Fink

I have a few questions I need answers to:

1. Kind of a rotten egg, just over all bad smell coming from truck. Not all the time, only certain times. Clogged cat? Bad 02 sensor?

2. ~10.7-11.2 MPG(city), ran fuel system cleaner through, ECT on some of the time. Clogged injectors? Bad 02 sensor causing this as well? Bad cat maybe also?

3. Is it just my lead foot and ECT causing the bad MPG?

4. Could a bad AFM be causing all of this?

HELP!! I am really hoping I can do something about my MPG cause it is killing me...I only got 172 miles on a tank this past time...that is horrible. My Dad's 3/4 ton Chevy gets better than that!

Fink

kps36

All indications say your cat has gone south. Now would be the time to get a free-flow Cat and change out the O2 sensor while you are there.

$RUNNER

are you running stock sized tires?