Is this Oil or Fuel smoke?
This is a discussion on Is this Oil or Fuel smoke? within the Computer & Tuning forums, part of the LSx Technical Help Section category; Its hard for me to tell, the car had been running for at least 10 min cuz i too, it ...
03-07-2008, 10:25 AM #1
Is this Oil or Fuel smoke?98' SS Convertible Camaro-76k-Build # 1471, Cragar SS rims, RK SFC's, MAC Panhard, LSX Tune, Shaner S3,
SLP:short thro,Strut tower brace,fan switch
MTI Power induction kit,40 Series muffler,Pacesetter LT's + ORY,12 CD changer,3800lbs
03-07-2008, 02:28 PM #2
Looks blue enough to be oil, unless it's somehow being tinted by the color of the car in the video. Does it look like a slight blue tint to you in real daylight?
03-07-2008, 02:50 PM #3
- Join Date
- Apr 2006
- Indianapolis, IN
- 83, 87, 02 All WS6 T/As
I agree.. bad angle... are you losing oil? Is the car tuned?-Geno
1983 Black WS6 "WindCharger"
1987 Black WS6 "WS87"
2002 Black WS6 "Silver Streak"
Sold the other four f-bodies
03-07-2008, 03:15 PM #4
Yeah it looks to be bad valve seals and or guides.
You notice how the strong puff comes after you let off the throttle.....?
When you back off the throttle that causes the vacuum to spike and go high so if the guides have excessive wear clearance it will always smoke when you let off the throttle.
What weight oil are you running?
Are the heads tired?Don't be afraid of the bottle!!! Be afraid of your tune!!!
03-07-2008, 03:41 PM #5
idk if the heads are spent or any of that its only got 73k on it, i got 5w30 royal purple in it, but the fuel in it is also old and there's like 32 oz of fuel stabilizer in there too
i've never noticed any oil consumption what so ever before i put it away for the winter, so i would have to say it shouldnt be anything permanent? idk, this scares me a bit, it did look blue to me tho
do you think the fuel stabil and old gas might have anything to do with it?
and the car is not tuned either
03-07-2008, 03:59 PM #6
also if you look again, it smokes right when i hit the gas not after, i considered what you said and it looks as tho it smokes right when i give it gas
please keep the info comin
03-08-2008, 05:21 AM #7
You could also check the PCV valve and see if it's hung open. I know that the '98s had a different PCV routing than the following years, but I honestly don't know if that would make them more susceptible to pulling oil. I remember in the early days of these cars, guys were yanking the PCV and just running filters on the tube as a crankcase vent.
03-08-2008, 12:55 PM #8
eh i could check it, the current pcv has like 9k miles on it. i'm thinking it might be fuel tho, my battery went dead and it had only been running 10 min or so after i charged it, so i assume it'd run in safe / base mode, which would be rich so that no harm would be done, plus the fuel stabil in the fuel, idk...
03-08-2008, 02:02 PM #9
hmmm, it does look a little blue. hopefully its not a big problem. the car sounds alright.... how does it run? maybe a tune would help. that's what i'm doing this spring
03-08-2008, 03:29 PM #10
03-09-2008, 09:02 AM #11
^ ok i'll get right to that, once its back on the road again i'll take another vid and see if it is still doing it
03-09-2008, 09:55 AM #12
I have seen heads come in the shop that have under 50,000 with brittle ass valve seals. I think alot of it has to do with the oil used and driving habits.
When it is a city commuting car and doesn't really get up to temp in the majority of driving cycles it builds up contaminates in the oil and the valve covers that over time are damaging to gaskets and seals.................... No telling unless you had bought it new and knew the total history.
How much of that gas is in it? I would have a nice sale to a friend and get that shit out and fresh in with a nice oil change after the storage. And please if you don't do this already do your motor a favor and change the oil when it's hot NOT cold and God forbid NO FRAM FILTERS!!!
03-09-2008, 02:08 PM #13
yea when spring comes and its back on the road i'll change the oil and get rid of the gas, you think it'd hurt it if i burned the gas? The oil also only has like not even 1000 miles on it, and its a full synthetic...
03-09-2008, 03:10 PM #14
As for the oil I would change after putting a 100 miles or so on it.
03-09-2008, 03:19 PM #15
so ya still think its oil tho huh?....
03-09-2008, 03:24 PM #16
03-09-2008, 03:58 PM #17
when do you think it smokes, to me it seems it smokes right as i hit the gas, you were saying it was after i hit the gas...
and if it was oil wouldn't it smoke always
03-09-2008, 04:42 PM #18
03-09-2008, 05:23 PM #19
i'm not disagreeing that what your saying is incorrect (about vacuum and that stuff) but after watching the vid 10+ times , i am positive it is not delayed, that the smoke is produced when i hit the gas, this is how i know: when ever i let of the gas at all , you can hear the "back pressure" or what ever you call it, its the really garggly / chopy part of the exhaust note, the smoke comes out before the sound, which leads me to believe that the smoke is being produced when the throttle is increased
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