Question about Motorcycles

1 Answer

Loosing oil oil buildup in crankcase

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Motorcycles Master
  • 8,404 Answers

Is it being lost or is it building up??? There is no way for the volume of oil to increase unless you are adding oil to the crank case. If the volume IS increasing ... I would suspect you are actually adding gas (check for a bad carb float) or water (check compression for possible head gasket failure if you have a water cooled machine). In either event, this is a serious issue and unless you have special training and tools, you probably cannot fix it. It is noted you mention neither make nor model of the machine in question, much less the year.

Good questions get good answers at'

Thanks for your interest.

Posted on Jul 26, 2013


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


Non detergent oils always provide the best lubrication but the detergent oils are more convenient because you have less sludge buildup in the crankcase. See what your engine manufacturer recommends. They are out of warranty so their recommendation is not vital at this juncture.

Aug 29, 2017 | Cars & Trucks

1 Answer

Vent tube on motor is stopped up on kawasaki prairie 300

Hi, Craig for more information about your question and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
Oil Pressure Buildup
oil coming out crank case vent
Crankcase Breather trouble

Mar 27, 2016 | kawasaki Motorcycles

1 Answer

Were is the oil drain plug on a 2008 bigdog mutt 117C.U.

warm the oil up.....take a little ride.
find the oil drain at the bottom rear of the oil tank. drain oil. replace filter.
the HD style V-twin is a dry sump engine. there shouldn't be much oil in the crankcase. DO NOT remove the plug in the bottom of the crankcase!!!!! if you strip it, you will have to replace the crankcases......if it falls out, you will loose all your oil while riding.
fill the oil tank with the oil of your choice. any 20w-50 if acceptable. do not top it off! the oiling system requires an air gap at the top of the oil tank. typically 3 quarts of oil.

Jun 02, 2015 | Motorcycles

1 Answer

Why is oil in my airrfilter

Did you overfill the crankcase? check that first. If that is ok is the PCV valve working and the hoses in good condition? If that is ok then check for excessive engine crankcase pressure due to piston rings being worn or a scored piston to cylinder wall.

Sep 28, 2012 | 1991 GMC Sonoma

1 Answer

1981 Yamaha xt 250 exessive oil buildup in air box

cud be from the crankcase vent hose-many years on it--chec also carb cause it maybe commin from cylinder-bad rings on piston

Nov 03, 2011 | 1981 Yamaha XJ 650

1 Answer

My car runs realy well but it sounds like the lifters are ticking what can i do to fix it?

First off make sure you are using the correct weight oil for this vehicle. Also make sure you are using a quality filter such as Purolator, Wix, or Bosch. Even if you are using a good filter it may have a bad drain-back valve if this started right after an oil change. If that is the case replace the filter. If you answer yes to these questions then you may have varnish buildup or a sludge buildup. Purchase a can of Seafoam Engine Tune and pour 1.5 ounces per quart of oil capacity in the crankcase. Drive the car 50 miles and then change the oil/filter. If this did not solve the problem repeat the procedure and drive it 100 miles and change the oil/filter. This should solve the problem unless you have a really bad sludge issue.

Oct 14, 2010 | Lexus ES 300 Cars & Trucks

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

3 Answers

Buildup in crankcase

it water mixed with your oil,it could be condensation or some how coolant entered the oil system.

Dec 27, 2009 | 2001 Chevrolet Malibu

1 Answer

Pressure in gas tank

leave the cap cracked open slighlty as to assure no pressure builds, and if the problem accures during that time your problem is somewhere else

Aug 11, 2009 | Heating & Cooling

2 Answers

Oil come out the air cleaner

Too much crankcase pressure or the breather pipe is split/dosconnected. The crankcase breather goes into the rear of the air filter and the crankcase gasses are drawn in to the cylinder with the gas/air mixture and burned

Nov 20, 2008 | 2003 Harley Davidson FLSTFI Fat Boy

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

78 people viewed this question

Ask a Question

Usually answered in minutes!

Top Motorcycles Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4821 Answers


Level 3 Expert

79077 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Motorcycle Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides