how much fuel a 1600 engine consumes?

[TResistance]

Hello friends.

This question is basic...

 

Does anyone know how much fuel a 1600 engine consumes? miles / gallon or kilometers / liters.

 

I'm playing with the settings, since at one time was consuming 0.26 gallons for 3 miles.

 

But right now I have paid attention to tire pressure, ignition time (BTDC) and gaps.

 

Today, I did a test and walked 6 miles for 0.26 gallons.

 

It can be better. I know. My engine is stock, with some type improvements: Coil, spark plug wires, high flow filter and little btdc.

 

thanks a lot.

[datzenmike]

Also depends on the car it's in and it's weight, highway or city or a mix of both, level or mountainous and your gallon size. US, liters or Imperial. 

 

I assume a 710? All I can say is my 710 with L20B (2000cc) and 5 speed was about 29 MPG on a 2 thousand mile trip. That's US gallons. Imperial gallons was 33/34?

[banzai510(hainz)]

maybe float to high or choke is still on will cause bad gas milage

[datzenmike]

Yeah .26 is almost 1/3 gallon. You should get almost 8-10 miles out of that.

[TResistance]

Yeah .26 is almost 1/3 gallon. You should get almost 8-10 miles out of that.

 

Thank you, datzenmike.

 

Yup, is a Datsun 710 with 1600 cc and 4 speeds. I used 4 days to week principaly into the city. 

The Mexico's City, It is at a height of 2,250 metres above sea level.

[TResistance]

maybe float to high or choke is still on will cause bad gas milage

 

Thank you, banzai510(hainz).

 

-choke- I suppose, but a month ago, it did not ignite by carburetor and it was cleaned, but I'll check it.

[banzai510(hainz)]

If this car was from sealevel and you bought it and it now get bad gasmilage I guess  it jetteing needs to be changed.

have you cked you timming also.?

[TResistance]

If this car was from sealevel and you bought it and it now get bad gasmilage I guess  it jetteing needs to be changed.

have you cked you timming also.?

 

Nope, the car has always been of city.

Recently I worked with timing, and get a double increase a millage.

 

The next option is: verify a choke.

 

and optionaly calibrate the valves.

[banzai510(hainz)]

Im not a carb jetting expert but if car is upper altitude aI THINK YOU WANT THE LEAN OUT THE FUEL JETS. Make smaller number

[TResistance]

Im not a carb jetting expert but if car is upper altitude aI THINK YOU WANT THE LEAN OUT THE FUEL JETS. Make smaller number

 

The altitude is the same since I buying the car, (more than less 10 years), but, 3 months for today increase the consume of fuel and try with screw to the mixture to reduce a consumer.

[datzenmike]

The mixture screw only adjusts idle... has no effect on regular driving mileage. 2,250 meters is huge. That's 7,000 feet. If the car was bought for high altitude use it may be ok

 

My 710 is from Nevada where the average altitude is 5,000 feet. It had a #97 primary jet in it and it ran alright. I live literally at sea level and tried a #112 and performance and mileage increased! If you are at 7,000 feet I would expect a primary jet in the high #90s.

[john510]

Yeah .26 is almost 1/3 gallon. You should get almost 8-10 miles out of that.

Wouldn't .26 be a lot closer to 1/4 of a gallon ?  how could it be possible to get a 1600 cc motor to get 12 MPG ? unless you had dual Mikunis or Webers.

[Dawa]

might've already been mentioned but its all about how heavy your foot is, and what gears you drive in/what rpm you operate at.

 

slow take offs from lights, riding around in higher gear (as long as youre not going up hills or don't NEED to accelerate) etc will help you increase your mileage per tank.

[datzenmike]

Wouldn't .26 be a lot closer to 1/4 of a gallon ?  how could it be possible to get a 1600 cc motor to get 12 MPG ? unless you had dual Mikunis or Webers.

 

You're right, I rounded up.

 

So 24 MPG isn't that bad, though low.  Altitude and driving style and driving in the city could easily explain this then.

[racerx]

24 is not bad for carburated. Back on the days, if you got 20mpg I were all that since American big v8 cars prolly got 12 mpg.

[TResistance]

The mixture screw only adjusts idle... has no effect on regular driving mileage. 2,250 meters is huge. That's 7,000 feet. If the car was bought for high altitude use it may be ok

 

My 710 is from Nevada where the average altitude is 5,000 feet. It had a #97 primary jet in it and it ran alright. I live literally at sea level and tried a #112 and performance and mileage increased! If you are at 7,000 feet I would expect a primary jet in the high #90s.

 

Thanks, datzenmike.

I check the primary jet and I think that number is wrong. He have 60 and 70. I will try to buy the number what do you say to comparate.

[TResistance]

Wouldn't .26 be a lot closer to 1/4 of a gallon ?  how could it be possible to get a 1600 cc motor to get 12 MPG ? unless you had dual Mikunis or Webers.

 

thank you, john 510, No, i don't have a dual Mikunis or Weber's. Is a stock carburetor. Is a Nikki.

When i see a fuel is a decreasing drastically, i was think it some is wrong. I decided to ask

[TResistance]

might've already been mentioned but its all about how heavy your foot is, and what gears you drive in/what rpm you operate at.

 

slow take offs from lights, riding around in higher gear (as long as youre not going up hills or don't NEED to accelerate) etc will help you increase your mileage per tank.

 

Thank, Dawa

Yes, i know it. The conditions of driving change, but when i try a driving slow, the fuel is down dramatically, in other ways I drive a 37 mph. And in 2 days an 1/4 of tank is gone. The carburator is stock. I think something is wrong. A one year ago an 1/4 of tank last a 2 weeks.

[banzai510(hainz)]

I had a Fiat in Germany after I blow up my Ford Capri.

My gas milage was horrible. Find out I had a tiny rust hole half way in tank, DUH!!!!!!!!! Was embarrassing

 

 

you ck your oil? Does it smell like gas? maybe the fuel pump diaphrame is bad. Sucking gas in to the oil also

[DanielC]

"how could it be possible to get a 1600 cc motor to get 12 MPG ? "
I used to tow a two horse trailer with a 521, in the 1970's. I live near Portland, Oregon, and went to many horse shows requiring travel in the Columbia gorge. 

On one trip back down the gorge, the wind was blowing up the gorge.  I spent a good part of the time in the gorge, in second gear, at 5,000 RPM, almost wide open throttle, very definitely into the secondary barrel of the carb. 

The basically stock 521 got 11 MPG in that stretch of freeway.  Basically stock means 2' exhaust pipe, and roadster clutch.

[TResistance]

I had a Fiat in Germany after I blow up my Ford Capri.

My gas milage was horrible. Find out I had a tiny rust hole half way in tank, DUH!!!!!!!!! Was embarrassing

 

 

you ck your oil? Does it smell like gas? maybe the fuel pump diaphrame is bad. Sucking gas in to the oil also

 

Thanks banzai510(hainz).

I'll check what do you say. Maybe a fuel pump is a problem.

[Dawa]

! my thoughts exactly. I think there might be a leak in your fuel system somewhere. start at fill hose, then tank, then lines to filter, lines/hoses from there to carb.

[TResistance]

"how could it be possible to get a 1600 cc motor to get 12 MPG ? "

I used to tow a two horse trailer with a 521, in the 1970's. I live near Portland, Oregon, and went to many horse shows requiring travel in the Columbia gorge. 

On one trip back down the gorge, the wind was blowing up the gorge.  I spent a good part of the time in the gorge, in second gear, at 5,000 RPM, almost wide open throttle, very definitely into the secondary barrel of the carb. 

The basically stock 521 got 11 MPG in that stretch of freeway.  Basically stock means 2' exhaust pipe, and roadster clutch.

 

Thank you, DanielC.

I think that is possible. When I carry a repair at carburator I tolt to specialist what the consume is very high, he don't believe and I show 13 registers of tank fully and the odometer.

He say: His car consumes at like a big v8.

 

In Mexico, the datsun are popularly called "donkeys" because they cover large kilometers with so little.

 

But, 12MPG is a joke.

[banzai510(hainz)]

They called then Donkeys in Afganistan also then the Toyota Hilux tookover

[TResistance]

! my thoughts exactly. I think there might be a leak in your fuel system somewhere. start at fill hose, then tank, then lines to filter, lines/hoses from there to carb.

 

Dawa, Thanks.

Once upon into the car smelling gasoline and remplacement a hose and it was the solution. I'll check.