Starting to notice smell of fuel

[RAMAIRIII]

I have been smelling diesel inside my truck for a couple of days but can't find any leaks. Has anyone else had this happen and point me in the right direction? 2005 F350 CC SB King


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[twoicebergs]

When was the last time you fuelled up? Did you bring something into the cabin that has diesel on it?

From the engine side, try wiping near and around the fuel filter/pressure regulator/banjo bolts. Then do the same back through the valley and the rear of the heads. Also check the lines around the HFCM.

[southend]

Check out the left side near the front right of the head, there are two mechanical connections there. Also check out around the fuel filter housing, and the front of both heads, where the banjo bolts tie in.

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[sinner6.0L]

definitely look around the secondary housing. any of the fuel line connections or the regulator cover have the potential to leak

also look around the up-pipes for exhaust leaks which can be mistaken for fuel smell

[dhanna6powerstroke]

I vote for up pipe flex joint.

[RAMAIRIII]

Sry forgot to mention that the only time I smell it is when I drive it and then stop at my destination. That's the only time it happens is when I stop and let it cool down and shut it down. I also have an RCD egr delete. So no flex pipe. Should have mentioned that in my original post.


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[04cr450]

you should smell a little bit of diesel exhaust fumes when stopping... Its a diesel.. is it raw diesel fumes or diesel exhaust fumes?

[twoicebergs]

Based on what you are saying, it is probably nothing to worry about. It could be just the wind/parking direction, fuel cap, or even a slight fuel weep gassing off as the motor and exhaust cools. Are you parking inside a garage that is now typically closed?

[LiftedStroker05]

i had this as well but i had a few fuel problems at the time. but i found the smell was coming from the fuel pressure regulator on the side of the fuel filter up top. the gaskets go flat and tend to leak. instead on just getting a new gasket, i went ahead and did the blue spring update (adds 10-15psi through fuel lines IIRC) mine was leaking and smelled bad inside and outside the cab. hope this helps!

[dhanna6powerstroke]

You still have a flex joint even with the delete. It's on the y-pipe that you connected the solid delete pipe to.