Fuel pumps in fuel injected vehicles are mounted inside the gas tank. It’s a major job to replace it and these pumps are expensive. So before you replace one, you better do your homework. I’ve seen too many DIY mechanics make the assumption that their engine running problems are due to a bad pump. Several hundred dollars later, they still have the same problem.
If your diagnostics lead you to believe you have a fuel pump problem, here’s the proper way to check out the pump. First, perform a fuel pressure test. You’ll need a fuel pressure gauge and the adapters to fit your vehicle. Some auto parts stores rent this test gear. You’ll also need the specs for your vehicle. Check out a printed or online shop manual for those. Continue reading ‘Testing a Fuel Pump’ »