As long as the truck is moving, all's ok. At stop signs - lights, the cab fills with diesel fumes. If air is on max, (recirc) the fumes are not there.
Fumes apparently coming in air registers. Checked engine compartment for fuel leaks,etc. & found none. Replaced fuel filter O-ring - no help. Does not smell like exhaust, rather like fuel.
Any ideas?
I am having the exact same problem with my 06' F-250. Does anyone have any suggestions? [email protected]
Sounds like you have return line fuel crack on you fuel line return
just replace it or cut just anough to fit back on the return a put your clamp back on easy fix and no parts to buy
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