Electronic fuel injection radically changed the automotive landscape – with the wholesale adoption of multi-point fuel injection systems over the last 20 years, cars have become more powerful, more reliable, cleaner, and more fuel-efficient than their carbureted predecessors could have ever been. And while the heart of EFI, the common fuel injector, is a very simple piece of hardware capable of clicking away literally millions of times over its lifespan, things can and do go wrong. Bad gas, electrical or mechanical failure, and leaking seals can all rob performance and cause problems for even these very durable little solenoid valves.

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