I am getting very bad fuel milage when i fill up 65 liters, I get about 300 km and its right empty. I have new plugs and air filter. What else could I do, and about how many km should i get out of 65 litres which is about 17 gals.
Thanks!

 

Is a 1988 ranger 2.9 EFI 93 000 km

 

I am no good with km conversions so I will give you the info I have in MPG and gallons. My truck is an 88' 2.3L EFI w/ 115,000 miles, so the mileage will be a little better than the 2.9L. When I fill up (17 gallon tank takes 15-16 gallons, there is always about 1-2 gallons left so you just go by the amount need to fill) I can go about 350-400 miles driving mostly city roads and only a little highway. I would think that you should get atleast 17-20 MPG.

Places to look to recover some lost MPG are: plugs, wires, cap, rotor, PCV, coil, filters, cleaning all the sensors.... MAF, IAC, EGR, o2 (usually just replace). I found ALOT of junk in my intake track. IE - TB, EGR, entire manifold. The difference in MPG and performance was night and day after I cleaned this all out. My truck has a 2 part manifold and I didn't un-bolt the lower manifold but I sprayed alot of cleaner down it to just burn off during start-up. All this cleaning and parts replacement resulted in more than a 7+ MPG gain.

Other things you might not think of looking to gain MPG is changing the fluid in the trans, and the differentials.

 

Wel Laker, the mpg your getting is in round numbers, about 18.5 mpg.

Which isn't outrageously low for the 3.0L, if most of your driving is in town, if it's a highway figure, then that can be improved upon IMHO.

Is your's a manual or auto tranny????

Have you modified the drive train any, like changing the rear end ratio, or using different size than stock tires, like wider or larger or smaller diameter???

If you live in cold country, then a synthetic crank case & running gear lube will likely help.

Will they pay for themselves, is another question, depending on how much you pay for them & if you can do the changes yourself.

If you live where fuel & lubricant prices are high & do the fluid changes yourself, then the payback time will be quicker.

In my own case, just changing the crankcase lube to a synthetic has given me 1.8-2.2 more summer highway mpg's, don't know about winter yet.

It didn't seem to make a noticeable summer city driving, mpg difference though, again I don't yet know about the city, winter mpg.

I like Wraith's clean er up suggestions though, that and a switch to all synthetic lubes, along with driving style changes will likely yield positive results for you IMHO.

Also do some MPG tests, or in your case Km/Liter consumpion tests with different fuels. Try, say, 5 tanks of each brand of fuel available in your area, to see which give you the best distance traveled per unit of fuel consumed & the best driveablity.

You may discover, the least costly fuel per liter, may not turn out to be the best deal overall.

Even if the cost's even out, with the more costly fuel, if it's giving you better Km/L & better driveability, then your putting fewer deposits into the engine & lubricating oil, both a big plus, over time!!!!

 

Yeah, that is rather poor. I have a 97 2wd 3.0 auto and on the last trip I got 30 mpg (IMP, that would be 25 US). I haven't really checked in town and combined but it shouldn't be a whole lot less. Probably tuning it up and giving it a thorough cleaning would be good advice to follow.