Engine has trouble starting?

Tiny
BXNY1984
  • MEMBER
  • 2004 HYUNDAI TIBURON
  • 6 CYL
  • FWD
  • MANUAL
  • 54,000 MILES
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?
Thursday, June 17th, 2010 AT 6:34 PM

7 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
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)
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Friday, June 18th, 2010 AT 6:46 AM
Tiny
AUGDOG1
  • MEMBER
  • 1 POST
  • 2003 HYUNDAI TIBURON
  • 80,000 MILES
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.
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Monday, October 26th, 2020 AT 12:14 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Cannot clean mass air flow sensor.

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

Is the check engine light on?

Roy
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Monday, October 26th, 2020 AT 12:14 PM (Merged)
Tiny
BHFRIES
  • MEMBER
  • 2 POSTS
  • 2003 HYUNDAI TIBURON
  • 133,000 MILES
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
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Monday, October 26th, 2020 AT 12:14 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
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?
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Monday, October 26th, 2020 AT 12:14 PM (Merged)
Tiny
BHFRIES
  • MEMBER
  • 2 POSTS
Yes, the code comes up as a problem with the MAF sensor, so I replaced it all fixed!
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Monday, October 26th, 2020 AT 12:14 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
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Monday, October 26th, 2020 AT 12:14 PM (Merged)

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