Question about VTwin Horizontal OHV Engine with Electric Start 620cc GX Series 1in x 2 2932in Shaft Model GX620U1QXC2

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What would cause crankcase pressure buildup in 20 hp honda engine

Builds up pressure and blows dip stick out

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Worn piston rings would be my first guess. If so then the engine needs a rebuild.

Posted on Oct 12, 2013

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3 Answers

Oil keeps blowing out of the dipstick what could be causing this. Thank you


hi.
oil blowing out of dip stick normally means that the engine is getting sump pressure. this is normally caused by wear on the piston rings where the compression of the engine is passing down past the pistons and causing pressure in the sump and then blowing the oil up through the dip stick tube. can also be caused by having a head gasket gone as well as the compression is being blown down through the oil gallery . hope this is helpful to you

Oct 13, 2015 | Vehicle Parts & Accessories

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1990 Gmc pickup truck has blow back at dip stick , how can I fix ?


Check PCV system. It may be time for the compression leak down test to see if rings are shot.

Feb 20, 2015 | GMC Cars & Trucks

1 Answer

2000 Windstar, 3.8L, suddenly started smoking. Pulled over and opened hood only to find that most of my oil had dumped out on the ground. I shut it off before and internal damage. Had it towed home to


Check your PCV valve (Positive Crankcase Ventilator). Normally located on a valve cover with a hose to the intake manifold. Remove it and shake it and if it does not have a rattling noise and is clogged, the valve is defective and not allowing pressure that builds up in the engine to be released through the intake manifold thereby forcing engine oil through any loose "exit" such as the dip stick tube or loose valve cover bolts, etc. This valve allows the engine to "breath" so to speak. No rattle...replace...not expensive as compared to what damage it can cause. Good luck...Ken

Jan 05, 2015 | 2000 Ford Windstar

2 Answers

Have oil spitting out of carb and dip stick fill tube just started doing that on 19 hp kohler courage


if engine is not overfull you have bad rings on piston have to take in to have it done may end up short blocking it witch is cheaper to do replace rings cheaper by far 200.00 per cylinder

Sep 14, 2014 | Garden

1 Answer

Air in crankcase


is the oil over full ??? then i would suspect a crankcase breather issue which should be in the valve cover... then I would be looking at a head gasket issue, rings or all of the above

Dec 28, 2013 | Honda 8 HP Engine

1 Answer

The oil dip-stick is blown out of its seat when the compressor runs


Without knowing what make or model you have, check the following:

1. Some, not all, compressor dip sticks have venting holes for the crankcase. If the vent holes are plugged or the check ball is stuck the dip stick will get forced out when the piston comes down.
2. Make sure the oil level is where it's supposed to be. Too much oil in the crankcase will cause the motor to work harder and the excess oil being splashed around the crank case can overwhelm the vents in the case or dip stick and again blow the dip stick out.
3. Worst case, you have worn or broken rings on the piston(s), a hole in a piston or a badly scored cylinder(s) and air is leaking past the piston and creating pressure in the crank case and blowing the dip stick out.

Jan 26, 2011 | Campbell Hausfeld Air Tools & Compressors

4 Answers

Whaen car idles its fine but when driving it sputters an when it builds boost it blows the intake pipe off the throttle body an oil comes out of the throttle body


in your car the air ventilation system is freeze up causing a build up of pressure which caused the oil to burst out. there is the mosture sludge build up under the oil fill cap . its advisable to clean everything up and then check out by starting the car. also spray crab cleaner in the throttle body and check out. as per me the problem is causing because of :-- I guess the breather vent tube was full of oil - frozen in there somehow. Must have to do with that sludge buildup on my oil fill cap. This is the one coming off the front on the left side of the oil filter. It goes down under the engine. This blockage caused a pressure buildup in the crankcase which caused oil to blow by the pistons and into the combustion chamber and out into the air intake hose and throttle body. get the spark plugs removed and cleaned up all the oil. The reason it sputter is because of all the oil in the combustion chamber. No air could get in. get the oil change and insulate the breather pipe in case of future freeze ups. This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

Feb 27, 2010 | Saab 9 3 Cars & Trucks

3 Answers

Oil blow back from out of the dip stick, what may be causing this and how to resolve the problem.


Time has come to retire this vehicle to the recycle plant and get yourself a nice new SMALL car thats fuel efficient.Most obvious cause is worn pistons and rings

Oct 23, 2009 | 1989 GMC Suburban

2 Answers

Oil coming out of dipstick


What engine? The oil level is good, not to high? If yes, it has too much crankcase pressure. Change the PCV valve and check the crankcase air filter. Also make sure you have vacuum at the PCV.

Apr 09, 2009 | 1986 Chevrolet Camaro

1 Answer

750 Honda oil leak


Blow-by on the piston rings builds pressure in the crankcase. There is a case vent and it may be partially plugged or the vent hose pinched. The pressure has gotta go somewhere and the sprocket shaft seal is the choice.
Oil goes out with the pressure. More revs = more oil on the garage floor. Check and clear the gearbox vent and stick in a new sprocket shaft seal.

Please rate this solution. Thanks!

Apr 07, 2009 | Honda CB 750 Motorcycles

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