(I think)"She's dead, Jim."

UpL8

New member
Hello all!

OK, so, I changed the oil for the first time on my 1997 4Runner on Saturday, 7/9/11. There was a smoking issue when I started it up that precipitated the oil change, plus, since the vehicle is 'new to me', I figured it would give me a starting point in the maintenance.

I drove up to a visit a friend on Sunday, 7/10/11 and all was great in the 4Runner - for about 10 miles - then, the smoking started again, only worse. But I stupidly thought that maybe the engine just needed to 'adjust' to the oil change or whatever. By the time I returned home on Sunday evening, the smoking issue looked like it had lessened again.

So, I drove to work yesterday, the smoking seemed like it was again, worse, but I also thought that maybe I was just being hypervigilant about it. When I left work for the day, that's when the real trouble began....

As I drove home on a rural highway, I noticed the smoke coming from the tailpipe was 1) a pretty consistent, thin amount - whitish blue and it smelled of burning oil and 2) my 4Runner started 'surging' at between 1600 and 1800 RPM; it would 'surge' between those RPMs for about 20 seconds - I was using the cruise control at the time. The 4Runner did it twice in approximately 12 miles.

When I turned off of the highway, the 4Runner hesitated a bit, though I was gentle on the accelerator, but then it seemed fine (aside from a somewhat large puff of smoke from the tailpipe).

I got home, let my dogs out, and let the engine cool a bit before I thought I would check the oil. Of course, I had been looking for leaks prior to this time since it is well-advised and because I simply wanted to be sure I'd done the oil change correctly. When I checked the oil NOTHING SHOWED on the dipstick!! There was a tiny droplet of brownish oil at the very tip of the dipstick, but otherwise nothing! I thought perhaps that I hadn't seated the dipstick in the tube correctly, so I did it again...in fact, I was so incredulous about the whole thing that I checked it at least 5 times - with the same result each time.

I find it hard to believe that this vehicle went through 5.5 quarts of oil in 3 days! Even at the rate it started smoking that seems outrageous - right? Well, how could you guys know, you haven't seen the smoke from this particular vehicle, sorry! There are no leaks that I've seen, so I have no idea what's happening there. But, because I insanely thought that more oil would somehow "fix" this, I put in 2 more quarts, and then I was out of oil. The new oil I'd put in didn't register on the dipstick either - and that was as the vehicle just sat...it wasn't running and it was still a little warm.

This morning, I was running a little late, so I thought I would go get some more oil first, so even if the problem continued I would at least have oil to put in until I could address the matter more readily. As I drove to the store, there was a LOT more hesitation from the engine, and a LOT more smoke than there had been. Going from the store to work didn't seem like a reasonable alternative, so, after purchasing the oil, I returned home and called in. The 4Runner's performance in the 7 miles from the store back to my house was very poor and I felt lucky that it made it back at all, I couldn't get the 4Runner to accelerate over 40 MPH at points, and the 'surging' thing was far worse than before.

Now, I'm at home - writing this and trying to figure out where I need to take this truck to have it looked at. Clearly, this is beyond the scope of my abilities, and it seems that the oil change I did on Saturday has unleashed the hounds of hell on my vehicle. While I do want to trust automotive professionals, I believe that knowledge is indeed power and I would like some opinions on what you folks think could be happening. I have no intention of marching in on a mechanic and tossing out what I've learned on the internet as the holy grail of automotive expertise, but maybe if I can find a way to articulate things clearly, it might help?

My concern is that this is one of those instances where the piston rings have failed or on their way out. And since I don't remotely have the funds available to fix that, I figure this means that I will have to get rid of the 4Runner and try to find something else.

And that's why I think 'she's dead'.

I'm open to ideas on resuscitation, however! Thanks!
 
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Yikes, this doesn't sound good for sure. Have you looked around the underside to see if you have any oil leaks? I wouldn't think you could burn 5.5 qts in 3 days either, so maybe it leaked out elsewhere.

You did put the plug back on the pan after draining right?
 
Oh yes, I checked EVERYWHERE for leaks...and yes, I put the plug back after draining! I distinctly recall doing so, even put a nice new nylon gasket on with it after cleaning it up.

I am guessing the oil is just totally burning off, and maybe since the oil is new any wear on the piston rings is possibly allowing the oil to flow into the cylinders, where it burns with the air/fuel mixture? I can't say I'm an expert around internal combustion engines by any stretch of the imagination, but that seems possible to me. It could explain the 'surging' thing too, if the thusly-created mixture of oil/fuel/air is as ugly as it would seem...why would the engine perform well?

I am still checking out area mechanics, trying to find someone who had the time to even just take a look - sheesh!
 
I'm using Valvoline MaxLife 5W-30. That's - as I understood it - the optimal grade for the situation, but again, I should emphasize that I am no expert - CLEARLY! LOL!
 
As a rule of thumb:

Blue smoke: usually rings and/or possibly valve guides
White smoke: coolant in the oil, headgasket issue

How is the idle?
 
The idle is good...when I start the truck up, there's smoke, but the idle is fine, no stumbles or missing. When I drive it and it's between 1600 and 1800 RPM at around 45 MPH it does that 'surging' thing, or maybe it's hesitation? It's kinda rhythmic for about 20 seconds. When I get into the driveway and as I park it, the idle is as smooth as you could want. If I didn't know better, and just by the sound of the engine at that point it sounds perfect!

I don't think it's the head gasket - at least at this point - the smoke definitely has a blue-gray cast to it and it smells like burning oil. I'm therefore leaning toward valve stem seals, guides and/or rings - either way, I know that's not going to be a cheap fix...if it's even worth it or if I can afford it. I'll have a better idea once I get someone to check it out...but still, I have to make a big decision around this.

I like the 4Runner in general, but I'm not sure it's worth it to try and save this one...I know that's harsh, and so if anyone is offended, please cover your eyes as you read this - LOL!
 
When you are checking the dipstick, is the truck parked on a level surface? It needs to be level to get an accurate reading.

The reason I ask is I have seen and heard of more than a few people checking their oil level while parked on a hill, not realizing the vehicle needs to be level for an accurate reading. They incorrectly assume it's low, and add more oil, which if enough gets added, can exhibit the characteristics you described.

When you took the old oil filter off, did the old oil filter gasket come off with the filter? Sometimes they can stick to the block, and if it's not noticed and removed, and then the new oil filter is installed, you can get a pretty significant oil leak from between the doubled-up gaskets.
 
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Pull the PCV valve and make sure it rattles. It may be clogged.

I'd do a compression test (dry and wet) and go from there.
 
You didnt leak/ burnall your oil, last i checked the dipstick only reads the top quart or 2 of oil, so you should gave still had 2-4 quarts in there, otherwise your dummy light would have came on...
 
You sure there is no oil showing on the dipstick? New oil is very clear and sometimes hard to see. If the truck has now been sitting for awhile have you gone back out and checked it since you've been home? Maybe check the end of the dipstick with a clean paper towel/napkin. Remember its not going to look like the oil that you are used to seeing on the dipstick if it hadn't been changed in a long time.

I find it hard to believe that its burned through that oil that quickly, and/or you don't see oil spots everywhere it sits. That much oil you'd see a trail behind you everywhere you go.
 
Drain the oil out, and count how many quarts are in there, and then i would buy some Non-synthetic oil shell or mobil, and then run it, and use 10w-30 this time...
 
It sounds like you have covered everything as far as visual tests. You do need to do a compression test or have one done. I will point out one more thing. If is is burning oil at that rate you most likely will be needing a new catalytic converter very soon but not until you take care of the engine burning oil first.
 
I'm no expert but can't he plug a spark plug wire and plug and see what is going on down there? I know I have had oil leak in through the spark plug tube before, and if the piston ring(s) are bad would you see the effects on the tip of the spark plug?

That might be a way you can check for yourself, before you go to the mechanic.
 
Alrighty then, folks...this is what's going on so far. I am taking my 4Runner to a mechanic recommended by a friend, I have to take it in tomorrow since the guy's booked up...that's OK with me right now.

I followed most of the advice given in this thread both by y'all's suggestion of things I hadn't thought of and my own intuition so let me answer some of those questions.

My 4Runner was on a level surface when I checked the oil. The oil now doesn't even show up ANYWHERE on the dipstick - and I checked it VERY carefully as I do realize that new oil is very clear, particularly on a little strip of metal - the dipstick is as dry as can be.

I too find it hard to believe that I have gone through that much oil so quickly...y'all find it hard to swallow? So did the mechanic I spoke with...he even parroted what I told him so that I could correct myself had I misspoken. Oh no, that's how it is. There are no tell-tale signs of oil leakage anywhere I can see. Nothing coming off the block around the filter, nothing from the drain plug region, nothing from the tailpipe but smoke.

I pulled out the PCV valve and it even rattled on the way out, so when I shook it and it continued to rattle fairly freely, my hope that it might have been the PCV valve was dashed. Though, from the looks of the PCV valve, it's amazing that it does rattle...there's crudded up sludgy looking oil coating both ends of the valve, so maybe the fact that it rattles still doesn't mean that much, I don't know.

The dummy light...no, it hasn't come on, but then again, if my 4Runner is consuming 5+ quarts of oil in 3 days with no rational explanation, and certainly no evidence of where it's going, then how do I even know if I can trust the entire system to display the dummy light? Rhetorical question - it's a good point, but I can't dismiss the possibility that everything is messed up with this vehicle, so at this point, if it's true that there's likely still oil in the crankcase, I'm happy about it...but a bone-dry dipstick still gives one pause!

At this point I would just like to know what I'm up against around this truck, I'll resolve it if I can but if I can't make it work then I need to move on to other possibilities. I shall keep you all updated as it goes. And as always, your support and advice are greatly appreciated!
 
I would lay some cardboard out underneath your truck to see whats going on, if you really have no oil leaks something is seriously wrong. But then again, if your engine isnt knocking like its dry then i find it hard to believe you burnt 5.5 quarts up in three days.

Check your gasket on the Dipstick and the oil cap. Make sure that they are both intact.

Also, the dipstick runs along a tube all the way down into the oil pan. There is also a good chance that the tube is broken and your stick may actually be sliding out of the tube housing and into the some other part of the engine. And if that other part is anything exhaust related that may explain why all your oil is gone and you see no leaks. It could be burning off before you even see it, which explains the blue smoke/burning smell.

I would drain your oil, see how many quarts are actually left, and then fill it back up. Start it, let it idle for 10 min. Then check the level. If it still shows nothing i would put money on a broken dipstick housing...

Another trick is to buy a roll of plumbing solder, roll it out a good length and slide it down into the tubing until you can feel it hit the bottom of the pan. Make sure it does, then check to see if you read any oil

Good luck
 
The dipstick could be doing what happened to me - Checked oil level right after work one day after an oil change and it registered at almost nothing at all. No possible way that it could be that low and no leaks. I put maybe half a court and checked again and it was well over the full line.

That happened to the mechanic who did my oil change as well - he couldn't figure it out. I don't trust the dip stick as religiously as I used to.

To go through that much oil without a leak is crazy. To burn that much oil would mean it would mean major blow by on one or more of your piston oil rings.

With hesitation only under engine load - my guess is compression ring/piston ring related. Especially without any leaks. Worst case scenario... cylinder sleeve damage. Compression test is a good idea as someone had recommended.
 
my money is on the piston ring, take out your spark plug and check for oil if oil is there check compression in all 6 find the ones that are weak take the engine apart and replace ring which translate to $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
 
Well, folks - for all intents and purposes, my 4Runner is pretty much dead. I mean, I can start it, drive it...blah, blah, blah. But the mechanic today said that I have significant "blow by", even into the air filter box (someplace I forgot to check). So, basically yeah, it's the rings.

As I mentioned before, I can't remotely afford to do either thing...replace the rings and/or get another engine right now. Around here, I can probably find another 4Runner of the same vintage for a little more than I'd spend on replacing the motor. Therefore, at this point, I just have to figure out what I'm going to do with it. And what to get to "fill in" as my primary vehicle PDQ!

There's a guy I met at the mechanic's place that said he was looking for a parts vehicle for HIS 4Runner, and I may just take him up on the offer unless I find one heck of a good deal on repair work.

Anyway, that's the current situation. I would like to thank you all again for your support and opinions on my issues with this vehicle, everything was very helpful! Don't think you'll get rid of me just because my 4Runner is barely alive - you never know what could happen around this, and there is a lot of information here that is applicable to vehicles and maintenance in general - I don't scare off that easily!
 
drop a used engine in it urself and buy another DD after you fix the 4runner sell the DD thats what i would do.
 

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