My 2004 Kia Rio turns over but won't start. I took out one of the spark plugs, reconnected to the spark plug wire and held it against a ground part of the engine and had someone try to start it, and there was no spark.
I don't know what is between the battery and the spark plugs in this car. The spark plug wires come out of two white boxes - two from each box, are they some kind of combined distributor mechanism?
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on the very top of your engine should be a small plastic cover (usually has some kind of writing on it to advertise the engine type). This cover is usally held on by about 4 small bolts. remove those bolts and you'll see a series of 4 ignition coils with wire connectors. Disconnect those wire connectors and remove the coils being held in by one 10mm bolt on each coil and remove the coil by pulling firmly straght up. Your spark plugs will be located down in those holes where you removed the ignition coils from. Make sure then engine is cold when you do this. This car has aluminum heads and taking the spark plugs out of a hot engine can strip out the threads in the head.
First things you might want to do is to make sure your getting fuel to your injectors.This can be done by loosening the line to the fuel rail and have somebody turn the key on but don't start the car.You should have fuel coming out.Be sure to wrap a cloth around the fitting to absorb the fuel that does come out.Next pull a spark plug out and plug it into the plug wire.Have someone crank the car over and check for a strong spark.It sounds like you might have a bad fuel pump and not getting any fuel.
1. Disconnect high-tension code from spark plug.
2. Remove the spark plug.
3. Connect the spark plug to a high tension code.
4. Hold the spark plug with insulated pliers 5~10mm from a ground.
5. Crank the engine and verify that there is a strong blue spark.
If there is no spark, inspect the following points.
Step Inspection Action
1 Check for good connection of ignition coil Yes Go to next stop.
No Repair or replace
2 Check if resistance of high-tension leads are OK Yes Go to next step.
3 Check if the ignition coil is electrically charged
1) Ignition switch "ON"
2) Check if the engine coil (+) is electrically charged
Yes Go to next step
No Check the wire harness between ignition switch ignition coil and ECM
4 Check if resistance of ignition coil is OK
Primary : 0.36~0.44Ω (at 68°F (20°C))
Secondary : 10.9~13.3kΩ (at 68°F (20°C)) Yes Go to next step
5 Check if ECM is OK Yes
Do not attempt any maintenance on spark plug if engine is hot.
1. Disconnect negative battery terminal.
2. Carefully remove high-tension leads.
3. Use compressed air to blow any dirt or debris from around spark plug hole.
4. Check that spark plug fits squarely in spark plug socket and remove spark plug.
Raise a vehicle and install SST(OK552 131 001) in order to replace cylinder 2, 4, 6 spark plug.