I bumped this old post because it helped me a lot and I have a few comments. I had a strong smell of unburned fuel in the garage after parking, and fuel fumes were coming from the crankcase vent when I opened it up. Following the advice given above, I replaced the fuel pump and the smell is now gone. (Yes, I will change the oil soon.)

I found it quite difficult to get to the bolts for the fuel pump. To get to the rear one, I had to reach down through the plug wires, but for the front one I had to reach up from below, next to the K-member. In both cases I couldn't get a socket on, so I had to use a box wrench, 1/12 turn at a time. Olaf's comment about turning the engine to release pressure on the fuel pump spring was very helpful here, but in order to get the motor to turn, I had to overtighten the alternator belt and the power steering belt, and lean on the power steering pulley with one hand while turning the fan with the other. Otherwise the fan would slip without turning the engine. There was no way I could keep a hand on the fuel pump while turning the engine.

Next time remove all six spark plugs, this prevents compression from building as you roll over the engine by hand, and the task becomes very easy.

Easy way to tell if fuel pump is on back side of cam, in other words no force being exerted by cam on pump's arm is to loosen bolts a bit securing it, and watch it relax when cam is rotated. Once pump lever is not being depressed, pump will be easy to move in and out while bolts are backed off. Then fully remove bolts. Hint: you may need to break seal of pump's gasket so it can slide or move on bolts.

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

rich006, glad to be of help!
I have a Dodge Aspen, so there may be issues regarding room to turn the bolts on other models, I'm sorry I didn't mention that in the original post.

Next time you are in a wrecking yard, pick up the center bolt in the crank pulley from a Mopar V8. It fits the slantsix crank snout as well, and is a great help when you need to turn your engine.

Olaf

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Aspenized