are my rings gone? - TriStateTuners.com :: Home of Tristate Auto Enthusiast

240sxDann · 12-22-2006, 12:12 AM

I was driving to lunch today, and on the way there, my car was running fine, not smoking or anything. I pull into burger king and get on it a wee bit across the parking lot and shoot a huge cloud of blue smoke, shut the car off, ate, and left, but when I left it wasn't smoking anymore. wtf? Any ideas? Isn't it kinda weird for it to do that once and then stop?

**auk113** · 12-22-2006, 02:08 AM

white smoke = HG
black smoke = rings

yellow2000S/R · 12-22-2006, 02:11 AM

Quote:

Originally Posted by auk113

white smoke = HG
black smoke = rings

Wrong...

White smoke = HG
Black smoke = running rich
Blue smoke = rings

Action Park · 12-23-2006, 01:24 AM

White- HG, rich(usually under no load), huge amount of burnt oil(like when an oil ring breaks or turbo seal blows)
Black- rich under load
Blue under load only- worn rings/cyl wall
Blue under decel only- Valve guides
These last two are commonplace, but not the rule. Leakdown test maybe?

420sx · 12-23-2006, 02:25 AM

Do a compression or leak down test. If you do a compression test and once cylinder is low, add a cap full of oil in the spark plug hole. If it is your rings, the numbers for that cylinder should jump up.

TurboTagTeam · 12-23-2006, 02:40 PM

If you feel air comming out of your valve cover then your rings are toast.

Nors · 12-24-2006, 11:13 PM

Quote:

Originally Posted by Action Park

White- HG, rich(usually under no load), huge amount of burnt oil(like when an oil ring breaks or turbo seal blows)
Black- rich under load
Blue under load only- worn rings/cyl wall
Blue under decel only- Valve guides
These last two are commonplace, but not the rule. Leakdown test maybe?

That about sums it up. And blue smoke on start up is also valve seals (I am assuming you meant that with valve guides).

12-22-2006, 02:08 AM	#2
auk113 Tri-State Post Whore Join Date: Jan 2005 Location: Feastervilly/NE Philly Member #89 iTrader: (1)	white smoke = HG black smoke = rings __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

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12-23-2006, 01:24 AM	#4
Action Park Tri-State Addict Join Date: Oct 2006 Location: The Fugue Member #2802 My Ride: bug and a rabbit iTrader: (0)	White- HG, rich(usually under no load), huge amount of burnt oil(like when an oil ring breaks or turbo seal blows) Black- rich under load Blue under load only- worn rings/cyl wall Blue under decel only- Valve guides These last two are commonplace, but not the rule. Leakdown test maybe?

12-23-2006, 02:25 AM	#5
420sx Tri-State Post Whore Join Date: Oct 2006 Location: Warrington, PA Member #2811 My Ride: '98 240sx, 98 Impreza L, 00 SV650 iTrader: (5)	Do a compression or leak down test. If you do a compression test and once cylinder is low, add a cap full of oil in the spark plug hole. If it is your rings, the numbers for that cylinder should jump up.

12-23-2006, 02:40 PM	#6
TurboTagTeam Tri-State Post Whore Banned Join Date: Mar 2005 Location: Cell Block F Member #275 My Ride: constantly changes iTrader: (2)	If you feel air comming out of your valve cover then your rings are toast.