PCV help?

[wedged]

Originally Posted by olds

PCV rids fumes from the crankcase, EGR does the same for exhaust.

EGR does not "rid fumes". It reduces combustion temps to reduce the emission of oxides of nitrogen, aka NOx.

[olds]

Originally Posted by wedged

EGR does not "rid fumes". It reduces combustion temps to reduce the emission of oxides of nitrogen, aka NOx.

Yes it does, it recycles gases or fumes, what word you give it matters less.

[GregWeld]

I have a 427 cubic inch small block -- and only a breather in one valve cover... I've run the living crap out of it - including 6000 rpm redline run in overdrive... and only ever get just a drop or two out of the breather from the hot oil fumes... but NEVER a dipstick blown out of the tube...

Sounds to me like something else is going on... I'd be doing a leak down test on that motor...

While I totally agree that it should have a PCV installed into the base of the carb or directly to the intake manifold ----- that sounds to me like really excessive crankcase pressure.

[wedged]

ah, bliss.... you just have to love it.

[olds]

Originally Posted by wedged

ah, bliss.... you just have to love it.

Is that directed toward me?? look guy, I'm not the one who thought an EGR valve is directly related to exhaust temperatures. It's a friggin valve.

And yes, if there is no PCV valve on an engine that should have one, it will have all kinds of hard running symptoms. But don't take my word for it cuz I'm young

[wedged]

Check into it and you'll see that it's not what "I think" EGR is for, but what it actually is for.

[olds]

Originally Posted by wedged

Check into it and you'll see that it's not what "I think" EGR is for, but what it actually is for.

Okay, just give it up are you serious? It recirculates exhaust gases. It has no control over temperature whatsoever, that is the result of having the valve

[GregWeld]

FIGHT!

LOL

The whole thread wasn't about EGR -- it's about PCV and it's use or lack thereof...

Now you two go back to your rooms and don't come out until you can be nice!!

[GregWeld]

Originally Posted by olds

Okay, just give it up are you serious? It recirculates exhaust gases. It has no control over temperature whatsoever, that is the result of having the valve

@ OLDS

I think you needed to do a bit of research on the subject BEFORE starting a cat fight... LOL

I love stuff like this - because it causes me to go out and RESEARCH the subject... to my surprise (NOT!) I usually learn something in the process.

[BritishGreen68]

Originally Posted by wedged

Check into it and you'll see that it's not what "I think" EGR is for, but what it actually is for.

5 seconds on Google----
The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. This results in a cooler, more complete burn of the fuel which decreases you car's noxious emissions by prohibiting the formation of some harmful gases.
The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine. The exhaust your EGR valve recirculates also prevents the formation of Nitrogen related gases. These are referred to as NOX emissions, and are a common cause for failing emissions testing. Unfortunately, your EGR valve can get stuck, causing NOX gases to build up. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on accelertaion.