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Hyundai Sonata: 2001 hyundai sonata 2.4 engine will start then

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2001 hyundai sonata 2.4 engine...
2001 hyundai sonata 2.4 engine will start then dies and will not start again
Submitted: 2 years ago.Category: Hyundai
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Answered in 1 hour by:
6/24/2015
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
EricFromCT
EricFromCT, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 4,121
Experience: ASE Master certified L1, L2, Diesel Certified 16 years experience
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Hi. Have you done anything to try and fix this yet? Have you verified if you have fuel at the engine?
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Customer reply replied 2 years ago
yes
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
So what are all the things you have done or replaced so far?
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Customer reply replied 2 years ago
crankshaft position sensor, camshaft position sensor, fuel pressure regulator, maf sensor, plugs, tps sensor, it is getting fire and getting fuel. 65psi, The car will start and run for 3 seconds and dies and will not start for 10hrs and then do the same thing.
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
Will the car run if you spray starting fluid into the intake?
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Customer reply replied 2 years ago
no
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
You should probably make sure the injectors are firing. They should have power all the time to one wire of the injector, and the other ground wire gets pulsed to ground by the computer.
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Customer reply replied 2 years ago
Tried that, they are firing
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
Did you check the engines compression?
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Customer reply replied 2 years ago
both ground wires are hot when the key is turned on. and yes I checked the engine compression.
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
what was the compression readings?
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Customer reply replied 2 years ago
its been a while since I did that but if I remember correctly they were all high around 145
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
That is not high. The compression for that engine is supposed to be 175. 30 psi low on all cylinders is not good. You may have a timing belt problem
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Customer reply replied 2 years ago
I have it written down somewhere, and we checked the timing belt can I respond tomorrow? I am about to leave.
Customer reply replied 2 years ago
can we continue tomorrow?
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
yeah
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Customer reply replied 2 years ago
When we checked the compression it was around 170, all of them were about the same.
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
Ok. You should check the exhaust to see if it is plugged solid.
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Customer reply replied 2 years ago
checked that and it's good
Hyundai Mechanic: EricFromCT, ASE Certified Technician replied 2 years ago
Ok. Sounds like everything checks good, so I do not think I will be able to tell what is wrong. I will open the question up to other experts. Please do not respond or the question will lock to me. Thanks.
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EricFromCT
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