Bad Gas Mileage After Maintenance

zooch7 · 07-03-2017, 11:51 AM

Hey guys, so I cleaned my valves, did new plugs ans coilpacks, replaced low pressure fuel sensor, and redid my vacuum lines. Car runs great but mileage has gone down quit a bit. 1/4 gets me about 99miles on the freeway doing 74ish. Now mileage on dash says im getting 30 to 32 but it seems off to me. When I filled up on town i watched the needle move 1 tick and I only had gone 10 miles. Any ideas or am I just over worrying? Now I love my smiles per gallon, but I havnet put my foot into it really yet. Thanks for your time guys.

Mhd stage 1 plus fmic, dci. Only mods done so far.

zooch7 · 07-03-2017, 02:47 PM

bump

Varjo · 07-03-2017, 03:46 PM

Quote:

Originally Posted by zooch7

Hey guys, so I cleaned my valves, did new plugs ans coilpacks, replaced low pressure fuel sensor, and redid my vacuum lines. Car runs great but mileage has gone down quit a bit. 1/4 gets me about 99miles on the freeway doing 74ish. Now mileage on dash says im getting 30 to 32 but it seems off to me. When I filled up on town i watched the needle move 1 tick and I only had gone 10 miles. Any ideas or am I just over worrying? Now I love my smiles per gallon, but I havnet put my foot into it really yet. Thanks for your time guys.

Mhd stage 1 plus fmic, dci. Only mods done so far.

It's all in your head

I highly doubt the trip computer is lieing to you. Enjoy your car man, good job keeping up with maintenance, now stop looking for problems

mikeyoooooo · 07-03-2017, 04:17 PM

Quote:

Originally Posted by zooch7

Hey guys, so I cleaned my valves, did new plugs ans coilpacks, replaced low pressure fuel sensor, and redid my vacuum lines. Car runs great but mileage has gone down quit a bit. 1/4 gets me about 99miles on the freeway doing 74ish. Now mileage on dash says im getting 30 to 32 but it seems off to me. When I filled up on town i watched the needle move 1 tick and I only had gone 10 miles. Any ideas or am I just over worrying? Now I love my smiles per gallon, but I havnet put my foot into it really yet. Thanks for your time guys.

Mhd stage 1 plus fmic, dci. Only mods done so far.

100 miles per 1/4 tank sounds normal to me. That's about what my car gets when cruising on the highway. That's around 26-27mpg.

zooch7 · 07-03-2017, 06:11 PM

Well thanks for the info guys!!! Makes me feel a little better. My first major DIY on the car.

07-03-2017, 11:51 AM	#1
zooch7 Private First Class 22 Rep 100 Posts Drives: 08 335i Join Date: Jun 2016 Location: Eugene, OR iTrader: (0)	Bad Gas Mileage After Maintenance Hey guys, so I cleaned my valves, did new plugs ans coilpacks, replaced low pressure fuel sensor, and redid my vacuum lines. Car runs great but mileage has gone down quit a bit. 1/4 gets me about 99miles on the freeway doing 74ish. Now mileage on dash says im getting 30 to 32 but it seems off to me. When I filled up on town i watched the needle move 1 tick and I only had gone 10 miles. Any ideas or am I just over worrying? Now I love my smiles per gallon, but I havnet put my foot into it really yet. Thanks for your time guys. Mhd stage 1 plus fmic, dci. Only mods done so far.
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07-03-2017, 02:47 PM	#2
zooch7 Private First Class 22 Rep 100 Posts Drives: 08 335i Join Date: Jun 2016 Location: Eugene, OR iTrader: (0)	bump
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07-03-2017, 06:11 PM	#5
zooch7 Private First Class 22 Rep 100 Posts Drives: 08 335i Join Date: Jun 2016 Location: Eugene, OR iTrader: (0)	Well thanks for the info guys!!! Makes me feel a little better. My first major DIY on the car.
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