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Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
I have tons of white smoke billowing out of this 1986 Camaro Iroc-z 5.0L TPI.
My dad gave this car to me and I'm trying to diagnose the problems with it.
I just uploaded this video of the smoke on youtube so that someone might be able to help my diagnose it.
Hi Bmv5. What he said. Does it smell sweet? Does it smoke really really bad when revved? If it smokes blue most of the time I would pull one valve cover and see if the oil drain holes in the heads might be plugged with oil sludge. The rocker area on Chevys get gunked up from not changing the oil enough and when they do the oil piles up in the valve covers and makes them smoke. If the smoke is sweet smelling then you may have a blown head gasket or something similar. Hope it is just something simple. Might be as simple as needing an oil change. Good luck.
I have tons of white smoke billowing out of this 1986 Camaro Iroc-z 5.0L TPI.
My dad gave this car to me and I'm trying to diagnose the problems with it.
I just uploaded this video of the smoke on youtube so that someone might be able to help my diagnose it. 1986 Camaro Symptoms - YouTube
Looks like oil to me, a few things to check- are you sure you haven't over filled the oil? Like above said, pull covers to check that you don't have sludge blocking a port. If it's just at and after start up, it's likely valve stem seals which are known issues. If it's all the time you could have some worn rings.
It happens when it starts up and constantly when it is warmed up.
The more revv the more smoke.
The engine dies at 1500 rpm or lower.
I used a head gasket test kit and results show no head gasket leak.
It has set since 08/2014 without running however this symptom was happening during the last two months of it being a daily driver.
I'll check under the valve covers. I changed the oil and filter approximately 1 month before recording this video. This is the second start up since the oil change.
Oil was present on 1 spark plug so I did a compression test.
Compression is normal in each cylinder.
It smells like my grandpas smoker when he smokes and grills meat.
Could old/bad gas be a culprit?
Original catalytic converter & injectors.
Last edited by Bmv5; 05-04-2016 at 05:43 PM.
Reason: Correction
The motor has approximately 6 thousand miles on it.
Replaced the motor with a refurb in 2012 among other things such as-
Installed new o-rings and accessories on injectors in 2012 but haven't replaced any of the actual injectors.
New gaskets everywhere.
Replaced Distributor, cap, plugs, wires 2012.
Replaced all vacuum lines 2012.
Replaced pcv valve after this video (corroded plastic supporting valve).
Replaced EGR valve 2013(Couldn't find replacement sensor that screws in) EGR engine code is still on.
Replaced charcoal canister and filter 2012.
Replaced maf sensor, air filters, radiator in 2012.
Replaced smog pump 2009. (Locked up while driving)
Replaced alternator & batter 2009.
Replaced radiator fan & relay & thermostat, and installed dual front fans for overheating issues 2012.
Installed lower air baffle 2012.
Last edited by Bmv5; 05-04-2016 at 02:45 PM.
Reason: Additional information
Only thing I can think of to cause this problem would be an internal engine component
Injectors that are the originals on the vehicle
Gasoline that's 3 years old
or Catalytic converter which is also original.
Hi Bmv5. Is it knocking? The second vid sounds like knocking. You may have a burnt piston or a hole in the piston. Is it missing? Pull the oil filler cap while it is running and see if it puffs hard through the filler cap hole with the motor at idle. If it is missing ,find out which one and do a compression check on that cylinder. Does it backfire occasionally or when revved up? That could also point toward a hole in a piston. Just another guess. I had a 2.8 v6 fiero with a hole in the piston and it ran similar to that.
Are those darker ports wet? Looks like you are getting oil in your exhaust ports. I would also try to get that 3 year old gas out and get some fresh gas into it. Replace all the plugs and see what they look like when you run the motor again.
Yeah they are wet with what i can only assume to be oil. The old pcv valve was clogged and disgusting so i replaced it. Drained the old fuel out and changed the fuel filter put 3.5 gallons of new fuel in. I just got new spark plugs. When i put the new headers on I'll put the new plugs in and double check the wires.
04-10-2016, 05:17 PM
