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big drop in fuel milage

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New User

Nov 28, 2014, 12:26 PM

Post #1 of 3 (998 views)
big drop in fuel milage Sign In

2000 chevy blazer fuel problem Sign In
hi there iv been having a problem with not getting the rite fuel mileage ,on a full tank of gas i was getting 256 miles but now im getting like 220 down to 170 i have a 2000 chevy blazer 4.3L any idea WHAT IT COULD BE CASEY M.

Ultimate Carjunky / Moderator
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Nov 28, 2014, 12:41 PM

Post #2 of 3 (992 views)
Re: big drop in fuel milage Sign In

Check engine light on? Any drive-ability problems besides the poor fuel mileage?

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 28, 2014, 1:31 PM

Post #3 of 3 (986 views)
Re: big drop in fuel milage Sign In

Yes - listen to DS. Just some added comments on fuel consumption complaints:

It's colder out - that matters. Take MPG not miles per tank ful so you have some accuracy not just a fuel gauge.

See if the fuel is different especially ethanol %. More = less mile or MPG - always!

Any changes in driving habits as well.

Again, convert to real MPG not how far you go is my suggestion if nothing else is wrong but just this and continue to pay attention and fix or find out why if real,


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