5.0L Ford Mustang 5.0L discussion area for heads, rebuilding, tuning, idle issues and all other modifications and performance parts.

Changed intake, issues with starting

Old 06-10-2019, 08:45 PM
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Join Date: Jun 2019
Location: Oxford County
Posts: 1
Changed intake, issues with starting

Hi guys and gals
Just changed my 87 5.0 intake from stock to explorer gt40. Ported to 70mm. New bbk 70mm spacer and tb. New fuel pressure regulator. Injectors professionally cleaned and new orings and caps. When I go to start her, it runs rough for couple seconds then dies. I have to pump pedal to get her to go. But won’t stay running. I dont feel there are any vacuum leaks and I am getting fuel to at least the schrader valve. Any ideas? I have a video I will try to download if possible. I am not forum savvy!
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