Car turns over, but will not start

Tiny
SHURE WALKER
  • MEMBER
  • 2003 HYUNDAI TIBURON
  • 4.7L
  • V6
  • MANUAL
  • 144,700 MILES
I had bought six new spark plugs, (manual recommended) new plug wires, and cylinders one and three was still misfiring. So I got new cylinders and car ran great! Only for about four day's though. All of the sudden car started lugging down and running rough again. Now, it will not start at all. It died out while driving and my dad started pulling it back to my house with a rope during the tow I tried starting it and it did start. I drove it the rest if the way home. But now, all it will do is turn over, but wont start. When I turn the key off after cranking it, it sounds like it was going to start, it makes this weird puffing sound (I wish I could describe it better) kind of like a big puff of air escapes from the engine and out the muffler or something, then it just dies.
I am at a loss, I cannot think of what it could be! Oh, one thing I have not mentioned, do not know if this would have anything to do with what it is doing now, but, I have not had an air filter on my car for quite some time now. I know, that is not good.
Tuesday, November 15th, 2016 AT 12:05 AM

7 Replies

Tiny
SHURE WALKER
  • MEMBER
  • 4 POSTS
I am sorry. I need to correct something. Car is a 2.7 v6. Not a 4.7. Thank you.
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Tuesday, November 15th, 2016 AT 1:22 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fuel pressure with a gauge auto parts rent it. Check out this link.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, November 15th, 2016 AT 6:32 AM
Tiny
SHURE WALKER
  • MEMBER
  • 4 POSTS
There are no coded because the battery has been disconnected while working on it, and it wont start to run to show any codes, otherwise I would have already done that.
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Tuesday, November 15th, 2016 AT 10:38 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then try resetting security system it may be because you disconnected battery. See the link.

https://www.2carpros.com/articles/how-to-reset-a-security-system
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Tuesday, November 15th, 2016 AT 10:43 AM
Tiny
SHURE WALKER
  • MEMBER
  • 4 POSTS
It has nothing to do with the security system.
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Tuesday, November 15th, 2016 AT 5:40 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Did you check the fuel pressure or maybe even go through the security system motions suggested by HMAC300?

The Medic
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Tuesday, November 15th, 2016 AT 6:09 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Funny thing, even if a light is not on security will shut the car down so at least try the reset that I sent to you then get back to us.
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Wednesday, November 16th, 2016 AT 6:49 AM

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