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Hey everyone, I’m in dire need of help with my car.. Long story short, merging with traffic, accelerating to 5000RPM, then lost most of my engine power. Cylinders 2 and 4 are misfiring constantly. This is a 2009 Toyota Corolla with the 1.8L engine. It seems as though the valve stem caps came off or something. Something isn’t working correctly..
I’ll attach a link to a youtube video that I recorded of it..
[video]http://www.youtube.com/watch?v=eeBmWmCxA9w&feature=youtu.be[/video]
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Are you only getting p0302 and p0304 and no VVT related codes?
As much as you may not want to hear this; based upon what you have said, there is a good chance you have bent valves… A compression test can help you determine this rather quickly… A very outside chance is a possibility of the chain jumping, but that is very outside…
-Karl
[quote=”ToyotaKarl” post=85836]Are you only getting p0302 and p0304 and no VVT related codes?
As much as you may not want to hear this; based upon what you have said, there is a good chance you have bent valves… A compression test can help you determine this rather quickly… A very outside chance is a possibility of the chain jumping, but that is very outside…
-Karl[/quote]
I remember misfire codes for 2 and 4, and another code for multiple misfires detected. No valve codes, I’ll check again when I get back to my car later.Allright, so i highly doubt the car is able to detect a problem with valves. It gave you the misfire codes, and that’s it. It’s mechanic’s job to find out why is the engine misfiring. Correct me if i’m wrong.
If you can’t check your compression (or don’t want to pay for it or whatever), I suggest this : Not sure if your car has a clean flood mode, but even if it had, it still would be better to when the key is off, pull out the fuel pump fuse or relay (or disable the fuel somehow, these two are the easiest to do). Open the hood, have somebody in the car to crank the engine for you while you record the cranking sound on video (and post it here of course). I’m sure that we can determine if your car has no compression from the sound of the crank.
[quote=”Skyro” post=85878]Allright, so i highly doubt the car is able to detect a problem with valves. It gave you the misfire codes, and that’s it. It’s mechanic’s job to find out why is the engine misfiring. Correct me if i’m wrong.
If you can’t check your compression (or don’t want to pay for it or whatever), I suggest this : Not sure if your car has a clean flood mode, but even if it had, it still would be better to when the key is off, pull out the fuel pump fuse or relay (or disable the fuel somehow, these two are the easiest to do). Open the hood, have somebody in the car to crank the engine for you while you record the cranking sound on video (and post it here of course). I’m sure that we can determine if your car has no compression from the sound of the crank.[/quote]
I actually found out what’s wrong. I took the valve cover off and 9 of 16 rockers fell off. No valve problems, just need to put those rockers back on.The rockers don’t just fall off cause they’re tired. About the only way to do that is to over-rev the engine. Did you miss a shift and floor it? Put the rocker arms back on and be a bit more careful in the future.
I’ve never heard of something like this, over revved could cause engine to die out or fuel pump to stop working, this i could understand, stuff just came loose when it’s revving a bit high, 5000rpm isn’t really a lot, almost all car could manage that amount, can you take a pic, i really wanna see it.
[quote=”ToyotaKarl” post=85883]Would love to see the pics…. Did they survive that well?
-Karl[/quote]
All of the rockers survived completely intact. Lost a couple valve stem caps to the oil pan.That’s the #4 cylinder. No rockers left attached.
What an engine!!!!
Float the valves and spit out the followers.
With engineering like this, maybe Toyota really did have “Sudden Acceleration Syndrome” rather than driver pedal confusion!!!!!
[quote=”Rereonehundred” post=85943]What an engine!!!!
Float the valves and spit out the followers.
With engineering like this, maybe Toyota really did have “Sudden Acceleration Syndrome” rather than driver pedal confusion!!!!![/quote]
I suppose that’s true.. Lol but when this happened to me, I had almost no engine power. I thought the runaway Toyota came from too many floor mats, and the gas sticking to them.[quote=”barneyb” post=85976]I’d suggest, when you have it back together, check compression.[/quote]
Will do. Good idea.[quote=”ChaoticWeaponry” post=85957][quote=”Rereonehundred” post=85943]What an engine!!!!
Float the valves and spit out the followers.
With engineering like this, maybe Toyota really did have “Sudden Acceleration Syndrome” rather than driver pedal confusion!!!!![/quote]
I suppose that’s true.. Lol but when this happened to me, I had almost no engine power. I thought the runaway Toyota came from too many floor mats, and the gas sticking to them.[/quote]Good find! Yes, over revving can cause the engine to fly apart. You’re lucky it was just the rockers. You have to consider the forces at work here. Those valves have to change direction 180º in a fraction of a second. There comes a point where inertial forces take over and things come apart.
Thanks for the update. Let us know what happens when you get it back together.
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