I would rather not be the one saying this but normally white smoke is water/coolant. Since it smells sweet and coolant is made with glycol I would venture to bet it is a head gasket. I know there was an issue with superchargers with these motors and thats why they are hard to find. I do also know that the 4runner motor is made stronger than the tundra/seq motors so hopefully just a head gasket. If it does turn out to be a head gasket make sure they send the head to a maching shop to make sure its not warped. Also if it is the head gaskets see how much more it would cost to do the other side while half the motor is apart. Maybe when they do the head job the machine shop can put stonger/better spring and flow the heads better for your S/C. I will keep my finger crossed for you this weekend and waiting to see what happens.
Ya I thought about the HG from the beginning but as I said in my first post, the coolant level is still where it was before. I'm pretty sure in this particular case, the white smoke is being caused by unburnt fuel going through the cats. We'll see what Toyota says later today. I still think there is a very good chance it's just a coil pack. On IH8Mud, they say that they are very sensitive, so if one of them is bad, the computer will throw codes for that one AND the one's around/adjacent to it. So if you look at this firing order diagram:
It could be the #5 cylinder, which could also throw the codes for the #3 and #7. Now that I think about it, I may not have mentioned that I got more than just that first code. If I didn't before, here's what I got:
P0113 - IAT sensor (part of the MAF sensor) circuit voltage high
P0300 - Multiple cylinder misfire
P0303 - Cylinder #3 misfire
P0305 - Cylinder #5 misfire
P0307 - Cylinder #7 misfire
What I was saying before should make more sense now, sorry about that guys!
Speaking of the superchrager though I would love to have one and even saw this on on craigslist in dallas. I just worry about long term damage.
Supercharger 4.7L V8
I wouldn't worry about it if you keep it at the boost level it was made to run at. I mean, obviously it *could* have caused whatever is wrong with my truck right now, but that is yet to be determined. Tundra/Sequoia I definitely would not do it on, but LC100 and 4Runner are both made in Japan with stronger (forged, i think) internals that should hold up just fine. Of course there will be more stress on the engine, but not enough to warrant not doing it in my opinion.
Keep us updated. If nothing else, it will be good to have in the archives. I concur with the post above about coolant. That's never a good sign when you get lots of smoke of any color. White or black smoke equals burning something. When it has an odor like that then it's usually coolant. Oil has an entirely different smell and we all have seen and smelled it before as it is so common on older cars. Luckily it is becoming less and less common as engine quality has increased over the years.
Those of us who can remember riding around in the 70's can remember how many cars were blasting out massive amounts of burning oil because the engines were so crappy!
Best of luck.
Forget to add... my brother experienced the same codes on his Sienna minivan. He was getting a lot of smoke as well, but it wasn't sweet smelling. Plugs were fouled pretty badly like yours. His was caused by sludge and then bad rings. He was getting tons of blow-by. The sludge issue was clearly a manufacturing defect, but Toyota refused to pay for it because they claimed that in order to qualify he had to prove that he had service done every 3,000 miles (WTF? That's not even the recommended service interval in his manual!) and it had to be done and documented at a Toyota dealership. So they were denying claims if you didn't use their service, which is 100% against the Magnusson Moss act. Look it up and be prepared to fight if the dealership wants to be jerks.
I've been through a similar situation on a head gasket with Chrysler (what a mess!) and they had replaced it twice under warranty. As soon as the warranty was up it happened again. Of course it was due to their faulty initial repairs in warranty and I did everything I was supposed to. It happened again outside of warranty, which was THEIR fault. They refused to fix it. I brought up Magnusson Moss and their tune changed. I have no idea whether it was even covered under that act, but the fact that I knew about it seemed to scare them. They then claimed they would do a "one time good will repair" on it. I said that wasn't acceptable, and they'd do it until they got it right whether it took them once or 10 times. They'd already had two cracks at it and blown it. Luckily there was a redesigned part and I printed off the freaking TSB for them and made them use the correct and redesigned head gasket. There's a reason I don't drive Chryslers anymore. CRAP.
Don't back down. If you don't like what you hear right away then try another dealership or call corporate. Spend as much time on the phone as needed. Make sure they get it right.
I always post stuff just for the archive's sake. I'll definitely keep up with this one until the end, just in case it happens to anyone else. I won't be pushed around, but that Magnusson Moss is good to have in the arsenal, thanks!
