 MPG varies, mileage varying good and bad |
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| 86motoman |
 May 7 2005, 04:24 PM
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#1
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Member  Group: Members Posts: 200 Joined: 13-May 04 From: Walla Walla, WA Member No.: 2,064  |
Some weeks I can drive 4 days a tank. My odometer doesn't work. Other weeks I can drive 8 days on a tank. My mileage per week does not vary that much.
Things I am considering that may affect it: - Electrical; the lights have been off more sense spring is here. - Maybe the fuel injection works better with the correct amount of juice? - Maybe the alternator is causing more drag? - Cold weather is going away. - Some other lurking variable? Does anybody else have this problem? |
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| TravisNeff |
May 7 2005, 04:38 PM
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#2
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region 
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DJET, LJET or carbs?
If it is DJET maybe your MPS is on it's last legs. Check brad anders page for testing procedures. |
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| 86motoman |
May 7 2005, 04:47 PM
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#3
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Member Group: Members Posts: 200 Joined: 13-May 04 From: Walla Walla, WA Member No.: 2,064 |
It is a '72 914. That is d-jet right? No carbs
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| p914 |
May 7 2005, 07:13 PM
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#4
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Senior Member Group: Members Posts: 518 Joined: 7-September 03 From: Sunny South Florida Member No.: 1,117 Region Association: None |
When is the last time you adjusted your valves?
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| dmenche914 |
May 8 2005, 04:52 PM
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#5
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Senior Member Group: Members Posts: 1,212 Joined: 27-February 03 From: California Member No.: 366 |
faulty head temp sensor can give poor mileage also. sounds kind of extreme, 4 days driving verses 8, 2:1 ratio!
About how many miles driven per day? figure a 15 gallon tank, and you dhould be able to get a mileage reading. |
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