X-pipe and Crankcase evac system
Thread Starter
Melting Slicks
Joined: Nov 2001
Posts: 2,659
Likes: 7
From: Katy (Houston) TX
CI 7-8 Veteran
X-pipe and Crankcase evac system
Do x-pipes and a crankcase evacuation system not mix well? Car has been running fine. Install crankcase evacuation system....still running fine. Just got back from putting in the x-pipe and it's smoking like a sonnovabitch now!!! Like, so bad it's embarrasing. Seems to do it worse when I'm decelerating and even smokes a bit just sitting at a light.
Please help!
Please help!
Thread Starter
Melting Slicks
Joined: Nov 2001
Posts: 2,659
Likes: 7
From: Katy (Houston) TX
CI 7-8 Veteran
Re: X-pipe and Crankcase evac system (flynhi)
It's basically a PCV valve with a hose attached to it that goes into the exhaust just behind the collectors. It helps relieve crankcase pressure on high-pressured engines. Without it, the pressure builds up so much in mine that oil leaks start showing up.
You see them a lot on drag cars but not often on street cars.
You see them a lot on drag cars but not often on street cars.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: X-pipe and Crankcase evac system (tshort)
Mr. Short An evac system should only be sucking oil mist and blow bye.
So if you have blue smoke Do a leak down test and see if you have other problems.
So if you have blue smoke Do a leak down test and see if you have other problems.
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: X-pipe and Crankcase evac system (gkull)
Has the oil consumption increased since the install of the Crankcase Evac System?
Thread Starter
Melting Slicks
Joined: Nov 2001
Posts: 2,659
Likes: 7
From: Katy (Houston) TX
CI 7-8 Veteran
Re: X-pipe and Crankcase evac system (tshort)
I think I may have solved it. I had just put on a chrome brake master cylinder cover on yesterday. Got up under the car and noticed fluid running down the crank evac hose on drivers side. Turns out, the fluid is brake fluid that was seeping thru the master cylinder cover. So it looks like somehow the brake fluid was seeping in right where the crank evac hose meets the tube in the header collector and I was burning brake fluid. I put back the old cover on and I'll have to wait until tomorrow to test. Wish me luck.
Racer
Joined: Apr 2003
Posts: 486
Likes: 0
From: Point Pleasant NJ
Re: X-pipe and Crankcase evac system (tshort)
Haha... I hear you travis... I have one of those damn chrome covers (previous owners choice) on my mc and its tricky to get it to seat up just right... plus maybe I am on and off the brakes a little to fast sometimes... aint nuttin wrong with that though.
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Le Mans Master
Joined: Aug 2000
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From: Austin TX
Re: X-pipe and Crankcase evac system (tshort)
I had the same problem a while back. I solved it by adding a second rubber gasket and slightly bending the wire hoops that tension the cover down.
The chrome cover from GM fits much better than other aftermarket covers.
The chrome cover from GM fits much better than other aftermarket covers.
Thread Starter
Melting Slicks
Joined: Nov 2001
Posts: 2,659
Likes: 7
From: Katy (Houston) TX
CI 7-8 Veteran
Re: X-pipe and Crankcase evac system (flynhi)
Well, after the test run I found I'm not so lucky. It still smokes. Actually, I was fooled for a while because aparently it only smokes when the engine is warm. It doesn't smoke upon first startup.
I checked the oil level and it actually seems a little high. I must have put a little too much in last time and checked it before it all drained down.
Is it possible that the smoke is coming from having my oil level too high and more oil than normal is blowing out the valve cover vents? With the exception of some more carb tweaking, the engine seems to run fine.
I checked the oil level and it actually seems a little high. I must have put a little too much in last time and checked it before it all drained down.
Is it possible that the smoke is coming from having my oil level too high and more oil than normal is blowing out the valve cover vents? With the exception of some more carb tweaking, the engine seems to run fine.
Drifting
Joined: Jan 2002
Posts: 1,484
Likes: 0
From: Northampton Ma
Re: X-pipe and Crankcase evac system (tshort)
I had the same problem in my old motor Travis, and it was because I added too much oil. I let it burn it off and it soon there was no more smoke :crazy:
Racer
Joined: Apr 2003
Posts: 486
Likes: 0
From: Point Pleasant NJ
Re: X-pipe and Crankcase evac system (Ryan77)
I wouldn't jut let it burn out especially depending on how much is too much. Just drain off a little from the pan run your car a good time/distance and see what its all got to say.
I don't know you sure your headers still dont have some brake fluid on em. Seems to me the engine would be darn close to burning up oil from the get go if it was the evac system. What kind of lines does it use and where does it hook into the ex. pull?
I don't know you sure your headers still dont have some brake fluid on em. Seems to me the engine would be darn close to burning up oil from the get go if it was the evac system. What kind of lines does it use and where does it hook into the ex. pull?
Thread Starter
Melting Slicks
Joined: Nov 2001
Posts: 2,659
Likes: 7
From: Katy (Houston) TX
CI 7-8 Veteran
Re: X-pipe and Crankcase evac system (AlwaysWave)
I cleaned the brake fluid off real well and even re-did the connection with some teflon tape. Yes, the valve covers have baffles. I'm going to see if I can drain some of the oil out without making a huge mess and take it from there. I'll let you guys know what happens in case anyone else is possibly experiencing something similar.
I don't have any pics of the system but it's the same one that Olivier (GrandSportC3) put on his and he posted a few pictures.
:cheers:
I don't have any pics of the system but it's the same one that Olivier (GrandSportC3) put on his and he posted a few pictures.
:cheers:
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Re: X-pipe and Crankcase evac system (tshort)
Do x-pipes and a crankcase evacuation system not mix well? Car has been running fine. Install crankcase evacuation system....still running fine. Just got back from putting in the x-pipe and it's smoking like a sonnovabitch now!!! Like, so bad it's embarrasing. Seems to do it worse when I'm decelerating and even smokes a bit just sitting at a light.
Please help!
Please help!
BTW - there shouldn't be a PCV valve in the breathers.. Other than foam - there should be nothing else in them breathers...
[Modified by GrandSportC3, 4:27 PM 12/22/2003]
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Re: X-pipe and Crankcase evac system (tshort)
Well, after the test run I found I'm not so lucky. It still smokes. Actually, I was fooled for a while because aparently it only smokes when the engine is warm. It doesn't smoke upon first startup.
I checked the oil level and it actually seems a little high. I must have put a little too much in last time and checked it before it all drained down.
Is it possible that the smoke is coming from having my oil level too high and more oil than normal is blowing out the valve cover vents? With the exception of some more carb tweaking, the engine seems to run fine.
I checked the oil level and it actually seems a little high. I must have put a little too much in last time and checked it before it all drained down.
Is it possible that the smoke is coming from having my oil level too high and more oil than normal is blowing out the valve cover vents? With the exception of some more carb tweaking, the engine seems to run fine.
