engine has trouble starting?

2004 HYUNDAI TIBURON
54,000 MILES • 6 CYL • FWD • MANUAL
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BXNY1984
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First is when i go to start the car first thing in the morning it starts up just fine. When I have driven to wherever I am going to and go to start my car again it takes longer to start like if it has trouble starting.

Second is when I am at idle at let's say a stop light it idles rough. It feels as if the engine is about to shut off but never does. I don't get any CELs. What could be the problem and what do i do to fix it?
Jun 17, 2010 at 6:34 PM
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MHPAUTOS
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Hi there,

Always start with a full tune up when faced with this type of problem, also i would be checking for a vacuum leak and have the base idle checked this guide can help us find the problem

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

Please run down this guide and report back.

mark (mhpautos)
Jun 18, 2010 at 6:46 AM
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AUGDOG1
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i have a 2003 hyundia tiburon v6 2.7 its hard to start hot or cold if you crank it and open the throttle just a little it starts but smells and acts flooded for a few seconds then runs fine ,changed tps,plugs,filter,and cleaned maf sensor with sensor cleaner any ideas would help thanks.
Oct 26, 2020 at 12:14 PM (Merged)
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ASEMASTER6371
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cannot clean mass air flow sensor.

typically, the idle air control does this when it is failing.

is the check engine light on??

Roy
Oct 26, 2020 at 12:14 PM (Merged)
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BHFRIES
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my car cranks a long time before it starts, my gas mileage has gone down, and any time after filling up it has even more trouble starting. once its started everything runs fine, and you can restart it with no problem..but any time it sits for a while it has issues
Oct 26, 2020 at 12:14 PM (Merged)
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JACOBANDNICKOLAS
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Have you checked to see if the fuel pressure is dropping off to 0psi when the engine is shut? If it is, that could cause it to be harder to start. Also, has the check engine light come on?
Oct 26, 2020 at 12:14 PM (Merged)
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BHFRIES
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yes, the code comes up as a problem with the MAF sensor, so I replaced it all fixed!
Oct 26, 2020 at 12:14 PM (Merged)
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JACOBANDNICKOLAS
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Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
Oct 26, 2020 at 12:14 PM (Merged)