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Hope somebody can give me some direction. Here is my problem. FACTS : Running stock 5.0 EFI(MAS AIR), new plugs, wire, cap rotor, New EGR and O2 sensors, Timing correctly set at 10 BTD getting spark at distributor , Vaccum pressure staedy at 14 psi. Engine is running really rich,rough and doesnt seem to have full power. Doesn't seem like its burning all the gas. Checked the OIL and the oil smells like fuel.

Does anyone have any suggestions on what might be the problem?
 

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Here are my 2 guesses.
1 - fuel pressure regulator, if the diaphram ruptures, the vacuum line will suck gas, making everything rich, and maybe letting some slip past the rings. Check by pulling the vacuum line and there will be gas in it if its broken.

2 - A messed up fuel injector that is continuously firing. I dont know how to check this, but a post a few down talks about it.

Good Luck
 
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