Takes a little longer to start after sitting thirty minutes

RYANS79

MEMBER
2012 KIA CERATO
1.6L
4 CYL
2WD
AUTOMATIC
74,300 MILES

Hi, my car starts right away in the morning or when engine is cold. It will also starts instantly after a five minutes sitting when warm. Will also starts instantly when turning off the engine and starting it back again immediately.
But if I try to start it let say after around thirty to forty five minutes when it has been sitting after driving (engine still l warm) it will crank a little more than usual before firing up.
Any conclusion out there please?
Thanks.

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,724 POSTS

Hi and thanks for using 2CarPros.

Honestly, if it isn't excessive, it may be normal. Often times, the engine coolant temperature sensor may be telling the computer it's warmer than it actually is. The result is a leaner fuel mixture which may cause a slightly longer crank time.

If it is excessive, let me know.

Take care,
JOe

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Tuesday, December 18th, 2018 AT 6:55 PM

RYANS79

MEMBER
2 POSTS

Can it be the MAP sensor too? I will remove the MAP sensor see if I can clean it. I will also try to turn the key on but without starting the engine and switch off and on second time turn it to start and fire the engine and see what it does. I will let you know ASAP.

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Tuesday, December 18th, 2018 AT 7:05 PM

JACOBANDNICKOLAS

MECHANIC
109,724 POSTS

Welcome back:
Sounds like a plan. The second idea you mention sounds like you are checking for fuel pressure drop off. I don't think that is the problem since it starts cold.

Let me know what you find.

Joe

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Tuesday, December 18th, 2018 AT 8:40 PM