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Ford F150 running lean


initzero

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I have a 2004 F150 5.4 that has 2 lean codes, bank1 and bank2. The long trim fuel is 20% plus 8-10% on short term fuel trim at idle.When I bring the RPM up to 1500 the fuel trim go down to about 10% long term. The fuel pressure is 40PSI at idle. I have used a smoke machine to look for a vacuum leak but was not able to find one. There is also a code for intake runner stuck closed. I'm running out of ideas.

Any thoughts?

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