Rough idle and bad mileage – anyone done a proper fuel system diagnosis here?
My 2014 Ford Explorer has been idling rough at stoplights and my fuel economy dropped by about 20% over the last couple months, even after a new air filter and spark plugs. I'm starting to think the injectors might be clogged or maybe the fuel pressure regulator is acting up. I don't want to just throw injector cleaner in the tank and hope for the best – I'd rather get a real car fuel system diagnostic and injector service dubai done by someone who can actually measure pressure and flow. Found Royal Prince Auto Care while looking for injector replacement in Dubai, but I'm wondering if they do the full diagnosis first or just recommend replacement right away. Has anyone here had a similar rough idle issue that turned out to be a dirty injector or a failing pump? Also curious what a diagnostic like that typically costs before I commit. Really hoping to avoid the dealer on this one.