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Matt
Matt, Engineer
Category: Kia
Satisfied Customers: 20583
Experience:  Mechanical Engineer BEng Hons22 years experience in car engine industry, 10 years in formula 1
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My 2004 Amanti Kia overheated I pulled over let it totally

Customer Question

Hello, my 2004 Amanti Kia overheated I pulled over let it totally cool down for about 5hours tried to start after refueling water in radiator and it will not start. Is there such a thing as default for overheating causing the engine not to start?
Submitted: 1 year ago.
Category: Kia
Customer: replied 1 year ago.
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Expert:  Matt replied 1 year ago.

hello

having an overheat won't prevent the engine ECU from working so there's something else going on

if its not turning over and cranking then the 1st thing to try is turing it over by hand to check its got no mechanical issues

if it does crank OK then I'd do some basic checks

1st check for spark by removing one of the spark plugs and plug it back into its lead and rest it on the metal of the engine ( DO NOT hold it on place by hand) then have your assistant turn the engine over whilst you watch the plug. It should give a fat blue spark at regular intervals.

If not then check that there's power to the coil pack (at the other end of the plug lead) using a meter. If there’s 12V at the pack but no spark then check the ECU power supply (fuse and relay) and also the connections to the crankshaft speed sensor.

If there is a spark and its still not starting then its likely that the ECU isn't opening the fuel injectors, if the injectors are working you can hear them click - its difficult to hear them with background noise so use a long screwdriver like a stethoscope, placing the handle end in your ear and the metal tip against the body of the injector whilst your assistant turns the engine over.

If you can't hear anything check the ECU power is present by measuring voltage at the fusebox and on its relay socket if OK then check the connections to the crank speed sensor and consider replacing this sensor if the wiring / connections look OK

If the car will start using a squirt of quick/ easi start into the intake then this confirms the problem is lack of fuel

Expert:  Matt replied 1 year ago.

Hi

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