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check for burned out glow plugs

ANSWER 2

What year model do you have? Does it start if you plug in the block heater? There is a computer update from Ford that can be installed to improve cold starting problems.

answer3

Most likely your truck has a block heater and you have to turn the ignition on to start the heater up. its that hissing- buzzing sound you hear whe you first turn the ignition on when its cold, that's why the motor emblem on the dashboard is red

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โˆ™ 2011-09-13 22:06:12
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Q: Why does a Ford F-250 Diesel not start when it is cold?
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