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2003 Hyundai Sonata Base 4dr Sedan I4 Manual

2003 Hyundai Sonata
Trim Info:
Front Wheel Drive, 4 Door Sedan, Mid-Size
22 mpg city / 30 mpg hwy
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November 17, 2012, 2:47 pm

Al O

Question: 4cylinder sonata will not start

Just did the timing ,new crankshaft sensor,new coils,serviced heads I can't figure what else it could be?? OBD 11shows no codes

November 29, 2012, 3:59 pm

Ron W
Expert Mechanic

Check your RPM signal with a scantool. If it's there it probably isn't ignition, but a quick spark test at one of the coils would eliminate that as well. Then check for fuel pressure to see if the pump is working. If it is, you need to check the injectors with a noid light to see if they are firing. If they are, a compression test of a cylinder or two is the next logical step to see why it won't start.

1/1 users found this helpful.

November 30, 2012, 4:59 am

Al O

I really appreciate your reply. Since I asked the question I have since figured out I had the
Crank position sensor in backwards. Lol I am learning. Again thanks a lot.

0/0 users found this helpful.

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