett repeats to anybody who asks him how to buy a truck. She said the scanner tells you which trucks are worth paying me to look at.

What She Would Not Do

Two things she declined, and both are worth a reader knowing before they hire somebody.

She would not put a value on any truck. Not once, not even when Emmett pushed. Her position was that a mechanic who prices trucks ends up selling trucks, and she was not going to be the person who told a man to spend sixty four thousand dollars.

And she would not clear a code on a truck her client did not own, for any reason, including the entirely innocent reason of confirming whether a fault came straight back. She told Emmett that the moment she touched the memory on somebody else's vehicle, every finding she had made that day became arguable, and so did her name.

That is the same rule Leo Menchaca gave him in Chapter two, arrived at independently by somebody who had never met Leo. Emmett noticed that, and it is the reason he never once tested it.

What It Cost and What It Saved

The arithmetic of hiring Charlie is worth setting out plainly, because a first time buyer counting every dollar will be tempted to skip it and buy on the scan alone.

Emmett paid her four times across the search. Three inspections at between one hundred and forty and two hundred and twenty dollars, plus one longer trip to Kansas City at three hundred and forty including her road time. Eight hundred and eighty dollars in total.

Against that, on the Cascadia alone she found five thousand seven hundred dollars of work on a truck that had passed every diagnostic check he knew how to run, and she found it in ninety minutes before he had made an offer. On the Volvo she confirmed that a slow air build was a thirty dollar valve rather than a compressor, which was the difference between an ask he could make with confidence and an ask he would have been guessing at.

The mistake to avoid...

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