Engine misfire?

Hi, I have a toyota corolla RXI. I recently changed my car VVT pulley. Had a reputable mechanic do it for me. After that change my car seems to have an unusual star up after a long drive. When engine is cold or warm its starts up normal but after about 10 minutes of driving the problem would occurr, I switch it off for 3 minutes and decide to start it and it gives a missing like start up, its not severe missing but not the normal start up. Just few gentle revs and the car is fine thereafter. No smoke puffs out from the exhaust. Car goes fine otherwise. Car has a 63 mil exhaust and no engine mods. Car does not miss when driving. What could be the problem?

HI I have the same problem with my blacktop 20v. Have you sorted out thre problem yet I am still looking for a solution

Electrical problem
2000 Toyota Corolla 4 cyl Front Wheel Drive Automatic 129xxx miles

It really just started missing out on my way home yesterday. I took it to the local AutoZone for them to run diagnostics, and it came up "Cylinder 1 Misfire". I changed the plugs, which were in pretty rough shape. However, this did not fix the problem. I also, while the car was running, unplugged each Coil, one at a time. All four coils, when unplugged, caused the car to die. So it appears as though the coils are working. Anyone have any insight on what may be my problem? I have a fairly long commute to work each day, and would hate to have to drive it like this. Thanks

Misfire on cylinder three: changed all plugs, installed new coil pack on cylinder three, swapped cylinder three injector with another cylinder. Codes never changed still misfire on cylinder three. If I unplug electrical connection to cylinder three injector, no change to rough running engine, do the same to other cylinders and engine almost dies. If I unplug electrical connection to cylinder three coil pack then engine dies. Idles a little rough but really shakes under load. Check engine light blinks at about forty mph but stops below that or when idling in park. Why would unplugging coil pack on cylinder three kill engine but when I unplug cylinder three injector there is virtually no change in how the engine is running?

No I have not. Never have done that. This may be one for the true mechanics.

Thanks, I will try that tomorrow if I get the chance.

My 2000 corolla is missing badly. I have taken it to a mechanic, and all he said is it was running to "good" to be anything major. However, today, it started missing even worse, and barely makes it up a hill. Whenever I try accelerating up a hill, it makes a "rattling" noise; sounding like it's coming from the engine. What in the world is that? I have checked the Coil-packs, has no oil in antifreeze, and no oil on spark plugs. Please help in any way you can.

Thanks, but what exactly is "pre-ignition"? And how is it fixed?

I checked the coil packs by first starting the car. Then, one by one, I disconnected them; all four of them seemed to be working because as I disconnected them, the car would start to die. And it was the same with all four. The code said "cylinder 1 misfire".

My car jerks each time l turn the ignition on and until the car stops. Would drive or go with a reverse, because it will go off and this has eventually lead to hard starting almost every time.
Once the jerking stops the car will drive perfectly, but I am not comfortable with the situation.
What could wrong with the car?