Changed timing belt but car wont start

Tiny
BUMPASSE
  • MEMBER
  • 2006 KIA OPTIMA
  • 94,000 MILES
My daughter's car stalled at a light. SHe said she didn't hear anything that would indicate valve damage and when I inspected the timing belt, it was missing teeth, but seemed to still be maybe only a tooth off. I replaced the timing belt lining it up on the marks and installed the belt. I wanted to see if I had everything right so I put the crank pulley on and turned the car over. It cranked fine turned over fine for a couple revolutions, but it stalled on the next. I unplugged the coils and turned it over and it did just fine. Is it possible that the car is not firing correctly? The timing marks line up perfectly.
Saturday, September 24th, 2011 AT 1:27 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,053 POSTS
If the marks are correct and it started and ran good for a short time, I would say you did everything right. Will it try to start at all now? Have you checked to see if the fuel pressure is within spec, and the spark is a good hot blue snapping spark? I wouldn't think the timing belt jumpped again. You mentioned everything is still in alignment.

Check the spark and fuel pressure. If they are good, check the engine compression. Let me know what you find.

Joe
PS: If you have good spark and good fuel pressure, check the injectors to make sure they are getting power. Using a noid light or test light, the light should strobe on and off as the injector gets power.
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Saturday, September 24th, 2011 AT 2:52 AM
Tiny
BUMPASSE
  • MEMBER
  • 3 POSTS
I'm sorry, my statement was misleading, the engine turned over but the car did not start. When I had the coils hooked up, the engine turned over about 4 revolutions and then bogged down. I let off the ignition and it turned over a revolution or two and bogged down. When I unhooked the coils, it turned over fine as many revolutions as I held it.
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Saturday, September 24th, 2011 AT 2:00 PM
Tiny
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  • 3 POSTS
Added pictures to show timing
Image (Click to make bigger)
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Saturday, September 24th, 2011 AT 6:44 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,053 POSTS
What you are describing sounds like the timing is too advanced. What happens is the fuel is ignited while the piston is too low in the cylinder. As a result, it fires and basically stops the postion from going up. The cams look correct in the picture. Make sure the crank is good.
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Sunday, September 25th, 2011 AT 3:23 AM

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