Cranks but won't start

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.

5 Replies

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

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

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

MICHAELPE24