on Tuesday 27 November 2007 08:35 pm, someone posing as dan baker took a
rock and etched into the cave:
> i get really bad mpg on my 02 blazer 4.3 lt i get 12 i town and maybe 19
> hwy any ideas why i get such bad mpg i only have a 13 gal tank it has
> been tuned and it doesn't seem to help?
Heatwave has a good point.
However, is this different than you're used to? If so there may be several
areas to review.
1. EGR Valve. Sometimes this sticks in the open position and causes
inappropriate fuel delivery.
2. EGR screen. I think there's a screen that may collect stuff if you have
bad injectors (see item #3) that clogs up in the same area as the EGR
valve.
3. Fuel injectors. Check these. They can become clogged.
4. O2 sensors. Check the two sensors as they may be sending the computer
commands for more fuel than is needed.
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