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 04-08-2009, 11:13 Post: 161834
rhardmeyer



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 White smoke out breather hose

I have 1982 1540B Shibaura 4X4 I am looking for water pump and the 2 cyl is pumping out white smoke out the breather hose on the top of the motor. I think it needs a new head gasket and if so where do I get one from?

Water pump
Head gasket






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 04-08-2009, 13:25 Post: 161837
auerbach



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 White smoke out breather hose

The GreyMarketTractorClub helps Shibaura owners.

If not, a pump can often be repaired, and if you can get the old gasket off in one piece, some shops (e.g. Hoye Tractors) custom-cut duplicates.

If not, look for a Shibaura dealer in Japan, getting a translator if necessary.

Good luck.






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 04-08-2009, 15:02 Post: 161841
earthwrks

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 White smoke out breather hose

Smoke is one thing, and water vapor is another. Which is it? If it actaully smoke, it might be valve guides, or blow by from the rings. I think, if it were the head gasket you'd be seeing oil in the coolant or vice versa. I'd look at both the oil and the coolant before you start tearing into it.






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 04-08-2009, 15:21 Post: 161847
harvey



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 White smoke out breather hose

Check with lsheaffer he post frequently and he handles many of the import parts he is also very knoledgable on those tractors.






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 04-08-2009, 17:35 Post: 161853
candoarms



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 White smoke out breather hose

Rhardmeyer,

White smoke from the breather hose is a good indication of having a bad intake valve.

Either the intake valve, or the valve seat could be pitted. The other possibility is that the head may be cracked clear through the intake valve hole.

Hope you find a new head gasket for it. But you may want to take the head in and have it inspected, as well.

Joel






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 04-08-2009, 17:59 Post: 161854
earthwrks

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 White smoke out breather hose

Joel, I defer to you (I'm admittedly not a mechanic), but you don't suspect the rings?






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 04-08-2009, 23:10 Post: 161861
candoarms



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 White smoke out breather hose

Earthwrks,

I don't think it would be the piston rings. If the rings were bad, combustion gasses would leak by the pistons and into into the crankcase. Additionally, engine oil would end up in the combustion chamber.

Bad rings produce very high levels of crankcase pressure. This usually shows up as excessive smoke exiting through the crankcase vent.

Badly worn rings will also produce an unusually large amount of exhaust smoke.....something other than white in color.....usually blue or black.

When smoke starts blowing out through the intake air hose, it's pretty much a sure thing that combustion gasses are being vented up through one or more or the intake valves. Either the intake valve, the head, or the head gasket is faulty.......sometimes a combination of these things.

Overheating is a common symptom with a blown head gasket. High pressure gasses are probably entering the cooling circuit through a crack in either the head gasket, the head, or through a crack in the block. Most often it's the head gasket.

A faulty water pump will cause overheating problems, as will faulty thermostats, radiator caps, collapsed hoses, and low coolant levels.

Joel






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 04-08-2009, 23:24 Post: 161862
candoarms



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 White smoke out breather hose

And before somebody yells at me for forgetting the obvious........Plugged up radiators. Geeezzzz.

Joel






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 04-09-2009, 09:11 Post: 161869
Murf

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 White smoke out breather hose

Quote:
Originally Posted by candoarms | view 161861
When smoke starts blowing out through the intake air hose, it's pretty much a sure thing that combustion gasses are being vented up through one or more or the intake valves. Either the intake valve, the head, or the head gasket is faulty.......sometimes a combination of these things.



I took rhardmeyer's comment "...pumping out white smoke out the breather hose on the top of the motor." to mean the vent in the valve cover, i.e. PCV hose, not the air intake.

If that is the case I'd be leaning towards rings myself.

Best of luck.






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 04-09-2009, 10:30 Post: 161875
candoarms



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 White smoke out breather hose

Hey Murf,

Yep. If I mistook the "Crankcase Vent" as being the fresh air intake hose, then both you and Earthwrks would be correct.

A short list of some of the things that cause large amounts of smoke to vent from the crankcase are faulty rings, a hole in a piston, or a cracked piston. Could also be a badly worn, egg-shaped, cylinder.

I may have misunderstood the terminology used.


Joel






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Discussion Boards > Active Subjects > Messages as Posted > Shibaura Forum

Thread 161834 Filter by Poster:
auerbach 1 | candoarms 4 | earthwrks 4 | harvey 1 | Murf 3 | rhardmeyer 2 |




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