1989 f150 exl lariat

Asked by Nathan Sep 29, 2023 at 09:15 PM about the 1989 Ford F-150 XLT Lariat Standard Cab LB

Question type: Maintenance & Repair

I'm having fuel problems.  I can smell gas but
there's no leaks.  I've gone through four fuel filters
in about a month.  Is there a filter in the fuel
injector?  Dirty gas tank?  
My truck also sounds like it's knocking when idling
but when driving it you can hear it.  I posted a video
on this.

2 Answers
310,085

Gene answered about a year ago

There is a fuel strainer in the fuel tank, a main fuel filter in the frame rail, now each injector has a screen built in and it is not serviceable. If you smell fuel then you have a fuel leak, check the fuel pressure regulator, the fuel tank switching valve, the fuel vapor system.

Mark helpful
157,505

James answered about a year ago

Yes, check the vacuum hoses associated with the EVAP system. Most likely one is leaking fuel vapor and that's what you're smelling. Hope that helps! Jim

Mark helpful

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