Excessive Exhaust Emissions Or Odors

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Hombre, and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.

Check fuel pressure.
Check ignition timing.
Check charcoal canister for fuel saturation.
Check PCV system operation.
Check for faulty spark plugs.
Check for lead contamination of catalytic converter.
Ensure the installed PROM is correct for that particular vehicle. Check with dealer for latest application information.
Check for improperly installed fuel filler cap.
Check EGR valve operation.
Check cooling system operation.
Check cooling fan for proper operation.
Check for vacuum leaks.
Check for faulty fuel injectors and connections.
Check for carbon build-up in cylinders.
Check for engine mechanical problems.
Check for use of excessive fuel additives.
Check for excessive exhaust emissions.