Question about Harley Davidson XLH Sportster 883 Motorcycles

1 Answer

Why does oil pressure build up in oil reservior

Pressure build up and push oil pass the o-ring in the oil cap.

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  • Harley Davidson Master
  • 1,554 Answers

Check for a pinched/blocked vent line.
Possible bad piston rings and over pressurizing the crank case (compression blow-by).
Overfilling the oil tank. Check with engine hot.
Also, it could be just a aged/dried up/ cracked o-ring.

Posted on May 07, 2014

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Posted on Jan 02, 2017

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SOURCE: 1989 sportster building pressure in oil tank

A little pressure is normal on the sportster. I have seen where if the oil tank is over full it can blow the dip stick out. Most of us who ride sportsters keep the level showing on the dip stick about midway between the low and full line. Doing this will also help with oil blow by out the air cleaner.

Posted on Mar 31, 2009

SOURCE: oil cap popping off

The engine breather pipe is clogged ! clean it and the problem sloved!

Good luck.

Knight (Yamaha seca XJ750 A 1981)

Posted on Apr 17, 2009

  • 5 Answers

SOURCE: 1969 triumph trident bobber has to much oil

yes! sounds like exsesive crankcase pressure. time for a top end rebuild.

Posted on Apr 24, 2009

watergatetec
  • 2 Answers

SOURCE: No clutch pressure

Its more than likley that you have an air lock in the clutch fluid ,try bleeding it again very carefully

Posted on Apr 29, 2009

bsdracing
  • 57 Answers

SOURCE: i have a 1997 kawasaki classic 1500 having pressure problems

the seal in your water pump but doubt it sounds like head gasket was it installed correctly? the head gasket is a crush gasket and can only be tightened one time after that it is junk and will not seal again there made from copper and crush really easy hope this helps good luck

Posted on Apr 30, 2010

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Have a 1973 Ford and I was wondering can the oil leak from the stem of the disturber


TYes it can, although not common. there is an O-ring on the shaft that seals inside the dist. hole. You can replace it easily after removing the Dist.Make sure You leak is not coming from the the end seals of the intake manifold?

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1 Answer

Pressure build up in oil reservior.


Most likley abswer is to much oil in the system. Try running it halfway between add and full and check it when it is HOT

May 07, 2014 | Harley Davidson XLH Sportster 883...

1 Answer

Pressure build up in oil reservior


Most likely too much oil in the system. Check it HOT and only have about half way between add and full. Definitely not more than the full mark.

May 07, 2014 | Harley Davidson XL Sportster 883...

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Oil pressure leaks tapet cover


you may have broken piston rings and your sump is being pressurized and blowing the oil out

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Pressure is building up under valve cover. its pushing oil out. when opening oil cap lots of air comes out


either oil ports are clogged not allowing drainage? or compression is bypassing the rings placing it in the crankcase assy area, Meaning worn cylender or cracked ring most likely

Jun 09, 2010 | 1996 Volvo 960

1 Answer

Pressure inside oil tankl


All air compressor will build pressure in the oil reservoir. This is caused by blow-by past the piston rings. The reason all compressors have this is due to the relatively slow rpm that the compressor crank is turning. Unlike a car's engine that is turning so fast the compressed gas doesn't have time to leak by the rings.
To deal with this problem air compressors have a special oil fill cap that alows the pressurized air to be vented out of the oil reservoir chamber.

There are three reasons that you are having this problem. The first is you have a clocked oil cap vent. Second is you have the wrong type of oil cap.
The third is the bad one. If the problem is unrelated to the oil cap then it means there is more blow-by then the vent cap can handle. This would indicate that you have worn or broken rings and/or worn cylinder wall.

If your compressor is not old (low hours), then take a close look at the cap. If it has more then 2000 hours then you will most likely need to rebuild the compressor, depending on the make and model.
Hope this helps and good luck.


Dec 12, 2009 | Air Tools & Compressors

1 Answer

Coleman lantern doesn't appear to be pressurisig when priming with the pump as a result it doesn't light. I have checked for blockages and there doesn't appear to be any. Any thoughts


After verifying enough fuel in the tank, if you have turned the pump plunger handle counter clockwise 1/2 turn or so and cover the hole in the pliunger with your thumb while pushing it in, lift thumb off the hole while pulling it out and the pump is not building pressure, you can apply a few drop of oil to the plunger oil hole. If it still won't build pressure, Loosen the tank fill cap slowly to release any pressure that may be built up and turn the pump retaining ring to the left and remove the pump unit. Inspect the plunger cup for deterioration or cracks. replace partsasnecessary. Should be available where lanterns are sold.

Aug 21, 2009 | Sport & Outdoor - Others

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

1 Answer

Craftman 3gal/1hp air compressor runs normal, but


Chek for pressure BEFORE REGULATOR,if the problem remains worn rings or valve seats most likely source of trouble.

Aug 09, 2009 | Air Tools & Compressors

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