Question about 2004 ATK 500 Intimidator

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Oil leaking I have an 500 intirmidator and it's dropping a small amount of oil from the crank case oil breather hose after a ride

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Any tips on stopping this or why it's occurring??Two questions 1.) How full is your crankcase with oil? In the middle of the window? Higher? Remember look when the bike is upright 2.) Do you spend much time at high RPMs?,

Posted on Nov 10, 2008

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John Deere LT 155, why are small amounts of oil dripping into the carburetor air intake thru he oil breather hose connected to that air intake chamber

the breather hose is the means of allowing the compression by pass gasses to not build up pressure in the sump and it exits into the air inlet system near the air cleaner
for oil to be dripping there indicates
1--excessive oil in the sump
2-- worn rings allowing excessive blow by and boiling the sump oil
3-- incorrect oil used in the sump ( too thin) try a 30w -50 grade

Dec 18, 2016 | John Deere Garden

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2006 suzuki vinson 500 5speed oil in breather box

A small amount is ok. You have a crankcase breather hose that vents into air box. Large amounts are BAD. Check engine oil level.

Oct 19, 2014 | Motorcycles

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Way to much oil coming out air cleaner

Oil coming out of the breather is natural and normal, with basically no way to stop it. There is about 1/2 qt of oil in the bottom end of an engine, as the pistons travel downwards, the air that is under them is being pressurized and is vented out of the engine by a rotary breather valve in the case. The air picks up a small amount of oil from the bottom end as it leaves, then the air/oil mist is vented either into the air cleaner (EPA Regulations) or best if vented to the atmosphere. NOTE: WORN RINGS ALLOWINGS EXCESSIVE COMBUSTION PRESSURE BLOW-BY WILL MAKE THIS SITUATION EVEN WORSE. When it\'s vented into the air cleaner, some if it recirculates into the engine and out the exhaust, the rest saturates the air filter and then eventually gets blown all over the side of the bike. The best way to vent it, is to route a hose from the breather system down to the frame between the engine and trans, run it under the bike on the right side, point the hose down to the GROUND and zip tie it in place.

To stop the leaking breather BOLTS...remove them, and use brake cleaner to completely remove all oil from them, the washers, brackets and threads in the head. Use liquid teflon thread sealant on the bolt threads, and a light film of black rtv on the faces of all the washers and brackets, install everything, let sit for 24 hours, then ride.......if done properly and rtv is CURED, it won\'t leak.

Also note that most HD\'s with the oil tank mounted under the seat and are left sitting for a couple months will PUKE oil from the breather, this is due to the gravity....the oil will slowly seep through the oil pump and collect in the bottom of the crankcase and get blown out the breather when the bike is started.


The HD engine design is a dry sump engine, but there is always a small amount of oil in the bottom end....THIS IS WHERE THE OIL MIST COMES is "possible" for too much oil to give your symptoms, if you have too much oil in it, the oil tank is vented back into the cam compartment, causing excessive oil build up in the bottom end, if this were the case, the oil would be PUKING from the breather, because the oil pump does not have the ability to scavenge that much oil back to the tank that quickly, which in this event, the tank doesn\'t have the room to store any way.

But even so, this is an all too common question and the symptoms are seen on almost every HD on the road.....could it be possible that EVERY HD has too much oil??? In my answer, I tried to explain WHY this happens.....even with or without too much oil.....this will still happen.

Jul 12, 2014 | 2003 Harley Davidson XLH Sportster 883...

1 Answer

BMW C600 sport oil leak after riding

It is possible that either a crank seal is leaking or a gear box shaft seal is leaking check for over full in either case first

Jan 12, 2013 | Cars & Trucks

1 Answer

Positive cranke case breather pipe leaking oil smoke when running

Check oil level and or change oil if necessary.

Oct 06, 2012 | Ural Motorcycles

1 Answer

I have oil comin in my throttle body from the 2 rubber hoses on the top of the engine

The hoses are crank case breathers on the engine side should be a pcv valve remove and shake it if it rattles it is still good, there should be a small amount of oil coming from the lines, it pcv is ok most likely problem is worn out cylinder rings

Aug 08, 2011 | 1998 Cadillac Catera

1 Answer

Breather hose covered in black oil what can caurse this breather was replaced 5 months ago now oil hose soaked in oil is it serious its a landy 1994 disco

Any oil leak should be attended to ASAP for obvious reasons... could be a split hose or excessive crank case pressure. If the oil loss is minimal then no need to panic but I would get it looked at by a Land Rover speciallist.

Nov 18, 2009 | 1994 Land Rover Discovery

2 Answers

Oil leak out of a breather hose

a small amount of oil from the crankcase vent hose under hard acceleration is most likely normal.American bikes don't leak oil,they mark their spot!

Sep 28, 2009 | 2004 Triumph America

1 Answer

What causes big oil leaks on the ground from a 2003 triumph speedmaster. I go for a ride and then park the bike, later there is a pool of oil on the ground. It seems to be coming from one of the overflow...

yh thats the breather pipe they mostly leak because there is too much oil in the crank case or compression is passing the rings are causing pressure on the oil so it gets forced out the breather

Aug 26, 2009 | 2003 Triumph Speedmaster

1 Answer

Oil leaking from under the seat of my Kawasaki klr250

not sure if this will help, but the crank case has a breather tube that is around that area. if the bike is on its side or has been doing wheelies, some oil can get thru the breather hose causing that problem.

May 02, 2009 | 2003 kawasaki KLR 250

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