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> MPG change, where to start looking?
914Bryan
post Feb 10 2013, 08:23 AM
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I know this isn't an exciting high performance question, but a question just the same.

I'm having an issue with the mileage my 74 2.0 DJet and am wondering where to start looking for the problem. I commute 60 miles each way to work (120 total). My driving is 98% freeway, non rush hours so a steady 75 mph, motor is turning 3200.

I could always count on 32mpg, day in, day out. Over the last two months, it has slipped to 28mpg. I burn a tank a week, so this has been about 8 tanks of gas that I have noticed this.

Engine is running fine, no change in performance.

Would a tardy valve adjustment cause this? I'm a little over 6k since my last one.

Any ideas?
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914Bryan   MPG change, where to start looking?   Feb 10 2013, 08:23 AM
jonvo4591   I was in an autotive training class last week and ...   Feb 10 2013, 08:43 AM
JamesM   I was in an autotive training class last week and...   Feb 10 2013, 10:20 AM
somd914   Have you noticed any other issues with the engine?...   Feb 10 2013, 09:31 AM
rick 918-S   Fuel was my thought also. There is no good reason ...   Feb 10 2013, 09:37 AM
tscrihfield   Fuel was my thought also. There is no good reason...   Feb 10 2013, 09:54 AM
3d914   Ditto on the points. And when you check them, don...   Feb 10 2013, 10:04 AM
Cupomeat   With everyone else's advice, I'd go over t...   Feb 10 2013, 10:22 AM
Vacca Rabite   Now, strangely my audi 1.8t motor seems to give ...   Feb 10 2013, 10:33 AM
Cupomeat   Now, strangely my audi 1.8t motor seems to give...   Feb 10 2013, 10:34 AM
6freak   Now, strangely my audi 1.8t motor seems to give...   Feb 11 2013, 11:16 AM
rick 918-S   Fast check for the points is ignition timing will ...   Feb 10 2013, 10:39 AM
Tom_T   I know this isn't an exciting high performanc...   Feb 10 2013, 01:33 PM
Dave_Darling   It is normal for your fuel economy to suffer when ...   Feb 10 2013, 02:53 PM
bulitt   Rear brakes dragging?   Feb 10 2013, 03:06 PM
bandjoey   IS THERE A WAY to test the gasoline to see the alc...   Feb 10 2013, 07:53 PM
Vacca Rabite   sure. run to flaps and get some test kits. they ...   Feb 10 2013, 08:03 PM
914Bryan   Thanks everyone, this is all great advice! Mos...   Feb 10 2013, 08:09 PM
euro911   Having the same issue with my Toyota trucks. Been ...   Feb 10 2013, 08:21 PM
Katmanken   Winter gas mix has more aromatic volatiles in the ...   Feb 10 2013, 08:52 PM
jonvo4591   To do a down and drity alcohol content test, you...   Feb 10 2013, 09:34 PM
r_towle   our Prius gets almost 60mpg in the summer. In the ...   Feb 11 2013, 10:23 AM


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