Why is my 2000 Pontiac Grand Am 2.4l blowing oil up into my intake?

Tiny
IOWAN86
  • MEMBER
  • 2000 PONTIAC GRAND AM
  • 175,000 MILES
My 2000 pontiac grand am 2.4l is blowing oil up into my intake and is going through alot of oil. I can not find the pcv valve to check it either. Any suggestions? And the pcv valve is not on the left front of the valve cover. I have looked and the little silver pcv is not there.
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Wednesday, February 22nd, 2012 AT 2:46 AM

12 Replies

Tiny
BILLYMAC
  • EXPERT
Pcv is located in front of the engine follow the hose from valve cover down. Most likely prob is valve seals are bad letting oil leak through into the intake
Locate the PCV valve on your Grand Am. You'll find the PCV valve on the right side of the front valve cover. You'll need to remove the valve in order to troubleshoot it to determine if you need a replacement. To remove, pull the PCV valve out of the cover and detach the hose.

Test the old PCV valve to determine if it needs replacing. Blow air through it in order to see if it is clogged. If it does not seem to ventilate, then you'll need to install a new valve.
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Wednesday, February 22nd, 2012 AT 2:54 AM
Tiny
IOWAN86
  • MEMBER
I followed the hoses and I still did not find the pcv valve there? Is it hidden behind anything? I did just buy this car could have someone took it out and just put a hose there where it is suppose to be? And you say probably bad valve seals, do you mean the internal valves, if so is there any additives that can be added to help this problem or is a tear down needed?
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Wednesday, February 22nd, 2012 AT 3:01 AM
Tiny
BILLYMAC
  • EXPERT
What is that black box in the middle and towards the front?
That is an oil vapor seporator. It has the equivalent funtion to a PCV valve found in most other engines.

This engine has a oil vapor separator same funtion as pcv located in the middle and towards the front little black box
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Wednesday, February 22nd, 2012 AT 3:07 AM
Tiny
IOWAN86
  • MEMBER
Why cant I look up this part on the autozone web site, if the oil vapor separator was bad could it cause oil to blow by into the intake hose?
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Wednesday, February 22nd, 2012 AT 3:15 AM
Tiny
BILLYMAC
  • EXPERT
Yes it is possible I don't have a clue why you can't look it up should be under crank case ventilation
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Wednesday, February 22nd, 2012 AT 3:21 AM
Tiny
IOWAN86
  • MEMBER
Hmm would it be the vapor canister? I even checked the oreilly's web site and that is the only thing I could come across but it dont look like it exactly.
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Wednesday, February 22nd, 2012 AT 4:00 AM
Tiny
BILLYMAC
  • EXPERT
No not really the vapor canister would be a vacum canister I would get a part number from the dealer parts and use that number to locate on aftermarket site. Well after a little research this part is only avail through a dealer. But you can take it apart and clean it out with carb cleaner no moving parts inside no paper just baffales.
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Wednesday, February 22nd, 2012 AT 4:12 AM
Tiny
IOWAN86
  • MEMBER
Ok. Well thank you for all the information and help!
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Wednesday, February 22nd, 2012 AT 4:14 AM
Tiny
BILLYMAC
  • EXPERT
Yw
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Wednesday, February 22nd, 2012 AT 4:19 AM
Tiny
IOWAN86
  • MEMBER
One more thing is there any links to pictures or information on how to take this apart and clean it?
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Wednesday, February 22nd, 2012 AT 4:33 AM
Tiny
BILLYMAC
  • EXPERT
There are 100's of sites just search quad4infowithpic
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Wednesday, February 22nd, 2012 AT 1:29 PM
Tiny
BRASS2
  • MEMBER
I seen this posting and figured Id add what Ive found out about the issue. I have a Grand Am with the 2.4L Quad 4 in it that has the same issue with the oil vapor separator. I do not think you cant take it apart to clean it. Most likely you will not find it at a parts retailer, however I do know it is still available from GM Direct online or their dealerships. I believe it was around $45, I'm pretty sure the hoses don't come with it and it can be a pain to remove the old ones without damaging them. So if doing the replacement yourself take your time and be patient as I'm pretty sure the replacement ventilation hoses cost more than the separator itself. If you damage a hose it must be replaced with hose that is oil resistant, heater hose is not. If need be, places that repair and deal with heavy equipment sell oil resistant hose by the foot for a decent price but it obviously wont be preformed and may be troublesome to route.

If you do not wish to go through the trouble of replacing it, lack the ability or cant afford to pay a repair shop there is a simple method that will help prevent the oil from making it into the intake. Simply build yourself an "oil catch can" that can be put in line with the vent hose that attaches to the underside of the intake tube. The idea is to use a container in line to reduce the velocity of the vapor allowing it to settle. You will need to empty the container from time to time but it will help prevent your intake system from getting built up and/or fouling out plugs constantly. Just remember to small of a container wont slow the air velocity down enough to allow it to function. This will get you by till you can replace the vehicle if you plan to or get it fixed when you can afford to. If your not sure how to do this just Google "homemade/DIY automotive oil catch can" and you will find plenty of info on them.
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Friday, March 21st, 2014 AT 9:15 PM

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