No start I have fuel but no compression?

LIKEMACK

MEMBER
2006 CHRYSLER 300
V8
2WD
AUTOMATIC
200,880 MILES

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.

Friday, September 6th, 2024 AT 3:09 PM

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,874 POSTS

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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Friday, September 6th, 2024 AT 8:49 PM

LIKEMACK

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18 POSTS

All intake valves seats came out.

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Friday, September 6th, 2024 AT 9:11 PM

JACOBANDNICKOLAS

MECHANIC
109,874 POSTS

Hi,

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

Joe

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Friday, September 6th, 2024 AT 9:12 PM

LIKEMACK

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Yes.

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Saturday, September 7th, 2024 AT 9:34 AM

JACOBANDNICKOLAS

MECHANIC
109,874 POSTS

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