# Decreasing gas mileage **URL:** \ **Category:** Power/Fuel\ **Tags:** fuel-economy, gasoline\ **Created:** [April 27, 2008, 6:26pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351 "2008-04-27T18:26:29Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![tkamsal](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tkamsal](https://community.cartalk.com/u/tkamsal)\ **Post date:** [April 27, 2008, 6:26pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/1 "2008-04-27T18:26:29Z")
I have a Ford Ranger Ext. cab,4 dr. 4L, 6 cyl, 4 wheel drive, automatic, that recently has begun to burn more gas. On normal city driving I would get about 16 mpg. Now getting about 10-12. No check engine light on and Actron gauge results in no “codes.” NOt burning oil. Any ideas? ---
**Author:** ![Xebadaih](https://avatars.discourse-cdn.com/v4/letter/x/d07c76/32.png) [@Xebadaih](https://community.cartalk.com/u/Xebadaih)\ **Post date:** [April 27, 2008, 6:35pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/2 "2008-04-27T18:35:05Z")
Time for a tune up perhaps. Check your tire pressure. Check your air filter. Does anyone else drive the truck that might have a lead foot? And just for kicks and giggles maybe run an injector cleaner through a tank or two of gas, Techron or B13 Chemtool are two good choices. Verify your mileage at multiple fill ups. ---
**Author:** ![westnlas](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/westnlas/32/754_2.png) [@westnlas](https://community.cartalk.com/u/westnlas)\ **Post date:** [April 27, 2008, 8:11pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/3 "2008-04-27T20:11:44Z")
I have a Ranger 3.0 V 6 also. I think you need to change the air filter and spark plugs. I get 16-19 city and 24 hwy with the automatic transmission. There is something definitely wrong I think. ---
**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\ **Post date:** [April 27, 2008, 9:24pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/4 "2008-04-27T21:24:26Z")
Check your fuel pressure. The ODB-II system doesn’t check the fuel pressure. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [April 28, 2008, 11:18am UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/5 "2008-04-28T11:18:37Z")
How recently? Did it start decreasing last fall? How many miles/years? ---
**Author:** ![Skipper](https://avatars.discourse-cdn.com/v4/letter/s/839c29/32.png) [@Skipper](https://community.cartalk.com/u/Skipper)\ **Post date:** [April 28, 2008, 1:03pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/6 "2008-04-28T13:03:14Z")
Check your oil, see if it appears to be gaining oil. It sounds like you might have a leaking injector. Skip ---
**Author:** ![tkamsal](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tkamsal](https://community.cartalk.com/u/tkamsal)\ **Post date:** [April 28, 2008, 2:44pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/7 "2008-04-28T14:44:07Z")
It did start decreasing late last fall. The decrease has been gradual. However at this point if I drive 12-13 miles, I can see the gauge move a whole width of the needle. Never did this before. It has 2001 Ranger with 53,000 on it!! Thanks! ---
**Author:** ![tkamsal](https://avatars.discourse-cdn.com/v4/letter/t/7bcc69/32.png) [@tkamsal](https://community.cartalk.com/u/tkamsal)\ **Post date:** [April 28, 2008, 2:50pm UTC](https://community.cartalk.com/t/decreasing-gas-mileage/13351/8 "2008-04-28T14:50:40Z")
It had a tune up at 30,000. Tire pressure is OK. I will check the air filter as I have the oil changed at Jiffy lube. It should have had a new filter put in last visit. But then I read about how these places are ripping people off and decided not to return there. I’m the olny one who drives the truck. See my other comment saying I can see the gas gauge drop after only 12 miles of driving (unlike before). The Truck passed an MD emissons test just 3 months ago.