Onboard diagnostics were becoming widespread, and as the mid-1990s approached, few manufacturers made any attempt to sell carbureted engines at all. A Basic Isuzu Pickup That Outlived An Entire Technology1989-1994 Isuzu Pickup side Bring a TrailerIsuzu had been selling small trucks in the US marketplace since the 1970s, both under its own name and badged for other brands. Independent mechanics could handle carbureted engines without specialist tools, and diagnosing a flat spot didn't require plugging into a diagnostic port. The Isuzu Pickup was never destined for historical significance — it was just another modest four-cylinder from a simpler era. But the answer to this particular piece of automotive trivia was always likely to involve a plain, anonymous pickup truck.