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Old 10-13-2011, 09:05 PM   #1 (permalink)
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Default Accent 2004 won't start

My hyundai accent 2004 standart doesn't start. The engine crank, but there's no fire. I change the camshaft and crankshaft sensor. Also change my timing belt, my alternator, my starter, my control box and my computer. But if I pull the car with my pickup, it runs. While the engine is running, the computer doesn't give me any diagnostic code. Someone have any idea?

I also check my fuse, relay,... Even jump start the starter to check if it was the switch.
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Old 10-13-2011, 09:56 PM   #2 (permalink)
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Wow that's a strange one.

When its cranking over is it turning fast enough ; try boosting it when starting to make sure battery amperage is there.

It starts immediately with a tow , or you only tried it once ? With window is down can you hear fuel pump pressurize for 3-4 seconds before starting. Were the sensors changed dealer parts or aftermarket. Control box ? means your ECM or main computer ?

In a dark garage if possible remove one plug wire, put on a good spark plug and lay it against metal under hood. Hold with insulated pliers or heavy glove if brave. You should see a bright blue spark , not yellow or orange. Weak coil if spark isn't blue.

Lastly what is the engine compression , even cold numbers are useful. Weak compression makes for bad starting, especially in cold weather when clearance increases.

Last edited by santa06; 10-13-2011 at 10:01 PM.
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Old 10-13-2011, 09:58 PM   #3 (permalink)
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Weird, unexplainable electrical problems in a Hyundai? You live in Canada?

I'll give you 5 to 1 odds you have a bad ground, like a negative battery cable bolted to the body. If it was my car, I'd completely disassemble the battery cable connections, clean them real good, and reinstall with dielectric grease. Happens a lot to Hyundai, methinks.
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Old 12-29-2011, 10:19 AM   #4 (permalink)
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Im having the same problem with my car. It cranks but wont start. I have an 04 accent. checked the timing belt, have new plugs and wires, changed the fuel pump as I thought at first it was the fuel pump but obviously it wasnt. Im gonna try cleaning the ground connections and see if that works. Im stumped!!!!
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Old 12-29-2011, 01:34 PM   #5 (permalink)
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Cleaned all the ground connections and no luck!
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