Mpg
Extreme HDF Member
Joined: Dec 2007
Posts: 13,402
Likes: 941
From: Illinois
Try zeroing the trip odo when you fill up then when you fill up again divide the gallons into the miles ridden then you will know the true miles per gallon.
Stating that you only get 100 miles before filling is almost meaningless.
Do you have a lifted tank? Do you fill when the low fuel light comes on?
Learn to provide information with you question that has some substantive data to come to a meaningful answer.
Stating that you only get 100 miles before filling is almost meaningless.
Do you have a lifted tank? Do you fill when the low fuel light comes on?
Learn to provide information with you question that has some substantive data to come to a meaningful answer.
Road Master
Joined: Sep 2013
Posts: 1,091
Likes: 84
From: Southern Maine / Seacoast NH
OP, other than the reduced fuel mileage, does the bike run any differently?
Someone correct me if I'm wrong here, but at 20mpg, he's using 150% of the fuel he was using at 30mpg (previous "good" mileage, which still seems low to me). If he's really burning that much extra fuel, wouldn't that produce a noticeable performance impact, being that rich?
As a comparison, my '08 Deluxe (96, stage one air cleaner, chrome werks slip ons, dealer download and vieds @ 50%) ran around 36mpg around town and 38-40 cruising. My '11 Limited (103, stage one air cleaner, V&H slip ons, dealer download) gets 38 around town and 40-42 cruising.
If performance other than fuel mileage hasn't changed, my vote goes to those who said fuel leak.
Someone correct me if I'm wrong here, but at 20mpg, he's using 150% of the fuel he was using at 30mpg (previous "good" mileage, which still seems low to me). If he's really burning that much extra fuel, wouldn't that produce a noticeable performance impact, being that rich?
As a comparison, my '08 Deluxe (96, stage one air cleaner, chrome werks slip ons, dealer download and vieds @ 50%) ran around 36mpg around town and 38-40 cruising. My '11 Limited (103, stage one air cleaner, V&H slip ons, dealer download) gets 38 around town and 40-42 cruising.
If performance other than fuel mileage hasn't changed, my vote goes to those who said fuel leak.
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Novice
Joined: Jul 2016
Posts: 15
Likes: 0
From: Willingboro, New Jersey
Thanks everyone for your help. Considering I smell gas at times during the ride I as someone else mentioned believe I have a leak. I'm dropping the bike of tomorrow and I'll keep everyone posted. Thanks again some of you have been very helpful and the rest of you have just been LOL
Elite HDF Member
Joined: Aug 2008
Posts: 4,133
Likes: 125
From: Japan
I'd like to know where to find that thread and read it so I could know just HOW a bad gas cap gasket would cause poor MPG. Fuel pouring out the top, or what??
Hoggy, I have an 08 Heritage and doing the same mpg. No mods, stock 97ci. but, I do have a custom gas cap. It doesn't have a leaky gasket... occasionally I get 32-33 mpg. Any thoughts on why we aren't 38-40 mpg?
Tourer
Joined: Jul 2012
Posts: 309
Likes: 33
From: Littleton, CO
Elite HDF Member
Joined: Aug 2008
Posts: 4,133
Likes: 125
From: Japan
Update:
Gasket on order. About $6 in Japan, so the standard U.S. price x3 for that...
Last edited by HoggyMtnBreakdown; Oct 28, 2016 at 09:33 AM.
Tourer
Joined: Jul 2012
Posts: 309
Likes: 33
From: Littleton, CO
I just went to my local dealer and they want $10 for the o ring/gasket. What part number did you order?
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Elite HDF Member
Joined: Aug 2008
Posts: 4,133
Likes: 125
From: Japan
61192-96A (fuel gauge gasket)
Should be the same for all Softails (and pretty much all models that have the gas cap and fuel gauge on either side of the tank).
Inspection of my fuel gauge gasket revealed it is broken, so ended up ordering both. They should be the same price at about 2 bucks each (in the U.S.). If your dealer is charging you any more than $5 a piece, I'd go elsewhere; unless it costs you more than $5 in gas to get to the next dealer, I reckon. I'd call around or look online.
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