Re: Oil blowing out of breather
[Re: Challenger 1]
#1704037
11/29/14 03:43 PM
11/29/14 03:43 PM
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Joined: Feb 2003
Posts: 2,138 tucson az
frank
OP
top fuel
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OP
top fuel
Joined: Feb 2003
Posts: 2,138
tucson az
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Quote:
Can you post a picture of the passenger side valve cover?
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Re: Oil blowing out of breather
[Re: Cab_Burge]
#1704042
11/30/14 12:26 PM
11/30/14 12:26 PM
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Joined: Oct 2005
Posts: 4,945 WI
Dcuda69
master
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master
Joined: Oct 2005
Posts: 4,945
WI
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Quote:
Quote:
This topic has been beat to death over the years on here. PCV valves are very helpful on street engines to help ventilate the crankcase. PCV valves flow max amounts at low vacuum(wot) conditions. They flow less at closed throttle(high vacuum) conditions....check it out!
https://www.google.com/search?q=pcv+valv...mp;ved=0CCQQsAQ
Me thinks you have the flow backwards, maximum at idle to part throttle, no or almost no flow at WOT that is according to all the vacume gauges I've used over the years
Take a look at the link I posted. I understand vacuum drops under load....however the flow through the valve increases because of spring tension. They do that because,as you know, the engine produces more blow-by under load. I have posted pics of the flow through the valve on numerous occasions, I just don't have them on this pc. The link has many of the same pics.
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Re: Oil blowing out of breather
[Re: Cab_Burge]
#1704043
11/30/14 02:58 PM
11/30/14 02:58 PM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
Oil is blowing out the breather located in the left valve cover. Its enough to puddle on the floor after I drive the car for about 5 or more miles. What is causing this and how do I fix it?
Crankcase pressure is the only reason that oil will be blown out of the breather caps Two possible causes, possibly a combination of both. First one is a plugged PCV valve , the other is bad ring seal. Remove the breather cap and PCV and start the motor up, let it get warmed up and then revved the motor up from idle to around 4000 RPM several times rapidly, if the smoke from the valve covers increases each time you rev it up it is blowby Let us know what you find, also has this motor set for a long time before you started driving it? A very simple way to check the PCV valve is to put your finger over the hole in the bottom with the motor running, if the idle speed decreases it is working, your plugging a metered vacume leak If it doesn't change the idle speed it, the PCV valve or hose, is plugged up Let us know what you find
bad rings or burned pistion... ask me how I know. Like mentioned you need a leak down. sorry
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Re: Oil blowing out of breather
[Re: Dcuda69]
#1704044
12/01/14 12:52 AM
12/01/14 12:52 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Re: Oil blowing out of breather
[Re: challengermike]
#1704045
12/01/14 02:33 AM
12/01/14 02:33 AM
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Joined: Jul 2012
Posts: 216 E. Okla line
m88mark
enthusiast
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enthusiast
Joined: Jul 2012
Posts: 216
E. Okla line
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Quote:
You can get a twist in pcv valve that looks like a breather, autoparts stores sell them or get a different grommet for the blockoff grommet you have on the pass side valve cover.
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