1988 Gas tank schooling please
Thread Starter
|
Cruiser
Joined: Dec 2009
Posts: 135
Likes: 7
From: Whitby Ontario
1988 Gas tank schooling please
Hi Guys,
Ok I have a 88 FLSTC I have the 2 tank set up. I understand that I have the cross over tube going from the Right tank to the left. When I bought the bike the side with the ON,OFF RES tank is full the other side (right)
Does not have much gas in it. Am i missing something is one a reserve does the right side of the tank empty first and the left side that is full is the reserve. Hence I need to fill the right side . Im a little confused .
Ok I have a 88 FLSTC I have the 2 tank set up. I understand that I have the cross over tube going from the Right tank to the left. When I bought the bike the side with the ON,OFF RES tank is full the other side (right)
Does not have much gas in it. Am i missing something is one a reserve does the right side of the tank empty first and the left side that is full is the reserve. Hence I need to fill the right side . Im a little confused .
Stellar HDF Member
Joined: Jan 2013
Posts: 3,466
Likes: 425
From: Illinois
Dual tanks with a crossover acts as a single tank.It has more gas in the left tank because it's been leaning over on the kickstand. The on/reserve/off is a function of the petcock. 'On' is running gas through a taller tube than 'reserve'.
Seasoned HDF Member
Joined: Jun 2010
Posts: 9,332
Likes: 3,873
From: Upstate New York
Even though the tanks are connected, you still have to fill both tanks. If you fill only one tank, it takes so long for the level in both tanks to equalize through the tiny quarter-inch crossover line that you won't get both tanks full if you fill only one.
The way I do it is to fill the right tank first right to the top, cap it off then remove the left cap and fill the left tank to an inch below the neck. That was the way an old-timer told me to fill that tanks and it's worked for me for 25 years.
The way I do it is to fill the right tank first right to the top, cap it off then remove the left cap and fill the left tank to an inch below the neck. That was the way an old-timer told me to fill that tanks and it's worked for me for 25 years.
Exactly. The crossover will equalize very slowly, If you only fill one side, don't expect to ride a long ways before the next stop.
Club Member
Joined: Sep 2010
Posts: 15,435
Likes: 7,127
From: Beyond Fucital
When you fill up you fill both sides, left side first then the right side while watching the left so it doesn't overflow
Being the 2 tanks are connected the gas will seek to be level,so the left will have more gas when on the jiffy stand.
There's also a crossover tube on top for air displacement.
The left side (the side with the petcock) has a non vented gas cap, only the right side cap is vented.
This is so when the bike's parked if the fuel expands from being over a hot engine or parked in the sun it doesn't overflow.
Being the 2 tanks are connected the gas will seek to be level,so the left will have more gas when on the jiffy stand.
There's also a crossover tube on top for air displacement.
The left side (the side with the petcock) has a non vented gas cap, only the right side cap is vented.
This is so when the bike's parked if the fuel expands from being over a hot engine or parked in the sun it doesn't overflow.
Seasoned HDF Member
Joined: May 2008
Posts: 21,173
Likes: 12,740
From: South Carolina
Trending Topics
Thread Starter
|
Cruiser
Joined: Dec 2009
Posts: 135
Likes: 7
From: Whitby Ontario
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Club Member
Joined: Sep 2010
Posts: 15,435
Likes: 7,127
From: Beyond Fucital
If you've been riding the bike and it hasn't stalled it's vented somewhere.
If it weren't it would get vacuum bound and gas would stop flowing.
Thread
Thread Starter
Forum
Replies
Last Post
ersee36
Ignition/Tuner/ECM/Fuel Injection
18
May 1, 2024 06:01 PM