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1993 Chev S10 2.8L no start even after new timing chain

1993 Chev S10 2.8L no start even after new timing chain

This topic has 3 replies, 2 voices, and was last updated 4 years, 7 months ago by Richard Kirshy.

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September 4, 2019 at 4:22 pm #894424
William
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Hello all,

This S10 stopped on the road and never cranked up again. Compression test gave up to 30 PSI on all cylinders. So I replaced the timing chain and cam/crank sprockets. Old chain was quite loose and of course the scoring and wearing as you’d expect. Only the truck still does not start. It just spins. I will attach a video here of before the timing chain but the behavior after the repair is quite identical.

I felt no resistance turning the engine by hand, I’m just a little iffy on whether the issue was the chain or not vs. an ignition component. There is spark and there is fuel.

I have a thread on 2CarPros.com about this but sometimes I get mixed information/signals from them so I’m searching for other opinions

Hopefully this video will show up https://www.2carpros.com/images/question_images/282693/video.mp4
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September 4, 2019 at 10:59 pm #894426
Richard Kirshy
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Try a leak down test to locate the compression loss.
September 5, 2019 at 4:01 am #894427
William
Participant
Okay, the compressed air would not hold and just came right out of the tailpipe with the smell of fuel
September 5, 2019 at 6:17 am #894428
Richard Kirshy
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if you confirmed that both valves were closed on the cylinder(s) when you tested.
You may have either :
Damaged valve, seat or both.
Cracked head
Cracked block
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