Question about 1985 Yamaha XJ 700 X Maxim

1 Answer

Its pushing all the oil into the air box it has good compression in the cylinders what would cause it to do that

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 3,567 Answers

Compression getting past the piston rings is buliding up in the crankcase. There should be a breather tube or vent on the gearbox to vent the tranny to the atmosphere. Clean or replace the problem fitting.

Posted on Jul 12, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Would a bad oil pressure switch cause a no start on a 98 b2500


Hi,
Symptoms of a bad or failing Engine Oil Pressure Sensor
  • Oil Pressure Light comes on, and you check the engine oil level, But oil level is okay, you can blame the false reading on the sensor.
  • Oil Pressure Light blinking constantly. This is the normal >check< oil pressure sensor Warning that the sensor is going out.
  • If the sensor is giving false readings, Dispite oil level, the sensor could be replaced.
If the Sensor is currently not working, and does not warn you of engine oil level, and oil level gets extremely low, The Engine could burn up/stall due to lack of oil, and may not restart.
Then you could probably blame it on the sensor.
But really would be lack of oil.

Intermittent No Start,
Common causes deal with 3 basic systems/areas of engin
  1. Compression, its the build up of air and fuel into the engines cylinders. Then is compressed by the pistons. And is under pressure. FAILURE An Air leak (vacumm leak) will allow pressure to escape.
  2. Ignition System, good battery, good relays, wires are not loose or disconnected, good 10volts to starter, 10volts to distributer>gives 20kvolts to spark plugs>has strong spark to ignite compressed air in cylinders. Other sensors need to work. Crankshaft sensor(ccs) Throttle Position Sensor(TPS), +more
  3. Air/fuel Ratio, Air Intake Manifold, and Fuel Pressure Sensor *Fuel Injection Pressure Sensor---if car is fuel injected*, air filter is clean and intake manifold hose, Throttle Plate Acuater, Idle Air Contro Valve(IAC). Also vacumm leak cause no start. To much air not enough fuel will cause lean fuel mixter==low power, low idle, no start.......To much fuel not enough air will cause rich fuel mixter==too much fuel could cause engine knock, flooding of engine wet spark plugs, No Start
Scan Vehicle computer for Codes, Places like AutoZone---Discount AutoParts will connect scanner for free, And Code Will say What is wrong with Vehicle,

Mar 08, 2017 | Cars & Trucks

1 Answer

What should the compressin be on a briggs


What is the compression ratio for my engine?

Briggs & Stratton side valve (L-Head) engines use a compression ratio of 6 to 1.Our Overhead Valve (OHV) engines use a compression ratio of 8.5 to 1.

What would cause my engine to "puff" smoke while it runs?

White/blue smoking usually indicates the burning of oil. Causes to this condition include:
  • Overfilling the crankcase with oil
  • Incorrect oil grade
  • Operating engine at greater than a 15 degree angle
  • Inoperative crankcase breather
  • Crankcase air leak
  • Blown head gasket
  • Worn cylinder and/or rings
  • Turning/Tilting the engine on its side for any reason (storage, changing oil, etc). If the engine has to be tilted, ensure the spark plug is facing upwards to help prevent oil from escaping the crankcase.
Also, be aware that any small air leak can cause an excess of air entering the crankcase and will create a higher oil mist than the breather is capable of handling. The excess oil will then return through the breather tube and back to the air filter. Engine oil capacity is dependant on your specific engine model. To determine your engine's oil capacity, please visit our Oil Capacitypage. Oil level checking and changing intervals are available on ourMaintenance Schedule page, as well as a hyperlink (text highlighted in blue) leading to oil changing procedures.
The "Oil" section of your Operator's Manual also contains this information. Other possible causes include operating or tilting the unit at an angle, an obstruction in the breather tube (located behind the air filter), damage to the cylinder/piston rings, etc.

Jul 23, 2015 | Garden

3 Answers

Cylinde 1 110LBS. LOW COMPRESSION CAUSING MISFIRE. WILL REPLACING PLUGS AND WIRES HELP?


What is the compression on the other cylinders, 110 lbs is low, however it is suffeint to fire so if the plug,coil and injector are working it should fire that cylinder

May 04, 2015 | 2005 Chevrolet TrailBlazer

2 Answers

Why is gas in the oil


When the cylinder intake valve opens on the downstroke a fuel and air mixture is pulled in. Then when the piston is about to go up the valve closes. As the piston continues its upward journey the fuel/air mixture is compressed until at the top the mixture is ignited pushing the piston down. Compression is achieved by keeping a good seating of the valve and the compression rings on the piston. These rings move along the cylinder walls and are lubricated with the engine oil. As these rings and/or valves wear then they "leak" or lose compression. It seems the rings have lost sufficient seating to allow some of the fuel/air mixture to bypass them.

Feb 20, 2015 | Cub Cadet SLT1054 54 in. 26 HP Kohler...

2 Answers

Oil is pumping into the carb adn air filter of my kohler 2 cylinder workman engine


Make sure you have good compression. Sounds like you have blow-by. Crankcase vents into the air box.

Aug 21, 2014 | Kohler CH25 PA-CH730-0040 Command Gasoline...

1 Answer

WHEN HIT GAS PEDAL BLACK SMOKE COMES OUT OF MY TAIL PIPE


look at spark plugs and make sure they are good and not worn (improper burning of fuel) also note which plug came from what cylinder, If all plugs are same color then you have a rich burn of fuel and not enough air mixture, if a few plugs are dark and the rest look clean and light brown then do a dry compression check on cylinders, if any cylinder is low on compression then proceed to do a wet compression check on cylinders, if they increase on compression then you have bad or worn piston rings which would burn oil causing smoke as well.

Feb 25, 2011 | Ford F-250 Cars & Trucks

1 Answer

My 1991 wrangler 6 cyl runs for few min then what appears to be exhaust and some oil comes out pvc and dipstick, whats wrong?


Sounds like a compression ring in one of your cylinders has broken and compression is being pushed into oil pan. Cylinder compression getting past the piston, instead of going out the exhaust it's going into oil pan and coming through engine (dipstick, air cleaner, PCV.) You'll need to have a compression test to confirm.

Jan 08, 2011 | 1991 Jeep Wrangler

1 Answer

Oil in the air filter ,RANGER 500 2X4/4X4


Has the oil been changed lately? A lot of times over filling the oil will cause oil to blow back thru the carburetor, Also if the air filter got caked with mud running the box with no lid or allot of dirt in the filter. The engine will try to use the crankcase breather hose as an air intake since not enough air was coming in the conventional way, therefore sucking in oil. Has it smoked at all? Sometimes if you try to shut it off oil will run back down the intake tubes into the air box. This may be applicable to your engine that the breather is being used to **** oil into the box due to lack of fresh air intake.
The other possibilities would be crank case pressure pushing the oil in (piston ring blow by), but that should (theoretically) result in low compression (since the cylinder pressure is getting to the crankcase instead of staying in the cylinder), the oil is overfull and being pushed out since air will compress but liquid will not, or poor crank case ventilation system design (but if that were the case likely there would be a recall as that would directly effect emissions which is federally regulated).

Oct 07, 2010 | Polaris ATV

1 Answer

I am blowing oil out of the vent from the valve cover on a 70's 6040. Any answers to this problem?


This is called blow-by. Start with compression test to find out is rings are ok. Need more information like gas diesel, model number of engine. So here is a general run down. Compression is getting into crank case. Several things can cause this. Possible causes are bad valve guides, rings, head gasket valve stem seals. Compression test will tell if low cylinder. If this is ok for your year model look to valve stem seals. If two cylinders next to each other low. Possible head gasket leak. Use compressed air 60-90 psi and listen were air is going. If blowing into crank case or intake exhaust manifolds. If crank case rings if not valves. I am going to assume your engine is burning oil or using more then normal. Possible white smoke from exhaust. If this is the case and compression is good valve stem seals should fix it. Hope this helps. Remember when compressing cylinders have both valves closed on top dead cylinder.

Mar 18, 2010 | B&C Allis Chalmers Tractor B,c,ca...

1 Answer

Motorcycle knock and blow-by (4 stroke)


hi,might be able to help,a compression test would be a good start,however,if you already have the engine apart,replace the rings anyway,if the engine has been overheated the rings although they look ok will have lost their tension and therefore their ability to hold sufficent pressure against the cylinder walls,therefore allowing blowby,or compression leakage,the other area i would look is the condition of the valve seals and seats,both intake and exhaust,if the engine has been overheated,the seals may have cracked or become weak,whenever i have my race bike apart with the head off i always relap the valves(just a light cut)and this ensures a good seal through the head etc,hope all this helps...cheers ian

Jan 03, 2010 | 2000 kawasaki KLX 300

Not finding what you are looking for?
1985 Yamaha XJ 700 X Maxim Logo

Related Topics:

150 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

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

Answer questions

Manuals & User Guides

Loading...