white smoke... - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 01-17-2007, 01:03 AM   #1
Junior Member
Thread Starter
 
Join Date: Oct 2006
Posts: 257
Total Cats: 0
Default white smoke...

ok so i recently did my clutch and flywheel. replaced rear main oil seal and the front and rear tranny seals.

left it at a friends shop and they finished up the work and i picked the car up in the morning. mechanic said my oil wasn't good...so he changed it. i knew i was previously burning oil at maybe 1qt/500 miles. so i would check it and fill appropiately. i don't know what kind of oil he replaced it with but i was using mobil 1 10-30.

when i got the car back it drove fine for awhile. then the next day ny friend was following me and noticed white smoke on downshifts. then i noticed ALOT of white smoke while i was idling at a light.

the smoke is fairly white and doesn't evaporate right away. it sticks around alot.

while im driving no smoke, but as soon as i downshift and stop at a light it spews white smoke again.

i changed the headgasket about 4k miles ago, i don't know the milage on the engine, but the odometer reads 206k right now.

what do you guys think the problem is ? some ppl over on m.net were talking about changing between different oils and having problems adapting ?

any input is greatly appreciated....

Scott
shinobix is offline   Reply With Quote
Old 01-17-2007, 09:39 AM   #2
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

hows your oil drain and pcv setup?
Braineack is offline   Reply With Quote
Old 01-17-2007, 11:52 AM   #3
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

10 to 1 it's oil getting past the turbo oil seals.

do you use an inline restrictor on the oil inlet? what kind of turbo?
y8s is offline   Reply With Quote
Old 01-17-2007, 12:57 PM   #4
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

yep compressor seal. mine was flooding directly into the motro 2 quarts in 10 miles. started at high boost. 10+psi and got worse from there on.
magnamx-5 is offline   Reply With Quote
Old 01-17-2007, 03:35 PM   #5
Junior Member
Thread Starter
 
Join Date: Oct 2006
Posts: 257
Total Cats: 0
Default

oil drain is to the left side of the block on the greddy return. i recently installed a oil catch can.... i think this might b screwing with it. the catch can is connected to the pcv valve and the breather outlet on the right side of the valve cover.

the turbo is a 16g greddy, i have the feed line put into the stock input...

could the turbo be going out and need a rebuild ?
shinobix is offline   Reply With Quote
Old 01-17-2007, 03:45 PM   #6
Senior Member
iTrader: (14)
 
brgracer's Avatar
 
Join Date: Nov 2004
Location: Ambler, PA
Posts: 1,275
Total Cats: 1
Default

I'd also check around the car very carefully for any very small oil leaks, particularly around the oil drain area. I had white smoke only with hard acceleration and found a small leak from the oil return line would splash back and hit the exhaust and create smoke only with acceleration. Granted, it is different than your situation, but something to checkout.
brgracer is offline   Reply With Quote
Old 01-17-2007, 04:38 PM   #7
Junior Member
Thread Starter
 
Join Date: Oct 2006
Posts: 257
Total Cats: 0
Default

just went outside to mess with the car... i think i figured it out.

i installed a catch can the other day right.... it was some generic one. 250mL 2 outlets. 9mm hoses... not vented or anything on top just two hoses coming out of it.

i connected one to the right side of the valve cover and one to the pcv valve. then i put a vaccum nipple on the throttle body outlet.

so basically there was no way for the valve cover pressure to be released right... and the stuff that normally blew into the throttle body to get burned off in the engine later was being totally recirculating maybe even pressurizing the valve cover.....

im gunna go take the car out for a hard run... ill let you guys know what i find.

Scott
shinobix is offline   Reply With Quote
Old 01-17-2007, 04:49 PM   #8
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

take a pic. that doesn't sound right.

a catch can on a system that doesn't even use a breather line really aint going to do much. if anything you are robbing the crankcase of any vacuum and your oil drain line is suffering and backing oil up into the turbo.

a properly plumbed PCV system will allow vacuum to be sucked out of the crackcase. the turbo drain line is affect, as it is at the bottom of the crankcase. removing vacuum from the drain line means more gravity/effort is required to drain oil from the turbo. and since you have about 5' of return you are suffering from plumbing the breather line improperly (or at all), and again so by attaching the same line to the pcv.

You want to install the thing between the breather line and the intake. So as you pull air out of the crankcase it catches any oil that may go itno the intake. Put the PCV back to OEM plumbing (verify functioning). I bet your smoke goes away.

Braineack is offline   Reply With Quote
Old 01-17-2007, 05:46 PM   #9
Junior Member
Thread Starter
 
Join Date: Oct 2006
Posts: 257
Total Cats: 0
Default

i just got back from driving the car around. i definitely thing it was the way i plumbed the catch can. as soon as i returned the pcv to the original plumbing it stopped smoking.

i think you were right scott, with the pressure built up on the crankcase my oil return for the turbo was having one hell of a time getting rid of all the oil. thanks again and i hope others can benefit from my errors and learn from them because i sure am

Scott
shinobix is offline   Reply With Quote
Old 01-17-2007, 05:47 PM   #10
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

you're just lucky your dipstick didn't shoot out....that's no fun.
Braineack is offline   Reply With Quote
Old 01-17-2007, 06:59 PM   #11
Senior Member
 
Join Date: Dec 2004
Posts: 1,450
Total Cats: -1
Default

Man, when will they ever learn?
bripab007 is offline   Reply With Quote
Old 01-17-2007, 07:28 PM   #12
Junior Member
Thread Starter
 
Join Date: Oct 2006
Posts: 257
Total Cats: 0
Default

lol never ! neeeeeeeeeeeeeeeeeverrrrrrrrrrrrrr. well i just hope this helps other ppl out in the future. learn form my mistakes people !
shinobix is offline   Reply With Quote
Old 01-17-2007, 08:13 PM   #13
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Leave a decent dent in your hood when it does shoot out or does it ususally just hit some cross bracing?
cjernigan is offline   Reply With Quote
Old 01-17-2007, 08:34 PM   #14
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,438
Total Cats: 84
Default

It's not so much the dipstick as the fountain of oil behind it. Remember the old films on bringing in an oil well?
olderguy is offline   Reply With Quote
Old 01-17-2007, 09:41 PM   #15
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

I would die laughing if i could see that happen with someones hood up.
Kind of like that thread "You know you own a DIY turbo miata"
1. When you can shoot your dipstick 20 ft with the press of the throttle.
cjernigan is offline   Reply With Quote
Old 01-17-2007, 10:03 PM   #16
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

Quote:
Originally Posted by cjernigan View Post
I would die laughing if i could see that happen with someones hood up.
Kind of like that thread "You know you own a DIY turbo miata"
1. When you can shoot your dipstick 20 ft with the press of the throttle.

even better....start the car with the oil feed resting on your windshield....see how much you like cleaning up that mess
Braineack is offline   Reply With Quote
Old 01-17-2007, 10:50 PM   #17
Junior Member
Thread Starter
 
Join Date: Oct 2006
Posts: 257
Total Cats: 0
Default

ahahha lol. see people will learn from random dumb things i do. i serve a purpose on miataturbo.net

ill let you guys know what happens next when i try to install a walbro next week. LOL

headlines read.. "....man is covered in gasoline and proceeded to smoke a cigarette while neighboors watched in horror..."
shinobix 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
First gen (white) megasquirt pnp 90-93 Miata firmware reflash Johnny Tater MSPNP 1 09-27-2015 01:38 AM
Rear finish panel white mint condition gdoehl Miata parts for sale/trade 1 09-21-2015 01:54 PM
New here, saying hi, here's what I'm workin with. SuperSneakySecretSquirrel Meet and Greet 5 09-06-2015 09:30 PM


Thread Tools

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 03:49 AM.