That Oil Burning Issue ( updates )

Bluenotes · 07-24-2006, 03:29 PM

Ok, I went and since it was smoking as you may have read in the other post when I parked it, I would be under the asumption that I could narrow it down by checking the plugs and their colour, well I checked everyone, but to my surprise every single one, except #1 was the proper colour of brownish and not sooty or anything, but #1 was BLACK and sooty, now the car runs fine, no hesitation so I am not thinking this one plug is just a dead plug otherwise I'd have a missfire code and I would also be running once again like a 5cyl, and I knwo what that feels like.

Now before when I pulled it apart as some of you may have read, it was what I though #3 cylinder that was junk as it was caked with soot, never at that time did I think of checking plugs , which I wish I did now. So from this little bit of looking, seeing as obviously the other 5 cylinder rings and valve selas are obviously ok ( right ? ) since the bunrn on the plugs is right on target, and since # 1 is what I would call either soaked in gas or soaked in oil, I would guess oil since my fingers are slipping off the keyboard, lol. Would you be under the impression that is the root cylinder, and can just on cylinder pump out that much smoke at idle on and off like it does ( for those who have not, read my other thread it explains this scenario very well. )

I can still do a compression test, but if it turns out ok then what? last time, before the most recent rebuild and it smoked on and off then aswell I might ad, just not like this, not where you could make people look at you like you were from Mexico driving a beat up VW with a million miles on it, but it did burn it a bit, and I did a compression test twice and it was 140 or more across the board. I have no idea what it is after this recent rebuild, but I would guess judgeing that the other cylinders have obvioulsy seated, that this one should have aswell as this actually when looking at the block itself was the best looking cylinder of them all. So that leads me back up top to those valves, which I am going to check into now after I pull the cover off, but just wanted to hear your oppinions on my impromto engine diagnoses.

Also everyone talks about valve guides in these heads, I looked at my other 2 sets and I do not see any guides in there, I pull off the valve seal and it is just regular cast material where the valve goes through, everyone talsk about bronze guides and such, am I missing something here?

Thanks
Jeff

maxwedge · 07-24-2006, 04:33 PM

Quote:

Originally Posted by Bluenotes

Ok, I went and since it was smoking as you may have read in the other post when I parked it, I would be under the asumption that I could narrow it down by checking the plugs and their colour, well I checked everyone, but to my surprise every single one, except #1 was the proper colour of brownish and not sooty or anything, but #1 was BLACK and sooty, now the car runs fine, no hesitation so I am not thinking this one plug is just a dead plug otherwise I'd have a missfire code and I would also be running once again like a 5cyl, and I knwo what that feels like.

Now before when I pulled it apart as some of you may have read, it was what I though #3 cylinder that was junk as it was caked with soot, never at that time did I think of checking plugs , which I wish I did now. So from this little bit of looking, seeing as obviously the other 5 cylinder rings and valve selas are obviously ok ( right ? ) since the bunrn on the plugs is right on target, and since # 1 is what I would call either soaked in gas or soaked in oil, I would guess oil since my fingers are slipping off the keyboard, lol. Would you be under the impression that is the root cylinder, and can just on cylinder pump out that much smoke at idle on and off like it does ( for those who have not, read my other thread it explains this scenario very well. )

I can still do a compression test, but if it turns out ok then what? last time, before the most recent rebuild and it smoked on and off then aswell I might ad, just not like this, not where you could make people look at you like you were from Mexico driving a beat up VW with a million miles on it, but it did burn it a bit, and I did a compression test twice and it was 140 or more across the board. I have no idea what it is after this recent rebuild, but I would guess judgeing that the other cylinders have obvioulsy seated, that this one should have aswell as this actually when looking at the block itself was the best looking cylinder of them all. So that leads me back up top to those valves, which I am going to check into now after I pull the cover off, but just wanted to hear your oppinions on my impromto engine diagnoses.

Also everyone talks about valve guides in these heads, I looked at my other 2 sets and I do not see any guides in there, I pull off the valve seal and it is just regular cast material where the valve goes through, everyone talsk about bronze guides and such, am I missing something here?

Thanks
Jeff

You cannot check the seating of the oil control rings with a compression test, you can check the top 2 rings with a leak down test looking at leak percentage on the gages, the oil ring requires pulling the piston for inspection. Are the valve seals the type that fit down over the top of the guide if so, make sure an intake seal has not lifted off the guide and is not sealing anymore.

BNaylor · 07-24-2006, 04:41 PM

Bluenotes,

Please keep your updates or any subsequent replies limited to the original post below:

http://www.automotiveforums.com/vbul...d.php?t=595830

We only allow one thread on the same issue, otherwise it may get confusing for you and other members weighing in. Also, it creates unnecessary work for the Moderator to track it and possibly merge the information.

Also, I noticed a similar thread in Pontiac Non-Specific forum.

Thank you for your cooperation.

Bluenotes · 07-24-2006, 04:47 PM

Quote:

Originally Posted by maxwedge

You cannot check the seating of the oil control rings with a compression test, you can check the top 2 rings with a leak down test looking at leak percentage on the gages, the oil ring requires pulling the piston for inspection. Are the valve seals the type that fit down over the top of the guide if so, make sure an intake seal has not lifted off the guide and is not sealing anymore.

Yes they are the ones that fit over the top, I looked at the valve seal and it looked a little messed up in the inside, not where the valve stem goes through but on the inside, it was still firmly in place though not off the guide. I replaced it anyway with another.

As for the oil ring issue you speak of, what am I suppose to look for as remember these are brand new rings all around and Ihad the same issue, exact same prior to the engine rebuild with the old rings.

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