SIGNS OF A FAILING FUEL PRESSURE REGULATOR AND HOW TO CHECK IF IT'S BAD

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Signs of a fuel pressure regulator and how to check if it's bad.

Check the fuel pressure regulator by removing the vacuum line. If fuel is present, replace FPR. Also, if you smell gas in the fuel line, replace it.

A bad fuel pressure regulator will affect fuel pressure. It can cause a rich condition (black smoke coming out of the tail pipe), a lean condition, poor gas mileage, poor engine performance (misfire), hard start (long crank time), no start, weak acceleration, etc...

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