Engine death?

[weezy]

I am at a loss here. Engine has 169,xxx and seemed to run ok for the past year, except I had the tranny rebuilt. I began going through changing belts and ran a diagnostic on it. Failed 3 out of 4 tests no symptoms except fuel mixture. Compression was fine. After adding fuel injector cleaner idle dropped, but ran smoother. Changed newly cracked radiator hoses, started overheating. Changed thermostat, hole in the radiator. Fixed radiator, no more overheating, but now coolant is spewing from the oil pan. Checked, doubled checked, etc., everything is in the right place. Bad head gaskets now? From the changing of the belts on was done over the past week, what is going on? Can someone help?

[Nick]

sounds like one hell of a week

hopefully its just that a lot of stuff went all together and you won't get anythign else major for a while

if this keeps going then ditch the car though...

by the way, what year/model/engine have you got?

[weezy]

It's a 91 4 runner with a 3vz-e v6 motor. I can't give it up man, put too much into it so far .... just at my wits end for the week!

[weezy]

I'm going to attempt to post a pic ....

[JeremyH]

Are you sure that you routed the belt correctly?

[weezy]

Yes, took it to a shop to double check myself.

[Supra Spider]

Am I corect in reading from the oil pan???
If so, the engine will require a complete overhaul, its one thing to have a gaskit go out and have some coolant entering a cylander and goung out the ass, its another to have it coming out from the crankcase itself, my friend you have either a cracked head or two or a cracked block either way your in a world of shit right now.
My best bet is that you cracked either of them by overheating it, and to make things straight here, cooland is a majority water right, water is a cleanser not a lubricant right, cleansers washing bearing will cause a bearing to spin and a rod to be thrown right!!!(HINT), at the moment the block is junked out and no longer usable, it will require a teardown and inspection for cracks, if it passes, then those Aluminum heads are probably to blame then, but inspect them anyways, if the block passes then you can either rebuild it yourself, not recomended unless you can measure to with 1/10 of .001" (thats one tenth of one thousands of an inch and for example one strand of hait is usualy two thousands thick) or have it done for you, all in all as a do it yourselfer for me to do (and as a buisness I get wholesale price on everything) it would cost round bout 800 bucks, you Im estimating 1700 without breaking a sweat. So My final sugestion, call up junk yards and check out what they have, and see if you cant find a swap, or better yet if you can find the 5vzfe which is a 3.4 liter dohc version of the 3vze and 3zfe (3.0 liter) single and dual ohc.
the 5v has much more Horsepower and fp torque and better fuel economy, itll run you anywhere from 100 to oh say 500 for those engines, depending on how you go and who you go to.


Maverick.

[weezy]

Ok, that would be my worst fear. Before throwing the towel in so quick I am going to explore every avenue I can. There are absolutely no symptoms of a cracked head other than the coolant in the oil pan. We did a little digging last night and found the water pump to be faulty now, leaving the coolant in the oil pan. Today I will be tackling that plus going to have a good look at the timing belt .... anything else in the cooling system that could break?

[Supra Spider]

Well after you go ahead and do all that, go ahead and check the head gaskit for shits anyways, its likely youve got other things wrong with it, and youll need to replace the oil pan gaskit as well.
But after all that go ahead and smell the exhaust & see if it smells sweet like honey, if so youve still got coolant atleast entering a cylander and being blown out the rear end, which would then tell me after fixing those things there and checking the head and intake manifold gaskits that youve still got a major leak somewhere in the block.
FYI, the 91-94 3vze engines had a recall on the heads and head gaskits because of abnormal growth of the heads and wear of the gaskits while engine is running. The solution was the 3vzfe and then in 95 the introduction of the 5vzfe.