A fuel pressure regulator controls the fuel’s pressure as it flows to the fuel injector. This part is important as the fuel pump delivers more fuel to the engine than it needs. The pressure regulator controls the flow amount.
A pressure regulator usually doesn’t fail without some type of warning. What kind of warnings? Good question. Here are some warning signs:
- the engine won’t work properly; the engine could stall or not turn over correctly
- a noticeable drop in fuel economy
- could smell gasoline when you let off the gas pedal as the engine is getting too much fuel ( the regulator is not working)
- the engine could backfire
- you might notice smoke or drips of gasoline coming out the tailpipe
If you notice any of these warning signs; it’s time to make an appointment for some diagnostic testing. Specialized diagnostic equipment will be used to determine the cause of your problem. A code or codes will be sent through a computerized scanner.
As always, ignoring a regulator problem may lead to costly repairs — engine damage is always a possibility the longer you wait.