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.

 

valve seals

 

Better fix it quick too, the more you drive it like that, the more you're gonna build up burnt oil on your pistons.. That will cause detonation full time.

 

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..

 

I read that...if you have oil on all 8 plugs BUT you do not have any oil entering the intake via the PCV...the only way in is valve seals.

When did you do the valve seals? I assume you did them all, both sides?


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Yea, did all of them about maybe 3 weeks ago..

It's one of them things that's pissin me off..lol

 

Did you block off the PCV sysetem or is it venting into the air. If you blocked it of then you buliding internal pressure that could cause blow by

 

It's got Breathers on each Valve Cover so that's not an issue..it has very very little blow by once it fully warms up.

 

So, did you totally block of the PCV from the intake? So there's no way oil is going into it?

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?

 

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.

 

Next question in a way I guess would be has anyone had their Valve Guides go bad to where they had to replace them, and what were the symptons?

 

Yes, me.

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.

 

Yea mine smokes like that on a hit aswell.

I just replaced the Seals and it still does it..I must have missed something..

 

Well, when this happened to me it was Lingenfelter that told me my valve seals were bad when I told them what my symptoms were. I pulleed my heads off in my driveway and gave them to a local shop, my valve seals were literally shot. He said they were the worst he'd ever seen.

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.

 

I think a leakdown check can find bad valve seals.

 

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.

 

Oops, I was thinking raw fuel for some reason.


It won't detonate until enough oil gets built up and the hot spots begin. I'm just saying, its what will certainly happen soon if the valve seals are bad.

But you said it happens also when you stomp it from a roll, right? This is what mine was doing. I never got any smoke trail at all when I let off the gas pedal from a high rpm or hard run. Maybe thats a different issue then and it points to something different than the valve seals. I don't know what else it could since you have good rings, oily wet spark plugs and no PCV oil.

 

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.

 

Who did the valve seals and guides?

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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.