No start I have fuel but no compression?

2006 CHRYSLER 300
200,880 MILES • V8 • 2WD • AUTOMATIC
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LIKEMACK
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I have gone through everything I can think of, I have spark I have fuel but no compression this is a 5.7 hemi I have pulled just one spark plug per cylinder and there is nothing on compression on all cylinders. please help.
Sep 6, 2024 at 3:09 PM
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JACOBANDNICKOLAS
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Hi,

It is odd you would lose compression on all cylinders. I believe this engine is an interference engine, so there is a chance internal damage has occurred if the timing chain has broken.

This isn't an SRT, so the timing chain is straight forward. See pic below.

When this happened, was it all at once? Do any of the cylinders have compression?

Let me know. Also, let me know if there were any noises associated with the engine when right before it stopped running.

Joe

See pic below.
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Sep 6, 2024 at 8:49 PM
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LIKEMACK
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All intake valves seats came out.
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Sep 6, 2024 at 9:11 PM
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JACOBANDNICKOLAS
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Hi,

I have never seen that happen to all of them. Are both heads the same?

Joe
Sep 6, 2024 at 9:12 PM
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LIKEMACK
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Yes.
Sep 7, 2024 at 9:34 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Wow! I have never seen that. The only things I can think of that could cause it would be if there was a problem with extreme pre-ignition or a severe engine imbalance or misfiring condition. But even then, all at once is hard to believe.

I double checked if there were any technical service bulletins or recalls, and there were none. When this happened, were you driving? If so, was it running normally?

Let me know. This is an interesting one.

Joe
Sep 7, 2024 at 6:12 PM
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