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-   -   New 4.2 v6 problems (http://www.f150forum.com/f12/new-4-2-v6-problems-267890/)

Shaymus1968 07-27-2014 12:43 PM

New 4.2 v6 problems
 
Put new motor in , went to start and it has backfiring through the exaust. Does any one know how I can resolve this?:help:

Stroked93 07-27-2014 07:19 PM

Plug wires are on it wrong or timing chain installed incorrectly.

Stroked93 07-27-2014 07:19 PM

Could be Mass airflow sensor also make sure it's plugged in.


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