Q: I ve noticed my car is starting to lose power when I accelerate hard. A friend told me it might be the fuel pump and I should check the fuel pressure. I did this years ago on my pickup that had a ...

Your car's engine needs a very specific diet of air and fuel to do its job, and it's the fuel pressure regulator's (FPR) job to feed it the right amount. The gadget is relatively tiny and can fit in ...