new intake issues

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Aug 26, 2014 | 12:06 PM

ohiosteve

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new intake issues

02 f150 with 5.4- new dorman intake installed now runs like crap. Lean bank one, cyl 1 misfire. Ran fine before new intake. Help!!

Aug 26, 2014 | 12:27 PM

Tasca Ford Parts

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Did you replace the intake gaskets?

Aug 26, 2014 | 12:32 PM

ohiosteve

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Yes ,they came already installed on new manifold

Aug 26, 2014 | 12:50 PM

Backnblack_66

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From: Spring, TX

Quote:

Originally Posted by ohiosteve

Yes ,they came already installed on new manifold

Have you checked for vacuum leaks?

Aug 26, 2014 | 01:09 PM

ohiosteve

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I sprayed some brake clean around intake didn't notice much of a difference in idle,will try some propane.Didn't change the injector orings or the hats on the bottom of injectors

Last edited by ohiosteve; Aug 26, 2014 at 01:11 PM. Reason: forgot info

Sep 12, 2014 | 11:22 PM

2000FordStyle

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From: Durham NC USA

Did you put the o ring on the orfice tube at the back of the intake? These are known for the 0 ring to be just laying in the box and creates a small vacuum leak. May want to check that too.