new jeep blow by question
#1
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Model: Cherokee
new jeep blow by question
well i got my first Cherokee i traded some of my junk for it and 400 bucks. the guy that had it put 33's on it and i think it has a couple inch lift and he cut the fenders all up hopefully i will be able to fix them.
the main problem is that it had oil all over the engine the front vent tube on the valve cover going to the air filter was broke and was blowing oil like crazy. i took the valve cover off and the PCV valve was all carboned up i tried cleaning it and got the little hole unclogged in the valve but is the PCV valve have something in it that is suppose to open b/c min don't so i am thinking i am going to have to have a new valve cover. also does anyone have any part numbers i need all the vaccum hoses too.
the write up on off-road.com says it is for 1987-1990 Cherokees and the hose goes into the air box in a different place so i think the parts won't fit.
my jeep is a 1994
here are some pics
here is the PCV valve
the main problem is that it had oil all over the engine the front vent tube on the valve cover going to the air filter was broke and was blowing oil like crazy. i took the valve cover off and the PCV valve was all carboned up i tried cleaning it and got the little hole unclogged in the valve but is the PCV valve have something in it that is suppose to open b/c min don't so i am thinking i am going to have to have a new valve cover. also does anyone have any part numbers i need all the vaccum hoses too.
the write up on off-road.com says it is for 1987-1990 Cherokees and the hose goes into the air box in a different place so i think the parts won't fit.
my jeep is a 1994
here are some pics
here is the PCV valve
#2
CF Veteran
Yuck. Replace or thoroughly clean the valve cover and get a new PCV valve. You should hear a rattling when you shake it, if you don't its all mucked up in there. I'd replace it with a freshie anyway with the way that old port looks.
#3
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ok thanks for the reply and if i go to advance auto or auto zone and get a valve cover it will come with a PCV valve already in in right? and should they have the vaccum hoses that come out of the valve cover mine are all dry rotted
also off topic but this thing keeps logging me out every time i reload the page any one know why like after i post this and the page loads i will be logged out i have to keep logging in
also off topic but this thing keeps logging me out every time i reload the page any one know why like after i post this and the page loads i will be logged out i have to keep logging in
#4
CF Veteran
I wouldn't spend the money on a new valve cover unless it is cracked or gouged around where it is supposed to seal. Get two cans of brake cleaner and just spray the heck out of it and scrub it down, it'll be like new in a few. If you still choose to get a new one, I don't think they come with new PCV valves, that is something you'll need to purchase separately as well as the rubber grommet that the PCV valve sits into. By the looks of everything else on there, yes, I would replace the hoses running to and fro as well as cleaning/replacing the vac line that runs from the opposite end of the valve cover. When you're all done you might jet some seafoam or TB cleaner through there just to clean out any other gunk in the system. As for the logging issues, make sure you have cookies enabled in your web browser and your add-ons isn't auto-purging after each page view. Might be an antivirus integration as well. If you're using IE try Firefox or Opera, they can be less irritable.
#6
CF Veteran
Nah, it should sit right on top of your valve cover also acting as a 90° angle to route the hose back to the intake. Tug on that thing and it should separate from your valve cover. There will be a rubber grommet which should also come loose from the plastic valve cover. This is the way it is on my XJ, I wouldn't think yours would be too different but it could be. When you go to the auto store, ask for a new valve cover to see what it looks like compared to yours.
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#8
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here is what my cover looks like i doesn't have a PCV valve from the way i understand but i checked the hoses that hook to the back and they are 4 sure clogged so i am going to replace them. the elbows on the valve cover are hard and i don't know if i can pull them out and replace them or not.
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