1995 Hyundai Elantra Fuel shooting out of spark plug tube

Tiny
CLEWIS1529
  • MEMBER
  • 1995 HYUNDAI ELANTRA
  • 4 CYL
  • 2WD
  • MANUAL
  • 80,000 MILES
I have a 95 hyundi elantra 1.6l and it is shooting gas out of the spark plug tubes. A shop told my nephew that his engine was locked up and needed to be replaced. I towed it to my shop and took the plugs out and turned it over. When I did gas shot out of the tubes in large volumes. I thought at first it might be the fuel pressure regulator and replaced it and changed the oil due to the gas running down into the oil pan. I then turned over the engine and everything seemed fine but it started shooting gas out again. Any Ideas? I have never seen a car do this.
Friday, March 26th, 2010 AT 10:06 AM

5 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi clewis1529,

Thank you for the donation.

The fuel injector of the cylinder in question is stuck in the open position and is dumping fuel into the cylinder when the engine is being cranked.
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Friday, March 26th, 2010 AT 10:40 AM
Tiny
CLEWIS1529
  • MEMBER
  • 3 POSTS
The problem is that it is all 4 cylinders that this is happing to. I could see if it was one or 2 injectors but all 4? I'm trying to find a place that I can check the fuel pressure at so I will have that shortly. I need to find out why all four are in the full open position and I just don't really know where to start.
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Friday, March 26th, 2010 AT 11:12 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Disconnect the fuel injector injector wire harness and retry. If problem persists, then you could have all 4 injectors open. If problem goes away, you might have a faulty PCM.
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Friday, March 26th, 2010 AT 11:20 AM
Tiny
CLEWIS1529
  • MEMBER
  • 3 POSTS
Thanks for the help. I disconnected the injector plugs and it stopped so i'm leaning towards a bad engine controller. He had the main fuse go out not too long ago and I wonder if that has anything to do with it. Do you by chance know where the pcm is located in this car?
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Friday, March 26th, 2010 AT 1:34 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The main fuse going out should be due to a shorting somewhere and it can cause the ECM to go bad.

The ECM ( is known as ECM and not PCM as the transmission control unit is separated from it) is located at left side of dash.


https://www.2carpros.com/forum/automotive_pictures/192750_Dashcomp96ElantraFig02_1.jpg

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Saturday, March 27th, 2010 AT 3:12 PM

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