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Hyundai Sonata Questions

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Cost to replace timing belt
Where can I go to have a Drive Cycle done on a Dyno? I can not do the drive cycle. It is too hard & time consuming to be done on the freeway or expressway. Any advice would be appreciated.
we tried spraying ether to see if it was fuel pump related and it still wouldnt start. after waiting a while it starts up again
There is also a strange white powder film that is covering my parts under the hood.
Also there is a strange white powder film under the hood.
2004 Hyundai Sonata.
Problems with lights: When pressing brake pedal, internal light/dashboard, rear brake, & sidelights turn on.

When turning on the knob to turn on the lights, rear windshield light, rear brake lights & rear sidelights turn on. Additionally, the front foglights & front sidelights turn on but not the general-use/low-beam lights. High-beams work properly when turning the high-beam knob but not the general-use/low-beam lights.

I checked the fuses under the hood & inside the vehicle - everything checked out fine. What is the cause of this problem & what must be done to resolve this issue?
just started today
I have a rattle coming from the belt area. Husband says it sounds to him like a timing chain rattle,but,everything I am reading says they only hear it on start up,mine is there constantly. Any ideas? Should I be concerned? Oil has been changed and the light goes right out upon start up.
There is extensive damage to the front of my Sonata. The hood is damaged showing part of the engine. The car still starts. When it was towed back to my home, I tried to park it more straight in the parking space and it was very hard to steer to the right.
the car shakes a lot, it want's to turn off, it does it some times, the diagnostic said was the coil #1 we put a new one the problem continues, also we change the cables and spark plugs,the spark plug #1 was black that the piston #1 fails also we change the injector, but it didn't work..we test the pressure of the motor and is good as they said was 125.. and we still having the same problem.. the car in the freeway runs good smooth only happens when we stop and go in the street..
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