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Cranks but won't start

Tiny
MICHAELPE24
  • MEMBER
  • 1994 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 208,000 MILES
I replaced the timing chain because it had been backfiring through the throttle body so I thought it was the timing chain was worn. Now it still won't start. Any suggestions on what it could be? It is getting fuel to the throttle body and it is getting spark.
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Monday, March 9th, 2009 AT 9:26 PM

5 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, with the engine cranking, you can see an injector spray pattern, TBI? Can you check for codes? When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

This guide can help us.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.

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Wednesday, March 11th, 2009 AT 12:27 PM
Tiny
MICHAELPE24
  • MEMBER
  • 3 POSTS
Yes I can see that it is getting fuel I figured out I am getting spark to the distributer cap but not to the plugs the cap and rotor are both new and new plug wires
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Wednesday, March 11th, 2009 AT 8:47 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, does the rotor turn when you crank the engine? If all those parts are new and the rotor turns, I don't know why you don't have spark at the plugs. If the rotor wasn't turning, I don't believe the injectors would pulse. No rpm signal.

Even if there is an injector spray pattern, that doesn't mean the pressure is ok. I've seen injector spray patterns that looked good to me, but the pressure was half of what it should have been.

Did you ever check for codes?
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Wednesday, March 11th, 2009 AT 11:02 PM
Tiny
MICHAELPE24
  • MEMBER
  • 3 POSTS
I figured it out it was a bad rotor. Got a new one this morning brought it home and put it in and the van started. Thanks for your time and help
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Thursday, March 12th, 2009 AT 10:24 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Glad you got it going.
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Thursday, March 12th, 2009 AT 11:51 AM

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