Oil coming out of dipstick

[Taylorman]

I have oil leaking out of my dipstick tube on my 455. This is a new problem that i never had before. I had to pull the crank and pistons out cause my rear seal was leaking. Put it all back together and now their is oil leaking out of the dipstick tube. It just bubbles out at idle. Any possible solutions.

[AMC-Nut]

I have had AMC's do this to me and just used a homemade "Crank Scraper" and problem solved. I'm not sure if this is your problem or not, have you checked to see if you crankcase is sucking air from somewher?

[Nucking futs]

To much oil in the pan??

[rrrr]

Is the arrow on your motor pointing the right direction?
http://www.greece.k12.ny.us/ath/Web_files/Buttons/Yellow_Up_Arrow.jpg

[Taylorman]

Is the arrow on your motor pointing the right direction?
???????????????????????????????????????

[Hallett19]

Is the arrow on your motor pointing the right direction?
http://www.greece.k12.ny.us/ath/Web_files/Buttons/Yellow_Up_Arrow.jpg
:D This is the all time best smart ass response !!!!! :D
I LOVE IT !!!

[Moneypitt]

What was changed during this tear down? Rings, gaskets????...............MP

[Terminal Velocity]

i recently did a rebuild for a guy and when i started the motor up it was pushing oil out the dipstick. Couldn't figure it out until i unscrewed the oil fill and it relieved the pressure in the motor. Apparently with this one it was sealed good enough that the crankcase pressure was pushing the oil out.
Just my .02 and what happened to me.
James

[Infomaniac]

Does the dipstick tube extend under the oil level?

[sleekcraft76]

maybee the ring gaps lind up causing blowby?

[77Eliminator]

Do a leak down test? Better to safe than sorry. The sorry will cost you $$$$$ :hammerhea

[Moneypitt]

What is new or different????

[Taylorman]

I tore it down to fix a leaking rear main. Put new bearings and all new gaskets of course. Used the same rings since the motor only had about 20 hrs on it. Did not hone the cylinders, should i kick myself now. They seamed to be pretty smooth. The dipstick tube does not extend into the oil.

[Moneypitt]

Didn't we just go through a breather choice thread about this boat/ engine? You had a leaking rear main seal? right? Hmmm, seems like the pressure is NOW coming out the dipstick instead of the rear main seal. Just guessing here.....but lets go over the breathers again.............MP

[Taylorman]

I dont remember going through a breather choice. I have a crankcase evac on it now.

[Foggerjet]

Taylorman, For whatever reason it seems you are pressurizing(sp) the crankcase. Do you run a PCV or breathers? I was getting oily film on my valve covers with a PCV. I installed a vented/baffled puke tank from Stef's (plug for straub). One line from the top of each valve cover to the tank. The tank has a baffle between the oil/vapor section and the filter on the top of it. It's in a lousy place in the bilge or i'd take a picture. I use a spraypaint lid to slide under it and open the petcock in the bottom to drain any oil out. Usually just a little bit. Now there is never any oil leaking/blowing out. The system is basically a sealed system with the exception of the 3" K&N filter on top of the puke tank. There are other alternatives, but this did work. Looks tidy also.
fog

[Moneypitt]

That is the NEW link. Which way is the pump turning???? Are you pressurizing the pan instead of evacing it?.........MP

[Taylorman]

Its not a vaccumm pump, its an evac kit like this one made by Shogun Industries (http://www.shogunindustries.com/cgi-local/Web_store/ws400CS.cgi?cart_id=1041201011620580&page=products.htm&view_item=E42798)

[Moneypitt]

Open both valve covers completely, just open holes, and see if the oil still bubbles out the dipstick..... If it stops you know where the problem is...Are the check valves in corectly? ..........MP

[Taylorman]

Good idea. I'll try that. Thanks.

[Taylorman]

Open both valve covers completely, just open holes, and see if the oil still bubbles out the dipstick..... If it stops you know where the problem is...Are the check valves in corectly? ..........MP
Found the problem. That was it. I took the balls which act as the check valves from the Shogun breathers and no more oil. I guess im going to ditch the crank evac and just put some regular breathers on this thing. What cha think?

[jdf]

smart move

[Moneypitt]

Where are the check balls in the system, and why do they allow the pressure to pulsate at the dipstick? Seems like the headers should have some "pull" on the check valves. How stiff are the springs loading the balls? Then again, and I hate to even bring this up , but a PCV VALVE WILL CURE THE PROBLEM. MP

[GofastRacer]

This is as far as I'm concerened the best Vac U Pan system around, it's available from Moroso or you can make your own. All it consists of is Mopar breathers and Chevy smog check valves and a couple of pipe nipples from Home Dump!...I tried it on my tow vehicle once it was good for 2 miles to the gallon!..
http://www.***boat.com/image_center/data/505/1225900_part.jpg

[Moneypitt]

Yes, Art, simple pieces, simple solution. Except he already had a problem with someones "kit" to do the same thing. Thats why I was asking questions about the check deals. I think the "kit" was complete, but some how sprung the wrong way or???.................MP

[GofastRacer]

Yes, Art, simple pieces, simple solution. Except he already had a problem with someones "kit" to do the same thing. Thats why I was asking questions about the check deals. I think the "kit" was complete, but some how sprung the wrong way or???.................MP
Yep, that's why I like to stick with the K.I.S.S. method, always seems to work the best!.. :)