i have replace the spark plugs and the wires and also the cooland sensor and clean some other parts and still doing the same can someone with the same problem help, thanks

25

Asked by Jan 28, 2014 at 08:38 PM about the Hyundai Tiburon

Question type: Maintenance & Repair

8 Answers

18,445

What is it doing and is the check engine light on?

1 out of 1 people think this is helpful.
105,785

Sounds like fuel pressure regulator is going bad.

1 out of 1 people think this is helpful.
Best Answer
25

no check engine light on, i took it to the dealer and they cant find the problem, its that when i start the car sometimes it starts right away and sometimes it cranks like for 15 or 20 sec and then it starts and i dont have no issues with it runs and drives perfect.

1 out of 1 people think this is helpful.
25

do u mean the fuel pump?

1 out of 1 people think this is helpful.
25

but the only thing that its doing is when it starts after that runs really good

25

i took it to hyundai dealer and the cant find the problem so far

105,785

No not the fuel pump. Sure sounds like your fuel pressure is dropping when it's been turned off for a while and the fuel pump has to pump for a bit to regain the fuel pressure. Typically this is caused by a faulty fuel pressure regulator. When faulty it will bleed off the fuel pressure when vehicle is turned off.

105,785

Also check your oil. Does it smell like gas? If so it could be a fuel injector stuck open and bleeding the fuel pressure off when vehicle is not running.

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