Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Thanks SD for bringing me here.
2006 f150 PO171
Found intake leak repaired
New plugs,injectors still high fuel trims
O2 .600 on both s1’s
Maf .665 idle and up to 1.7vdc at 2500rpm
What engine is in it? What are fuel trims at idle, 1500 rpm, 2500 rpm? Have you smoke tested intake (look around metal tube coming out of upper intake at egr/dpfe valve the metal flange part if its bowed it will leak there or at diaphragm for dpfe.
