How far can a Harley go on a tank of gas?

Harley-Davidson motorcycles typically get 40-50 miles per gallon, which is a good reference point for how far you can ride based on the capacity of your gas tank. Sportsters tend to be smaller and get more miles per gallon, while large Touring bikes or Trikes are heavier and are on the lower range of miles per gallon.

What are the parts of fuel system?

Many new bikes are fuel injected, and have a computer to control the amount of gas fed to the engine. There is a fuel pump that provides fuel to the throttle body, which feeds the gasoline to the engine. Older bikes are carbureted, which is a simple system. Gas tends to be gravity fed from a gas tank to the carburetor and the amount of gas delivered to the engine depends on the size of the carburetor jets that are installed. The carburetor is tuned by changing the jets, which have different size orifices, which meters the amount of gasoline delivered to the engine.

Why is my motorcycle leaking gas?

If your motorcycle is leaking gas take a close look to see where the leak is originating. Common problems would include a leaky fuel valve (petcock), damaged fuel line, or if the fuel is coming from the carburetor, a stuck float. A leaky fuel valve or damaged fuel line can be replaced, while a stuck carburetor float can typically be fixed. The carburetor may just need some taps on the float bowl with the handle of a screwdriver to free the stuck float. If that doesn't work, make sure the fuel valve is off, remove the float bowl and check for grit or any debris that could be causing the float needle to not completely seat, which would allow gas to continue flowing into the float bowl even when it is full.

Zodiac Gas Tanks

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Top view Frisco mount Sportster Gas Tank by Lowbrow Customs — Lowbrow Customs Frisco Mount Sportster Gas Tank - Standard Width - 2.5 gallon
92 reviews $189.99

Lowbrow Customs Frisco Mount Sportster Gas Tank - Narrow - 2.1 gallon
59 reviews $199.99

Cycle Standard Harley-Davidson Ironhead Sportster 1958 - 1978 Replica Stock Style Gas Tank - 2.4 gallon
52 reviews $178.41

Lowbrow Customs Frisco Mount Sportster Gas Tank - Standard Width - Bayonet Filler - 2.5 gallon
12 reviews $189.99

Cycle Standard Stock Style Harley Sportster Gas Tank 1986 - 2003 - Left Side Petcock - 2.2 gallon
68 reviews $191.49

Lowbrow Customs Frisco Mount Sportster Gas Tank - Super Narrow - 1.6 gallon
31 reviews $199.99

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Chrome
51 reviews $15.96

Lowbrow Customs Frisco Mount 2007-2022 EFI Sportster Gas Tank - Standard Width - 2.5 gallon
$199.99

Cycle Standard Custom Small Flush Mount Pop-Up Gas Cap and Weld In Bung
57 reviews $78.64

Cycle Standard Stock Style Harley King Sportster Gas Tank 1995 - 2003 - Left Side Petcock - 2.9 gallon
13 reviews $164.99

Cycle Standard Custom Flush Mount Aluminum Pop-Up Gas Cap and Weld In Bung
23 reviews $78.64

Cycle Standard Blackbird Legacy Gas Tank for 1982 - 2003 Harley-Davidson Sportsters - 3.5 gallon
13 reviews $299.99

Lowbrow Customs Banana Gas Tank - Deep Tunnel - 1.8 gallon
8 reviews $149.99

Cycle Standard Pop-Up Gas Cap - Black - Vented - for Harley 1996 & later
18 reviews $48.39

Cycle Standard Narrow Ribbed Mustang Gas Tank 2.25 gallon
29 reviews $175.99

Cycle Standard Axed Chopper Motorcycle Gas Tank 2.2 gallon
33 reviews $164.99

Cycle Standard 3/8 inch NPT Petcock Straight Outlet
27 reviews $33.26

Cycle Standard Blackbird Legacy Gas Tank for 2007-2022 EFI Harley-Davidson Sportsters - 3.5 gallon
17 reviews $299.99

Lowbrow Customs Ovate Axed Gas Tank - Super Narrow - 1.6 gallon
10 reviews $174.99

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1996 & up - Chrome
34 reviews $21.29

Cycle Standard 22mm Petcock Round Body Chrome Harley-Davidson Style - Left Side Position
17 reviews $58.55

Cycle Standard Custom Flush Mount Chrome Pop-Up Gas Cap and Weld In Bung
5 reviews $78.64

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Left Hand Outlet
27 reviews $30.60

Cycle Standard Mustang Gas Tank - Single Filler - 3.3 Gallon
3 reviews $175.99

Cycle Standard Mustang Gas Tank - Dual Filler - 3.3 Gallon
$175.99

Cycle Standard 1/4 inch NPT Petcock Black - Straight
5 reviews $25.29

Cycle Standard Pop-Up Gas Cap Large Diameter - Chrome - Vented - for Harley 1996 & later
8 reviews $20.60 $39.59

Cycle Standard Pop-Up Gas Cap Large Diameter - Black - Vented - 1996 - Up Harley-Davidson
15 reviews $26.92 $39.59

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Right Hand Outlet
17 reviews $30.60

Lowbrow Customs Frisco Mount Banana Gas Tank - Bayonet Filler - Shallow Tunnel
2 reviews $149.99

Lowbrow Customs Super Banana Gas Tank - Mid Tunnel - 2.6 Gallon
14 reviews $149.99

Cycle Standard Screw-In Harley Stock Style Vented Gas Cap - 1996 & up - Black
61 reviews $17.59

Cycle Standard Pop-Up Gas Cap - Chrome - Vented - for Harley 1996 & later
11 reviews $42.34

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Straight Outlet
24 reviews $27.94

Cycle Standard 1/4 inch NPT Petcock Chrome - Straight
23 reviews $30.60

British Standard 1/4 inch BSP Petcock Fuel Valve - Reserve - For Triumph BSA Norton
16 reviews $19.95

Cycle Standard Custom Flush Mount Polished Stainless Steel Pop-Up Gas Cap and Weld In Bung
7 reviews $84.69

Lowbrow Customs Reproduction Harley Model 125 / Model 165 / Hummer Gas Tank with Key Switch
3 reviews $249.99

Cycle Standard Laredo Gas Tank - Center Filler
$239.99

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Left Hand Outlet
20 reviews $30.60

British Standard 1/4 inch BSP Petcock Fuel Valve - Main - No Reserve - For Triumph BSA Norton
15 reviews $19.95

Cycle Standard 3/8 inch NPT Petcock 90 Degree Outlet
19 reviews $30.60

Cycle Standard Laredo Ribbed Gas Tank - Offset Filler
3 reviews $219.99

Lowbrow Customs Finned Thread-In Gas Cap for Harley-Davidson 1996 & later - Polished
26 reviews $42.34

Cycle Standard 22mm Petcock Harley-Davidson Style - Black - Right Hand Outlet
13 reviews $30.60

Cycle Standard 1/4 inch NPT Petcock Chrome - 90 Degree
24 reviews $30.60

Lowbrow Customs Frisco Mount Sportster Gas Tank - Narrow - Bayonet Filler - 2.1 gallon
6 reviews $189.99

Cycle Standard Stock Style Harley King Sportster Gas Tank 1986 - 1994 - Right Side Petcock - 2.9 gallon
5 reviews $175.99

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Polished
35 reviews $42.34

Cycle Standard Axed Dual Cap Chopper Motorcycle Gas Tank 2.2 gallon
26 reviews $164.99

Cycle Standard Screw-in Style Gas Cap Gasket replaces Harley-Davidson OEM #61109-85
22 reviews $3.00

Cycle Standard Bayonet / Cam Harley Style Vented 2" Gas Cap - Black
29 reviews $14.63

Cycle Standard 22mm Petcock Round Body Solid Brass Harley-Davidson Style - Left Side Position
14 reviews $58.55

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Chrome
10 reviews $29.27

Lowbrow Customs Ignition Switch Kit for 1948-59 Harley model 125 / 165 Hummer Gas Tanks
1 review $49.45

Lowbrow Customs Finned Screw-In Gas Cap for Harley-Davidson 1996 & later - Black
12 reviews $21.28 $38.49

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Straight Outlet
17 reviews $30.60

Cycle Standard Pop-Up Gas Cap Large Diameter - Chrome - Dummy - for Harley 1996 & later
2 reviews $12.44 $31.89

Cycle Standard Pop-Up Gas Cap Large Diameter - Black - Dummy - 1996 - Up Harley-Davidson
1 review $34.73

Cycle Standard 1/4 inch NPT Petcock Black - 90 Degree
8 reviews $30.60

Cycle Standard Rubber Knee Pads for Blackbird Legacy and Blackbird Legacy Slimline Gas Tanks
8 reviews $15.21 $38.99

Cycle Standard Domed Slim Chrome Screw-In Harley Style Gas Cap 1996 & up
15 reviews $21.77

Cycle Standard Pop-Up Gas Cap - Black - Non-Vented - for Harley 1996 & later
2 reviews $16.30 $41.79

Cycle Standard Bayonet / Cam Harley Style Non-Vented 2" Gas Cap - Black
1 review $10.22 $24.19

Cycle Standard Bayonet / Cam Harley Style Vented 2.5" Gas Cap - Gloss Black
6 reviews $26.35

Lowbrow Customs Competition Screw-In Gas Cap for Harley-Davidson 1996 & later - Black
29 reviews $42.34

Cycle Standard Bayonet / Cam Harley Style Non-Vented 2" Gas Cap - Chrome
$10.88

Cycle Standard Domed Slim Black Screw-In Harley Style Gas Cap 1996 & up
43 reviews $21.77

Cycle Standard Bayonet / Cam Harley Style Non-Vented 2.5" Gas Cap - Black
1 review $12.03 $24.19

Cycle Standard Dresser Style Screw-In Harley Style Vented Gas Cap - 1992 & Up - Black
$17.29

Cycle Standard EFI To 22mm Gas Tank Petcock Adapter - 2007-Up Harley-Davidson XL
6 reviews $86.50

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