How does a Harley Davidson Top breathing engine work?
Top breathing engines breath, or vent, through the top breather bolts which are threaded into the heads of a Harley Davidson motor. The air inside a motor is saturated with oil. It exits through the breather bolts and into the air box where the air is filtered and the oil is captured in the air filter.
Why is oil in my air intake tube?
I found oil in my air intake tube from the the throttle body to the MAF sensor. Through some research the reason is that the engine has 2 pcv breather valves that will cause the issue due to the rear one being clogged up. Thanks! Loading…
What should I do if my engine oil keeps blowing into the air filter?
Purchase an engine flush formula from your local parts store and follow the directions. In general you will pour the formula into the oil and run the engine for a period of time. Once the engine has been flushed drain the oil and fill it with fresh engine oil. Replace the filter and see if the problem persists.
Why is oil coming out of my air cleaner?
Check out the article, Understanding Blowby in Motorcycle Engines, from MotorcycleCruiser.com. It explains why you had oil pumping out if your air cleaner assembly. The only other reason for this to happen can be from a broken oil pump or overfilling, as you mentioned. I have the same problem, and yes, my filter does need to be cleaned.
How does oil get into the air box?
There is a vent hose for the crank case that runs to the air box. When the cranks case has too much pressure it sends oil out of the vent tube and into the air box. I only noticed this because oil was leaking out of the air box onto the exhaust and cause it to burn.
Top breathing engines breath, or vent, through the top breather bolts which are threaded into the heads of a Harley Davidson motor. The air inside a motor is saturated with oil. It exits through the breather bolts and into the air box where the air is filtered and the oil is captured in the air filter.
Why is there oil in my air filter?
An oil saturated air filter or a puddle of oil in your air filter box seems like a strange occurrence by all means considering that its the last thing you would expect to find.
How does oil end up in air cleaner?
Although system details vary, one solution was to plumb the breather into the air cleaner. The fumes coming from the crankcase are then recirculated back into the engine and burnt. Here’s how the oil ends up in the air cleaner. Crankcases can only contain a given volume of air and its attendant pressure.
Where does the breather hose go on a Harley Davidson?
Routing the Breather Hose Into the Air Cleaner: Many Harley mechanics defeat one of the primary benefits of the breather kit when they route the breather hose into the air cleaner, on the inside of the air filter itself.
Can a Harley air cleaner be used as a filter?
Do not use Harley air cleaner filter oil as the element is only a paper/wire mesh. The element is sufficiently cleaned when it can be held up to a strong light source and light is uniformly visible through areas of the element. Replace the filter element if damaged or if the filter media cannot be cleaned adequately.
How much does a Harley Davidson breather kit cost?
Not only that, but we have them all in-stock and ready to ship to you today. Dennis Kirk has been the leader in the powersports industry since 1969, so you can rest assured that we have your back when it comes to bringing you the best Breather Kits for your Harley-Davidson. All orders over $89 receive Free shipping.
Where does the air breather go on a Harley Davidson?
Harley’s stock air breather set up on all their bikes vents directly to the air box. Gas is a by product of oil, and we aren’t talking about dumping a lot of it down the cylinders.
How does an air cleaner work on a Harley Davidson?
The stock air cleaner has two bolts which support it, as well as have hollow passages for oil vapor and blow-by to come through. These typically have short hoses which direct the vapor toward the mouth of the throttle body, as seen in Figure 1.
Where does the oil come from in a Harley Davidson?
Top breathing engines breath, or vent, through the top breather bolts which are threaded into the heads of a Harley Davidson motor. The air inside a motor is saturated with oil. It exits through the breather bolts and into the airbox where the air is filtered and the oil is captured in the air filter.
Why is oil dripping from my Harley air cleaner?
Same problem on a 2012 ultra.tried running low oil didn’t work just junk harley internal parts. Don’t blow out with compressed air! You will ruin the element. Shake the filter and them let it air dry. Phooey… As long as it’s not high pressure, keep it to 10-15 psi, it’s fine.
What does it mean when your crankcase breather is blowing oil?
If your crankcase breather is passing oil, chances are that something’s wrong (Okay, we know something’s wrong, but don’t be too alarmed). Here are some things to look for while you’re searching for the source of the issue:
How can I prevent my EVO from leaking oil?
You will need to remove the spring & check ball from the inner pump tower; clean the check ball, replace if pitted & re-install. Crank over the motor with the plugs out & leads grounded until the oil is out of the cases. Re-fill oil tank, warm up bike & top off oil level. There is usually no preventing it on Evos that sit, unless you drain the oil.
If your crankcase breather is passing oil, chances are that something’s wrong (Okay, we know something’s wrong, but don’t be too alarmed). Here are some things to look for while you’re searching for the source of the issue:
Why is the oil coming out of the air filter?
Because the hot oil in the crankcase is easily displaced by the increased pressure and because it has a perfect path out of the crankcase via the breather, the first sign of impending trouble is nearly always oil migrating into the air filter. Once the oil is pushed into the air cleaner,…
Top breathing engines breath, or vent, through the top breather bolts which are threaded into the heads of a Harley Davidson motor. The air inside a motor is saturated with oil. It exits through the breather bolts and into the airbox where the air is filtered and the oil is captured in the air filter.
Because the hot oil in the crankcase is easily displaced by the increased pressure and because it has a perfect path out of the crankcase via the breather, the first sign of impending trouble is nearly always oil migrating into the air filter. Once the oil is pushed into the air cleaner,…
Why is transmission fluid leaking out of my vent tube?
Transmission fluid is leaking out of my transmission vent tube. Why is this? No engine code comes up when I run the obd 2 on it. I just replaced the solenoid pack in the transmission valve body today cuz I had that code.
Can a 1998 Oldsmobile Aurora pump out fluid?
–1998 Oldsmobile Aurora w/190k – SOLD! Yea, it’ll ride a little while then just pump out fluid. It’s more than a slow drip. It will just intermittently start spurting out fluid. I would top it off n level it n ride it again and it would do it again.
What to do about oil leaking from air intake?
1. For preride inspection, place vehicle on level ground and attached). 2. Turn filler plug/dipstick counterclockwise. Remove and wipe off the dipstick. Insert the dipstick back into the oil pan with the plug screwed completely into the fill spout.
Is it OK to blow oil out of air cleaner?
Your new HD should not blow oil out of air cleaner if everything is as it should be. I would take it back and demand something be done. If they won’t do anything, tell them your going straight home and calling HD service. Somebody else will chime in here shortly with more info I’m sure.
How do you fix a Harley Davidson breather?
The fix is either a dedicated breather kit, or barbs/banjo bolts, and rubber hoses, with a dribble can or breather under the bike. Figure 1.
What should the oil level be on a Harley Davidson?
The oil level is right where it should be on the dipstick when cold. I’ve done all the fluid changes and am very careful not to overfill. Any help would be appreciated. Top breathing engines breath, or vent, through the top breather bolts which are threaded into the heads of a Harley Davidson motor. The air inside a motor is saturated with oil.
Can a blow dryer be used on a Harley?
They also say not to use heat guns or blow dryers, but fine. On medium heat & high speed, it’s still way less heat & velocity than the element experiences during normal riding operations. A little 90-100 degree low pressureair (low enough to not compress the fibers, is perfectly fine.
What kind of air cleaner do you use on a Harley?
On medium heat & high speed, it’s still way less heat & velocity than the element experiences during normal riding operations. A little 90-100 degree low pressureair (low enough to not compress the fibers, is perfectly fine. Hell, same exact media for diesel rigs, K&N replies you to use a pressure washer & compressed air.