
Originally Posted by
FordMan77
What does it smell like? Oil? Coolant (sweet smell)? Does it seem to smell after you brake/come to a stop quickly?
I'd be willing to bet that the valve covers are leaking oil (especially the front) and is being burned off by the manifolds. Look under the front valve cover where the plug wire guide is and see if it looks wet/black. If so, then the cover is leaking.
If you replace both valve covers then be sure to install new grommets as well. Fel-Pro sells a good set of gaskets/grommets for this.