I just recently hooked up a PCV valve and a breather to the air cleaner on my '71. Took it for 3 drives for a total of 45 minutes and a quart of oil disappeared.

I don't have any pictures of my setup right now. But before I hooked up the PCV valve after driving awhile the smell of hot oil would drift into the cabin, now it doesn't. I am wondering if I hooked something up wrong.

I hooked up the PCV valve in the passenger side valve cover to the front of my carb. I have an edelbrock carb. The breather is hooked up from the drivers side to the air cleaner.

Thanks,
Jay

 

Is there a baffle in the valve cover under the PVC?

I had a set of covers once that someone had just punched a hole and put the pvc in. When it got hot / rev'd it sucked in enough oil that it actually pooled in the intake manifold

Mooser

 

Factory setup is pvc on drivers side to carb, breather on passenger side to air cleaner.....either way should be ok. No leaks?, not burning any?...check your front carpet, I've know oil pressure gauge line can leak/break with the carpet backing (jute) absorbing all the oil.

 

You know, i doubt there is a baffle on under the valve covers.

Can you point me to a good supplier for those?

 

Detective scottyp99 is on the case! Hmmmm, let me look at the clues. It didn't use oil before, and now that a PCV system has been installed, it uses copious amounts of oil. Ah-ha! It's elementary, my dear Watson! I think that if we delve further into this conundrum, we will find that the new PCV system has something to do with the mysterious disappearance of the oil. The game is afoot!!

OK, enough fooling around, obviously you suspect the PCV system, too. If the car didn't have a PCV system before, and you would smell oil, it could be from a leak, but it could also be from oil misting out from around seals and such, due to crankcase pressure. The PCV system is relieving this pressure, by allowing the pressure to be sucked into the intake manifold, so you are no longer smelling the hot oil smell. But now, oil is disappearing. It's probably being sucked into the intake. Are you sure you are using the correct PCV valve? Have you done a compression test to check for excessive blow-by? Are you getting blue smoke out the tailpipes? Oil burns blue, that will be a tip-off that oil is being pulled into the intake. Check the plugs, are they oil soaked? Mooser has a good point, I have seen the same thing happen with an un-baffled PCV valve. Good luck!


Keep the shiny side up!
Scott