It smells like it is running rich. Could it be the fuel pressure regulator. I've changed plugs and wires. not sure which way to go from here.
Chevrolet Q&AAsk Your Question
2002 Chevrolet Silverado 2500 HD Question: The past 2 weeks my truck has been getting very poor gas mileage.
Answer #1pushrod December 12, 2013, 12:09Master
Have it scanned with a real scanner, not a code reader and fuel system pressure checked.
Answer #2Greg's Orange Auto (11925 Answers) , Orange, CA - (714) 361-9386globalhelper December 12, 2013, 13:00Master
you might want to get a mech opinion if your not equipped to handle suggested tests
Replypushrod, December 12, 2013, 13:02Master
'HAVE' it scanned!