1 Answer
The fuel system pressure in a 1989 Ford F-150 should be between 55-62 psi while the fuel pump is operating.
Read more: http://www.ehow.com/how_6789441_check-pressure-psi-1989-f_150.html#ixzz2mYcV6C51
| 11 years ago. Rating: 3 | |
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