Valve Cover Vacuum chambers - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 05-17-2010, 08:40 PM   #1
Senior Member
Thread Starter
iTrader: (18)
 
Join Date: May 2008
Location: Big Bear Ca
Posts: 990
Total Cats: 8
Default Valve Cover Vacuum chambers

Just wondering by chance, how important is it to seal the Valve Cover Vacume chambers?

If someone was stupid enough to just screw these on without sealing them, would oil get it there and get sucked into the intake manifold. Perhaps causing white smoke, really poor driveability, and high oil consumption?

Last edited by dstn2bdoa; 05-18-2010 at 02:18 PM.
dstn2bdoa is offline   Reply With Quote
Old 05-17-2010, 08:48 PM   #2
Elite Member
iTrader: (12)
 
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,868
Total Cats: 66
Default

Slightly possible, though I never had any problems when I opened the baffles to clean them out and installed them without using any sealant.

BTW... it's vacuum.

Sounds more like your valve seals..or PCV...or breather system.
Doppelgänger is offline   Reply With Quote
Old 05-17-2010, 08:58 PM   #3
Elite Member
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

I reinstalled them once without sealent and had lots of oil coming out. Every car is going to be different. Use sealant just to be safe.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 05-17-2010, 10:05 PM   #4
Senior Member
iTrader: (1)
 
Join Date: Mar 2008
Location: Cromwell CT
Posts: 1,106
Total Cats: 48
Default

well white smoke is coolant, if you were burning oil it would be blue. i dont think that not sealing them would cause a significant amount of oil to be sucked up
ctdrftna is offline   Reply With Quote
Old 05-18-2010, 01:55 PM   #5
Senior Member
Thread Starter
iTrader: (18)
 
Join Date: May 2008
Location: Big Bear Ca
Posts: 990
Total Cats: 8
Default

Thanks guys, this happened last fall. The garage just got warm enough to go work in it.

This was a junkyard motor, we replaced all the seals, oil pump, H2o pump, timing etc prior to putting it in. The new oil pump was defective, we ran the car through multiple <30 attempts to get oil pressure, prior to figuring out the OP was bad. Put new one in and everything was great for 200-300 miles. Then my wife drove it and all of a sudden then white/blue smoke, I'm bad at telling the difference. It burnt through 4 Q of oil in 200 miles, and ran like crap.

So this is what I'm considering easiest to hardest. Vacuum chambers filled up sucking oil into intake. Sealed them yesterday, vacuum lines were dry so thats probably not it.

Next I think I'll check TB see if it skipped a tooth. Check PVC. Check coolant, oil for HG issues.

Next is valves or rings. I know it could be from the dry starts trying to get the OP figured out, just cant figure out why I would get several hundred miles of strong service before symptoms showed up.

I have a built 01 block awaiting a head, but I was hoping to get this one easily fixed so I can install my walbro FP, injectors, MAP, and AEM, prior to the new motor. Don't want to be experimenting on the expensive stuff.
dstn2bdoa is offline   Reply With Quote
Old 05-18-2010, 02:02 PM   #6
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,239
Total Cats: 290
Default

Quote:
Originally Posted by dstn2bdoa View Post
would oil get it there and get sucked into the intake manifold. Perhaps causing white smoke, really poor driveability, and high oil consumption?
yes
m2cupcar is online now   Reply With Quote
Old 05-18-2010, 02:06 PM   #7
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

JasonC SBB is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Raleigh: Fiberglass headlight scope, 1.6L ECU, AFM, Hardtop latches, more bigmackloud Miata parts for sale/trade 13 09-22-2017 01:34 PM
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
2003 VVT Head/Valve Cover/Actuator/Coil Packs - Low Miles! - $250 StratoBlue1109 Miata parts for sale/trade 7 09-24-2015 04:50 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:44 PM.