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.

Harley-Davidson Big Twin Gas Tanks

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Lowbrow Customs WX Split Gas Tanks - Bolt-On for 1936 - 1984 Big Twin Harley-Davidsons - 2.25 gallon
80 reviews $399.99

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

Lowbrow Customs Banded Screw-In Gas Cap for Harley-Davidson 1996 & later - Brass
34 reviews $72.59

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

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

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1996 & later - Brass
19 reviews $72.59

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

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

Cycle Standard Fat Bob Style Gas Tanks - 1948-1984 Harley-Davidson FX/FL - 3.5 Gallon
$249.95

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

Cycle Standard Pop-Up Gas Cap - Black - Vented - for Harley 1996 & later
20 reviews $38.71 $48.39

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

Bates 1/4" NPT Petcock Conversion Kit 1940-65 H-D Big Twins and 45”/750 cc Sidevalves - CAD Plated
4 reviews $56.19

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

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

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

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

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

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
9 reviews $42.34

Drag Specialties Vented Screw-In Gas Cap - Chrome - 1982-1996 Harley-Davidson
3 reviews $17.95

Lowbrow Customs Banded Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Brass
5 reviews $72.59

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

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

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

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

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

Cycle Standard 22mm Petcock Harley-Davidson Style - Chrome - Dixie - Straight Outlet
1 review $9.72 $21.99

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

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

Cycle Standard Pop-Up Gas Cap - Chrome - Vented - for Harley 1996 & later
11 reviews $33.87 $42.34

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

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

Lowbrow Customs Banded Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
10 reviews $42.34

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

Lowbrow Customs Dished Screw-In Gas Cap for Harley-Davidson 1996 & later - Brass
16 reviews $72.59

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

Colony #2702-7 Gas Tank Shut Off Rod Upper Kit 1940-1965 Harley-Davidson Big Twin/45s - Chrome Plated
$27.50

Colony #3574-1 Gas Tank Rubber Divider 1939-1979 Harley-Davidson Big Twins
$14.52

Colony #3340-3 Gas Tank Fitting Kit 1949 Harley-Davidson Big Twins - CAD Plated
$21.27

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Aluminum
2 reviews $42.34

Lowbrow Customs Dished Screw-In Gas Cap for Harley-Davidson 1996 & later - Aluminum
4 reviews $42.34

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

Colony #9892-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twin 1972-1972 FX - CAD Plated
3 reviews $15.84

Colony #2438-5 Gas Tank Pike Nut Mounting Kit 2000-Up Harley-Davidson Softail - Chrome Plated
1 review $14.83

Colony #7801-2 Gas Tank Shut Off Operating Knob Extension 1940-65 Harley-Davidson
2 reviews $11.96

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

Colony #3718-4 Fuel Tank Rubber Grommet Kit 2000-2017 Harley-Davidson Softails
$19.00

Colony #9891-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twin 1972-1972 FX - Chrome Plated
3 reviews $17.16

Colony #3576-1 Gas Tank Rubber Divider 1936-1938 Harley-Davidson Big Twins
$16.50

Colony #3038-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twins 1971-1972 FX - Parkerized
1 review $15.84

Colony #9893-18 Gas Tank Mounting Kit 1937-1975 Harley-Davidson Big Twin 1972-1972 FX - Parkerized
3 reviews $15.84

Colony #2523-5-P Fuel Tank Smooth Button Head Mounting Kit 1988-1994 Harley-Davidson FXR - Chrome Plated
1 review $13.92

Colony #2523-5 Gas Tank Allen Mounting Kit 1988-1994 Harley-Davidson FXR - Chrome Plated
$13.22

Colony #3055-3 Gas Tank Shut Off Rod Spacer Kit 1940-1965 Harley-Davidson Big Twins/45's - CAD Plated
1 review $9.08

Colony #2524-2 Gas Tank Allen Mounting Kit Pre-1984 Harley-Davidson Big Twin - Chrome Plated
$9.05

Colony #3719-4 Fuel Tank Rubber Grommet Kit 2018-Up Harley-Davidson Softails
$20.00

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

Colony #3588-1 Gas Tank Buffer 1909-1925 Harley-Davidson All 1926-1929 F/J 1930-1936 V/VL
$9.68

Colony #3587-1 Gas Tank Buffer 1936-1947 Harley-Davidson Knucklehead 1937-48 U Models
$17.60

Drag Specialties Fat Bob Style Gas Tanks - 1948-84 Harley-Davidson FX/FL - 5 Gallon
$239.95

Drag Specialties Fat Bob Style Gas Tanks - 1984-99 Harley-Davidson FXST/FLST 1985-86 FX/FXWG - 5 Gallon
$259.95

Colony #3543-6 Gas Tank Name Plate Gaskets 1940-1946 Harley-Davidsons
$15.68

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

Colony #3337-3 Gas Tank Fitting Kit 1964 Harley-Davidson Big Twins - CAD Plated
$21.27

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

Lowbrow Customs Domed Screw-In Gas Cap for Harley-Davidson 1982-1995 / Modern Triumph Bonneville T100 / T120, Scrambler, Thruxton - Brass
8 reviews $72.59

Colony #2530-6-P Fuel Tank Mounting Smooth Allen Kit 1985-1986 Harley-Davidson FXWG/FXST/FXSB/FXEF - Chrome Plated
$19.61

Colony #2528-10-P Gas Tank Mounting Smooth Allen Kit 1990-1995 Harley-Davidson Softail - Chrome Plated
$21.51

Colony #2524-2-P Fuel Tank Smooth Mounting Kit Pre-1984 Harley-Davidson Big Twins - Chrome Plated
1 review $10.44

Cycle Standard Reproduction Long Skirted Eaton Style Bayonet / Cam Style Vented Gas Cap - Chrome
23 reviews $29.27

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