Problem
Thread Starter
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Problem This is a problem that I have had for a while and it's pissing me off.
I have a major oil burning problem with my Engine..it's sputtering pure oil droplets out the exhaust and the Plugs are completely drenched if you pull them out of the engine right after shut down..this is for all 8 Cylinders.
The bottom-end is solid, it barley moved on a leak-down check and from my knowledge if something was wrong with the rings the Cylinders wouldn't be wet with oil..it would burn it up.
I pulled the Intake and looked down the Ports..on every Valve that was closed there was a nice pool of Oil. I don't have a PCV System hooked up to the Intake so there is nothing there to let Oil in.
It burns Oil on the decellerarion ever time I let off of it, even if I'm cruising. Coming down hard from high RPM's it smokes everything out behind me.
I have replaced the Valve Seals and I still have this problem so the only other thing that I can think would be to pull the Heads and have the Valve Guides replaced.
I am out of answers here and I have no fckn clue what it could be cause nothing makes any sense..everything so far checks out. All I know is it's something in the Heads and it's irratating the **** out of me.
If anyone has any input I would greatly appreciate it.
I have a major oil burning problem with my Engine..it's sputtering pure oil droplets out the exhaust and the Plugs are completely drenched if you pull them out of the engine right after shut down..this is for all 8 Cylinders.
The bottom-end is solid, it barley moved on a leak-down check and from my knowledge if something was wrong with the rings the Cylinders wouldn't be wet with oil..it would burn it up.
I pulled the Intake and looked down the Ports..on every Valve that was closed there was a nice pool of Oil. I don't have a PCV System hooked up to the Intake so there is nothing there to let Oil in.
It burns Oil on the decellerarion ever time I let off of it, even if I'm cruising. Coming down hard from high RPM's it smokes everything out behind me.
I have replaced the Valve Seals and I still have this problem so the only other thing that I can think would be to pull the Heads and have the Valve Guides replaced.
I am out of answers here and I have no fckn clue what it could be cause nothing makes any sense..everything so far checks out. All I know is it's something in the Heads and it's irratating the **** out of me.
If anyone has any input I would greatly appreciate it.
Thread Starter
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
I replaced the Valve Seals..just did them and the problem remains the same as it was before. I mentioned that above..
Basically I'm trying to figure out if I did something wrong or installed something incorrectly for this to be happening..
Basically I'm trying to figure out if I did something wrong or installed something incorrectly for this to be happening..
Last edited by the_merv; Jun 5, 2009 at 01:10 AM.
When did you do the valve seals? I assume you did them all, both sides?
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I was going to do that, but didn't want crank case pressure to build up. Maybe I'll try with the breathers.
You have pics of yours?
Thread Starter
Joined: Mar 2006
Posts: 21,019
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From: The Beach...
Yes the Intake it totally blocked off from anything, all that is there is jsut the Throttle Body.
Here is a pic..
This is the old setup.. the passengers side is blocked off and the drivers side now has a Breather and everything is blocked off.
Here is a pic..
This is the old setup.. the passengers side is blocked off and the drivers side now has a Breather and everything is blocked off.
Almost all my seals were bad. So bad that the valves wouldn't even stay in the guide if the head was turned over, it would just fall out.
The only symptom I had was a massive trail of bluish-white smoke when I stomped the gas pedal from a roll, like say a 40-70mph roll. When I nailed it, the trail would begin and then slowly clear up IF I stayed on the gas pedal.
But the car would not smoke at all otherwise. Not at idle, not at start-up, not when I revved it in "park", and not when I stomped the gas from a dig. Only from a rolling, steady cruise speed above 40mph.
The ONLY thing I did was have the valve seals replaced and the smoke 100% stopped.
I think some people might get that smoke when they let off the gas after a run if the crankcase pressure is too high for some reason. Not sure though.
Basically, when you stomp the gas pedal from a rolling steady cruise speed, that instant drop in pressure in all 8 cylinders sucks HARD....it pulls air from everywhere, but we hope it only comes in through the intake. But when the valve seals are bad it sucks oil in that is under the valve covers, right into the cylinders. But after you're accelerating that pressure starts to equalize gradually and the oil can't get sucked through anymore, thats why it clears up slowly as you continue accelerating.
I'd say there's a problem with the "new" seals, whatever it might be.
ALSO........ Its very bad to have raw fuel coming out of the tail pipes, you could gas wash your cylinders. Then you will need a rebuild. I would stop running that engine till that is fixed AT LEAST.
But remember what I said earlier....every time massive amounts of oil gets sucked through the bad valve seals it hits the HOT surface of the pistons as its going through and sticks onto the pistons. You will start to detonate after enough builds up and you will not be able to get it off till you physically clean them off individually. That crud gets super-heated hot spots that ignites the fuel/air before the spark plug hits, detonation. It will start to happen at all rpm's after the engine is up to operating temp.
Here's what mine looked like when my valve seals went bad: My leakdown and compression tests were great too, and excessive oil wasn't getting in through the intake.
Thread Starter
Joined: Mar 2006
Posts: 21,019
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From: The Beach...
Na a Leak Down is to check the Compression Rings..you back off the Rockers to fully pump-up the Cylinders so anything with the Valves is out of the question, unless one was bent.
I have raw OIL comin out the Exhaust, not Fuel.
I'm not detonating any, it's doing a good job of burning it up..lol
When I let off it when it has the most vacumm..expecially from high RPM's, and that is when it sucks in a bunch of Oil and pretty much smokes out everything behind me.
I have raw OIL comin out the Exhaust, not Fuel.
I'm not detonating any, it's doing a good job of burning it up..lol
When I let off it when it has the most vacumm..expecially from high RPM's, and that is when it sucks in a bunch of Oil and pretty much smokes out everything behind me.
I'm not detonating any, it's doing a good job of burning it up..lol
When I let off it when it has the most vacumm..expecially from high RPM's, and that is when it sucks in a bunch of Oil and pretty much smokes out everything behind me.
Thread Starter
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
Yea it happens when I stomp it too.
Now you know the boat I'm in..lol
Konwing my luck and like everything else in the automotive world it's a simple fix and something I probably did wrong. Just wish I could figure out what it is.
Konwing my luck and like everything else in the automotive world it's a simple fix and something I probably did wrong. Just wish I could figure out what it is.
Thread Starter
Joined: Mar 2006
Posts: 21,019
Likes: 893
From: The Beach...
I did the Valve Seals both times, the Valve Guides are un-touched and have been the same ones since I got the Heads. They were new when I got them, my Engine is the first thing they have been ran on.