Ramdriver15

alright i have been putting this opff for some time now, since i have increased fule flow and gained some power under the hood i noticed that the valve covers are spraying oil everywhere. I have heard about breathers on the covers? What would be the best route to fix this, and i also plan on replacing the valve cover gasket when i make this move.....
thanks for some input

clutch1

might try checking your blowby tube you may need to clean the screen. not a fun project

Ramdriver15

i believ theblowby tube still works, the diff is covered with oil because i dont clean it... although i notice that there is never any oil drips so im guess low amounts of blowby

Ramdriver15

but with the breathers what is the best route to go???? any pics, or install instructions?

kawi600

Check the vacuum pump? Might be pressurizing the motor
Spec is 8-25 inches mercury I think

Ramdriver15

how do i do that? and yeah, never even heard of testing the vaccum pump, so make me smarter lol

kawi600

Put a vacuum gauge on the line where it comes up off the pump and goes into the first splitter. Im not sure 100% if youd see a bad reading if you were pressurizing the engine with it. Maybe pop open the oil fill cap and see if it is venting lots of air

Ramdriver15

alright now that is easier of a test, but would the breathers be a good idea?

Scramblinman

They will just be somewhere else for oil to blow out of.

Ramdriver15

oh boy, lol then how do we fix the oil blow out???

infidel

As said a vacuum leak will cause increased blowby.
Easy way to check for a leak is to shut the engine down, wait a few minutes and disconnect any vacuum line under the hood. If it doesn't hiss you have a leak. My rigs without leaks will hold a vacuum for at least a week without the engine running.

diesel don

I know that each time i start the truck I can hear one of the vacuum servoes move from defrost, which is its default position. That would mean that there is no vacuum being held in reserve, it has always done this even after they replaced the vacuum pump at 38,000 because it was leaking oil not vacuum.

Ramdriver15

i noticed that the valve covers are spraying oil everywhere



i have not had any more oil come out the blowby tube, but i have had increased oil being pushed out the valve covers, would this be cause by a vaccumm leak?