i have a 07 f350 bone stock and i smell diesel fuel when i am driving and there has been a few small spots of diesel before i crank it up ive looked on the motor and cant realy see where it could be leaking from. anyone else had this problem?

 

You really need to take a good look around the fuel bowl. Was the fuel filter changed recently? This would be my first plan of attack.


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Mine was doing the same thing it was the o ring on cap. Don't take a lot of diesel fuel to make a mess and look like more than it really is. But I bet it's either the o ring or the fittings

 

just changed it about 500 miles ago ill take a look at the fuel bowl today that's what i thought it was but wasn't sure.

 

Either the o-ring for the fuel filter cap itself, OR, check the front cover on the fuel filter housing, the o-ring there leaks once in a while too.

 

O ring in the Fuel Pressure regulator. My truck just did this a few months ago.

 

My 06 is doing the same thing. I just ordered the blue spring ugrade rebuild kit from XDP so we will see how t works.