Vacuum Hose(s)?

[Ranger4x4.0]

1998 4.0.

Scanned my computer today to see if I have any codes (cel doesn't work) and Came up with:

P0174- Fuel System Too Lean Bank 2

P0171- Fuel System Too Lean Bank 1

Says most possible reason is Faulty Vacuum Hose(s).

I had the intake gaskets replaced not too long ago so I wouldn't think it's that.

What would it be? Tia.

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[lil_Blue_Ford]

There are a lot of vacuum lines coming off the motor. Any one of them could be split or loose. Or several of them. Being it's a 98, you probably have the vacuum operated hubs too. I usually start with a visual inspection of all of the lines I can see. I've also heard of people spraying carb cleaner along the vacuum lines with the motor running and listening for a change in the idle caused by the carb cleaner being sucked in.