Black Exhaust Smoke

WARNING: This page is about a different car, the 1995 Dodge Pickup and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

Air in fuel system.
Poor fuel quality.
Clogged or leaking intercooler.
Restricted, blocked or leaking fuel injection or supply lines.
Incorrect timing or defective fuel injection pump.
Restricted or damaged fuel injector.
Restricted or damaged air filter.
Low manifold pressure.
Injection sequence does not correspond with firing order.
Low or uneven engine compression.