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post #1 of (permalink) Old 07-02-2001, 10:13 AM Thread Starter
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valve cover plug??

A while back I was looking at a jeep and it was really nice underneath the hood. In place of the check valves and hoses that come off the top of the valve cover there were 2 chrome plugs. Does anyone know what these are called and where to buy them? Is it ok for the jeep to plug them or does it need to get air?> thanks

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post #2 of (permalink) Old 07-02-2001, 10:17 AM
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Re: valve cover plug??

just a breather type filter. get them at autzone pep boys all these dudes carry them if it is a 258 do not plug the back one i tried that shot my dipstick out like a bullet.. i just shoved another pvc valve in there and tied it to the front one seems to work well..

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post #3 of (permalink) Old 07-02-2001, 10:22 AM
 
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Re: valve cover plug??

wait a minute, are you saying you ARENT supposed to plug the very rear hole in the valve cover of the 258? ? ? I have mine plugged with a pipe that goes into a mini-filter in the air filter housing.... hmmm.

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post #4 of (permalink) Old 07-02-2001, 10:24 AM Thread Starter
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Re: valve cover plug??

yeah right now the back one is connected to my k+n air filter, If I pick up a set of these do I plug the back of the air filter or leave it open. And yes this is a 258.

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post #5 of (permalink) Old 07-02-2001, 10:30 AM
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Re: valve cover plug??

I am saying i plug my off with a plug no plumbing running anywhere and it created a extreme amount of back pressure and the dipstick shot out ..

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post #6 of (permalink) Old 07-02-2001, 11:01 AM
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Re: valve cover plug??

DO NOT PLUG either hole.. they need to be able to breath.. usually the front is a pcv valve.. going to carb.. and the rear one is just a filtered opening.. ie. usually to the airfilter.. but you can put a small breather on it..
when you plug them.. it does built up pressure.. dipsticks shoot out.. rear main seals start leaking at an encrediable rate.. yada yada..

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post #7 of (permalink) Old 07-02-2001, 04:36 PM
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Re: valve cover plug??

That rear breather is putting oil into my air cleaner. Assuming I can't prevent it (my PCV was recently replaced), any nifty ideas to prevent the oil getting into the cleaner/carb?

... aside from the obvious disconnecting.

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post #8 of (permalink) Old 07-02-2001, 07:26 PM
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Re: valve cover plug??

get a jug.. ie. gatorade bottle or something.. fasten it to something in the engine bay.. and run the hose into it.. its a quick fix.. but to do the job right.. you should do a compression test.. and will more than likely need new rings....
do a search on this subject.. its been discussed plenty..

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post #9 of (permalink) Old 07-03-2001, 02:10 PM Thread Starter
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Re: valve cover plug??

Well I found the chrome breather things for the valve cover today at vip, but they were a Little bit larger than I expected.

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