PCV? Please Help Soon!
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Senior User
Joined: Aug 2001
Posts: 275
Likes: 1
From: Lexington Park, MD
PCV? Please Help Soon!
Hello everyone, got a problem I need help with. I went out a while ago to put my new K&N kit on, opened up my air filter box, and I found a heavily stained filter, an oil soaked breather filter, and a small puddle of oil sludge in the bottom half of the box. I pulled the box out, wiped it down, cleaned the vent hose for the crankcase which was in good condition. I then pulled the the PCV valve and its rubber hose out and inspected them. The valve was good, the hose is pretty dry rotted. So I put them back in, started the engine and let it idle down, but I was getting good suction from the valve when I put my thumb on it. I felt around the hose and the manifold fitting, but it all seemed good. Im at my wits end at the moment.
What else can cause this if my PCV system is checking good and what can I do? Thanks in advance. (Please help!)
Chris
91 F-150 XLT Lariat
302 Auto
True Duals
What else can cause this if my PCV system is checking good and what can I do? Thanks in advance. (Please help!)Chris
91 F-150 XLT Lariat
302 Auto
True Duals
Senior User
Joined: Mar 2002
Posts: 450
Likes: 0
From: Charter Oak, Iowa
PCV? Please Help Soon!
More than likely your engine is getting weak. The problem with vacuum crankcase evacuation is that when ring blow-by is the greatest (under load) then vacuum is the lowest. Essentially blow-by has overwhelmed the PCV to the point that the crankcase vapors are backing up into the airbox. Your truck will probably run fine for a long time yet but you'll need to keep an eye on those filters and clean/replace more often.
Randy
Randy
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Senior User
Joined: Aug 2001
Posts: 275
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From: Lexington Park, MD
PCV? Please Help Soon!
I sure appreciate your advice Randy. Im gonna do more research on ring blowby. From the very little I do know about it, I suppose I should expect it, cause my truck is gettin high in mileage, even though I do try to keep it pretty well maintained.
Would it not be smart to put a K&N filtercharger on now, or could it still be kept clean? Trucks gettin old, so Im tryin to do what I can to alleviate the stress till I gotta rebuild it.
Thanks again! Ive definitely been enlightened.
Chris
Would it not be smart to put a K&N filtercharger on now, or could it still be kept clean? Trucks gettin old, so Im tryin to do what I can to alleviate the stress till I gotta rebuild it.
Thanks again! Ive definitely been enlightened.
Chris
Thread Starter
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Senior User
Joined: Aug 2001
Posts: 275
Likes: 1
From: Lexington Park, MD
PCV? Please Help Soon!
I think that sounds like a plan. Im gonna put the filtercharger on tonight. Ill try and keep the posts updated on on how it affects everything. Your help is much appreciated.
Chris
91 F-150 XLT Lariat
302 Automatic
True Duals w/ Dynomax Super Turbos
Chris
91 F-150 XLT Lariat
302 Automatic
True Duals w/ Dynomax Super Turbos
