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oil blow out
PostPosted: Sun Feb 09, 2014 8:06 pm Reply with quote
spanky
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Ok got the headlights and charging issue fixed and now when I drive the truck it blows a s%&t load of oil out of the breather hose that runs back into the air cleaner. I put a small filter on it and it blows oil everywhere. I figure it has blow by but is it blowing that much oil out with it. Anybody know what could cause this?

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PostPosted: Sun Feb 09, 2014 8:14 pm Reply with quote
Yotaoffroad27
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Worn out piston rings allowing compression gasses into the crank case.

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PostPosted: Sun Feb 09, 2014 8:46 pm Reply with quote
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Check your compression. Should be lo in one or more cylinders. Post numbers.

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PostPosted: Sun Feb 09, 2014 8:49 pm Reply with quote
spanky
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Yotaoffroad27 wrote:
Worn out piston rings allowing compression gasses into the crank case.

I know that but its blowing a lot of oil out for some reason. I can see some but damn

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PostPosted: Sun Feb 09, 2014 8:50 pm Reply with quote
spanky
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Yotaoffroad27 wrote:
Worn out piston rings allowing compression gasses into the crank case.

I know that but its blowing a lot of oil out for some reason. I can see some but damn.
Wonder if I could put some sort of check valve on it to buy me some time?

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PostPosted: Sun Feb 09, 2014 8:57 pm Reply with quote
Yotaoffroad27
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spanky wrote:
Yotaoffroad27 wrote:
Worn out piston rings allowing compression gasses into the crank case.

I know that but its blowing a lot of oil out for some reason. I can see some but damn.
Wonder if I could put some sort of check valve on it to buy me some time?


The crank case vent relieves pressure from the.. wait for it... crank case. If you put a check valve in the vent, the crank case will build pressure till it finds another weak point and forces the pressure out there. Short of rebuilding the engine, You can keep doing what you are doing. Catch the oil and put it back in the engine when you stop. Maybe a thicker weight in oil will help?? idk, Robert would be the man with the answers on this one....

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PostPosted: Sun Feb 09, 2014 9:39 pm Reply with quote
spanky
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Yotaoffroad27 wrote:
spanky wrote:
Yotaoffroad27 wrote:
Worn out piston rings allowing compression gasses into the crank case.

I know that but its blowing a lot of oil out for some reason. I can see some but damn.
Wonder if I could put some sort of check valve on it to buy me some time?


The crank case vent relieves pressure from the.. wait for it... crank case. If you put a check valve in the vent, the crank case will build pressure till it finds another weak point and forces the pressure out there. Short of rebuilding the engine, You can keep doing what you are doing. Catch the oil and put it back in the engine when you stop. Maybe a thicker weight in oil will help?? idk, Robert would be the man with the answers on this one....


Gee I was under the impression that the wait for it..................wait some more ........ pdf valve vented crankcase pressure! This is in the from of the valve cover and is supposed to reroute straight ago into the carburetor.

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PostPosted: Mon Feb 10, 2014 8:18 am Reply with quote
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Just go get that 3RZ that Jimmy is selling...so I don't buy it and start doing something silly with it.

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PostPosted: Mon Feb 10, 2014 8:42 am Reply with quote
sgtbriangreen
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The PCV valve is supposed to pull vacuum from the valve cover. If you are blowing that much oil, you definately dont want the PCV hooked up. All that oil will be going into your intake.

Do a compression test. IIRC you should be in the 140-150 psi range. If you completely block it off, that compression will find the next weakest gasket. Valve cover, oil pan, timing cover, etc.

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PostPosted: Mon Feb 10, 2014 9:22 am Reply with quote
Cumminsdzl
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Unhook the line from the intake so you arent dumping oil back into the carb. Route the line to a catch can of some sort to control the mess. Empty the catch can as needed. The can will need to have a vent built into it so you dont build up crank case pressure. All of this just helps contain the oil, does nothing to fix your issue, just keeps things a little cleaner until she blows.

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PostPosted: Mon Feb 10, 2014 10:35 am Reply with quote
DAWGTOY
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nothing short of new pistons and rings is gonna "stop" the puking.
a catch can will be your best bet. like kyle said vent the can and
make it removable so you can pour the oil back in the engine.
sounds like your mill is on it's last legs.
i saw one on nc4x4 for 400 that looked good just the other day.
beware of used engines---the last 300$ "good running" engine i bought
needed ALL the gaskets and seals replaced cause they were hard as rocks
and leaking badly. ended up rebuilding it with new rings and bearings--
honed the cylinders, turned the crank and rebuilt the head. all that
suddenly made it a $700 engine. sucks really that theres not too many
good running used engines out there anymore.


now on your engine---is the pcv hooked up? it does matter. it'll pull
some of the oil vapor into the engine and burn it. the pcv system
pulls a slight vacum off the intake to "positivly ventilate the crankcase"
and the other vent can be run to a catch can if it still pukes.
it's crazy how many people think that the pcv system has
no use. (blowing valve cover gaskets and main seals is a common
result of this)


peace

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PostPosted: Mon Feb 10, 2014 1:20 pm Reply with quote
sgtbriangreen
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Maybe run the PCV line to a catch can then a line from the catch can to the vac side of the carb. Pretty much add the catch can in line with the PCV.

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PostPosted: Mon Feb 10, 2014 2:49 pm Reply with quote
Cumminsdzl
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sgtbriangreen wrote:
Maybe run the PCV line to a catch can then a line from the catch can to the vac side of the carb. Pretty much add the catch can in line with the PCV.


Yep, just make sure the oil has a place to "fall" into the catch can. Let the heavy oil fall into the can and the light air pass right on through the top side of the catch can.

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PostPosted: Mon Feb 10, 2014 2:55 pm Reply with quote
sgtbriangreen
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Cumminsdzl wrote:
sgtbriangreen wrote:
Maybe run the PCV line to a catch can then a line from the catch can to the vac side of the carb. Pretty much add the catch can in line with the PCV.


Yep, just make sure the oil has a place to "fall" into the catch can. Let the heavy oil fall into the can and the light air pass right on through the top side of the catch can.


At least you will know when the catch can gets full. Killin skeeters!

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PostPosted: Mon Feb 10, 2014 7:05 pm Reply with quote
spanky
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Ok that's what I figured I would have to do. I got a complete bottom end coming for 25 bucks coming so I can rebuild it and just put all my stuff on.

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oil blow out
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