Question about 2000 Harley Davidson FLSTC Heritage Softail Classic

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Crankcase breather I have 1998 softail, currently i am running a crankcase breather out the bottom of the crankcase. i am seeing oil on the floor that is dripping off the breather as expected. Does anyone know how to prevent the issue or am i stuck with it?

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If the bike sits for a while, and then you run it and shut it off, it will drip.. run it more often.

Posted on Apr 28, 2010

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Why is engine oil blowing out of breather after oil change


That's common if there's too much oil in the crankcase. You may want to re-check the data you have on how much oil the crankcase is supposed to hold.

It can also happen if there's too much blow-by from cracked rings, a punctured piston, or a badly scored cylinder wall. It can even happen if the valves are badly out of adjustment. But if the engine is running smoothly, it's unlikely to be any of these.

Mar 04, 2015 | 2002 Harley Davidson FXSTS Springer...

1 Answer

2 lines running from the cylinder head into air intake is spitting fluids


Running into the AIR INTAKE, or the AIR FILTER/CARB MOUTH?

If the latter, it's the lines for the crankcase ventilation breather, and quite common for it to carry a little oil mist.

Apr 02, 2014 | 2000 Harley Davidson FLSTC Heritage...

2 Answers

91Harley FLH, OIL pouring out of breather tube . Whats problem?


Has the bike been sitting for a while? If so, I may have "sumped". This means that oil from the oil tank flowed past the check ball in the oil pump and flowed into the bottom of the crankcase. If the oil level is low, there is a good chance this is what happened. Only way to get the oil out of the crankcase is to run the bike until all the oil is pumped out thru the breather. Place a pan under the breather hose to catch the oil. Eieset way to solve this problem in the future is to place a clamp on the feel line that goes from the oil tank to the pump. Don't run the bike with the clamp in place! Hope this helps.

Oct 01, 2012 | 2000 Harley Davidson FLSTC Heritage...

1 Answer

Crankcase breather tube


Hi Anonymous, oil leaking from your air cleaner is caused by oil carryover from the engine. For what ever reason the breather system is not seperating enough oil mist and air from the piston downstroke. There are cheap and quick easy fixes and there are more exspensive ones. Start by trying the following:
1. Run your oil level half way between the add and full mark when hot.
2. Run oil breather lines from head into a TEE fitting below carb/induction module then a single line into a mini filter under frame.
3. Purchase Arlen Ness Super Sucker.
4. Replace umbrella valves and realign oil pump
5. Upgrade oil pump and cam plate
Good luck and have nice day.

Jul 17, 2012 | Harley Davidson FLHT Electra Glide...

1 Answer

77 shovelhead w joe hunt mag and s&s oil pump everything is great except after about 20 mins of riding oil start coming out of gasket all around cam cover and mag assembly dont know what would cause...


There ae a number of things it could be. What it sounds like to me is that the oil is not being pumped back into the oil tank and is collecting in the cam chest. It should be blowing out of your crankcase breather tube as well if your crankcase breather tube is open. Behind the oil pump, there are three holes. One is behind and above the oil pump. This is where the breather tube from your oil tank and the primary comes into the engine. The hole directly behind the oil pump in the middle is the oil return line from the very back end of the primary where the oil from the primary is recirculated back into the engine. The bottom hole behind the oil pump is the crankcase breather. It should have a hose that runs back around behind the transmission and just dead ends in a bracket pointed towards the final drive chain. This hose should be open to vent the crankcase pressure. Have you checked to see if oil is being pumped back into the oil tank? If not, the scavenge gears of the oil pump may not be pumping the oil out of the engine and back to the tank. If this is the problem, you may not have the drive key properly installed in the scavenge gears of the oil pump. Still, oil should be pouring out of the crankcase breather hole. But, this is what it sounds like it's doing to me. The oil is building up in the cam chest for some reason.

Good Luck
steve

Sep 06, 2011 | Harley Davidson FXDWGI Dyna Wide Glide...

1 Answer

Harley said i have a wet clutch added oil they recommended through derby cover now oil comming out of breather tube??? don't want to ruin anything shut it off and started searching on line ...only got...


Your 04 Electra Glide does indeed have a wet clutch. Your primary case holds between 36 - 42 ounces of oil. Stand the bike straight up. Remove the derby cover from the primary cover. The oil level should be just up to the bottom edge of the outer clutch shell, the shiny aluminum ring. Do not over fill as the clutch will drag and you will not be able to get the transmission into neutral with the engine running. Now you said that you have oil coming out of the breather tube. What breather tube? The transmission has a breather tube but that's the only one. Your engine's crankcase breathers are located in the heads and exhausts the crankcase pressure into the air filter. This is required by the EPA. After a while, oil mist will build up in the air cleaner cover and begin to drip out. You have to clean this out from time to time. Your transmission holds 20-24 ounces of oil and you fill it through the chrome end cap on the transmission on the right hand side of the bike. There is a plug that takes a large hex key or Allen wrench to remove. It has a dipstick on it. With the bike standing straight up, the oil level should be between the two lines.

Good Luck
Steve

Aug 06, 2011 | 2004 Harley Davidson FLHT - FLHTI Electra...

1 Answer

Oil system manual for a 1987 softail (evolution). oil leaking from breather of engine system.


On your '87 Softail, the engine breather vent is behind and below the oil pump. The air from the breather is routed into the engine air filter by a metal pipe and rubber tubing that runs from the breather vent to the air filter. It is common to get a bit of oil in the air filter because of this system. The system was designed to meet EPA regulations of the time. Since then, the breather system has been modified to allow the engine to breathe at the top of the heads instead of down low on the engine. This resolves some of the problem with oil getting into the air filter but it still does not eliminate it. The only way to eliminate the oil from getting into the air filter is to reroute the air from the crankcase breather vent to somewhere else. Most people just let it exhaust underneath the bike by putting a small breather filter on the end of a short piece of rubber hose connected to the breather vent.

Good Luck
Steve

Apr 01, 2011 | Harley Davidson FXST Softail Standard...

1 Answer

Oil leak


Rick, since 1994, Harley has used what we call a "head breather" system in that the crankcase breathers are located in the heads. This was done in an effort to reduce the amount of oil that gets into the air filter. In earlier case breather model engines, the oil would pour into the air filter if the bike had been sitting for a few months. Prior to that, the bike would "puke" what looked like a quart of oil on the ground below the bike when first started after a long period of sitting.

If you'll remove the air filter cover and element, you'll see that the large bolts that hold the breather onto the heads are hollow. Inside the rocker boxes, there are small rubber "umbrellas" that are opened and closed by crankcase pressure. These are designed to allow your engine to breathe without an excess of oil being blown out. Still even though this system is better, a little oil still gets into the air filter. You can either keep this cleaned out or you can replace the "head breather" systems with an aftermarket system that changes the location the system exhaust crankcase pressure from. Also, you can change the "umbrella" seal and put in new ones. It isn't that difficult to do on the front head. The rear head can be tricky since there isn't much room to get to the bolts to take the rocker box cover off. The umbrella seals are located in the center section of the rocker box cover.

Good Luck
Steve

Jun 02, 2010 | 2005 Harley Davidson FLSTC - FLSTCI...

1 Answer

My 95 xr600r dirt bike leaks oil


This hose should be connected to the air filter box.

It's for ventilation of the crankcase, much like the PCV (Positive Crankcase Ventilation) in cars. As the bike runs, the crankcase gets hot enough to vaporize some of the oil. And since there's always at least a little bit of combustion blowby in the cylinders, you get a bit of fuel/air thrown into the mix and an oil/fuel/air "atmosphere" in the crankcase, which isn't an ideal situation. So, when the hose is connected to the air filter box, it slightly vacuums off this atmosphere, letting the engine burn it and expel it through the exhaust.

If it's not connected to the airbox, the vapors can condense back to oil and just drip out.

If a lot of oil is coming out ("a lot" is hard to quantify), you could be getting excessive blowby because of a broken ring or cracked piston.

Hook that breather line back up to the airbox and unless the bike smokes excessively, I wouldn't worry about it.

If it IS hooked up, it or the airbox is cracked and needs fixing/replacing. If the breather line has somehow become plugged (mud-daubers are amazing at finding holes to makes homes out of), the pressure buildup could have split your vent line.

May 11, 2010 | 1995 Honda XR 600 R

1 Answer

89 Harley FLTCU oil coming from the crankcase breather tube and


This is an age old problem for the Harley engine. In you 89 model, the crankcase breaths from behind the oil pump through a tube that runs to the backside of the air filter assembly. Most people that I know, simply remove the tube coming up to the air filter and block the hole in the air filter assembly backing plate. At the breather, they run a short hose to just behind the transmission and cut it off there. This is similar to the earlier Shovelhead engine and the way it breathes. In 1994, Harley went to the "head breather system" which was better but it still gets oil into the air filter assembly.

There is one thing I saw on the aftermarket assessories market once called a "CatchCan". The breather tube ran to it and it seperated the oil from the air and the held it in a small container to be emptied on a regular basis. I have never used one nor have I ever seen one so all I can tell you is what the book said. Matter of fact, I cannot remember where I saw it now. Custom Chorme catalog, maybe. Good Luck, Steve

Apr 30, 2010 | 2000 Harley Davidson FLHTCUI Electra Glide...

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