Can anyone identify this loud tapping after fuel hydrolock?

L31MaxExpress said:

This one hydraulic locked on coolant from a leaking head gasket as well. Notice the wavy rod. Starter motor did that.

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PlayingWithTBI said:

Hell, just pull the rod out, heat it up cherry red, lay it on an anvil, pound it flat, and send it!

Sorry, I couldn't help it

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L31MaxExpress said:

You need a long block or at the very least a short block. Regardless of what a compression test shows, that one is hurt. I would not even bother with a compression test, just get straight to pulling it out of the truck.

If you are super lucky it just broke the flexplate, but that sounds like severe rod knock to me, perhaps even a broken rod slapping around.

When my 97 hydraulic locked at 57K on startup from bad intake gaskets it completely grenaded the thing. Broken rods, shattered piston, cam broken in 3 pieces, hole in #2 cylinder wall and multiple holes in the oil pan.

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L31MaxExpress said:

This one hydraulic locked on coolant from a leaking head gasket as well. Notice the wavy rod. Starter motor did that.

You must be registered for see images attach

Click to expand...

zzyzx said:

Ok. I didn't even consider the flex plate. I'll have to check that. It seems to idle smooth beside the horrible noise. What's a good source for stock short blocks?

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PlayingWithTBI said:

Hell, just pull the rod out, heat it up cherry red, lay it on an anvil, pound it flat, and send it!

Sorry, I couldn't help it

Click to expand...

Hipster said:

yep, seen that many times in marine apps with shot exhaust logs.

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zzyzx said:

Tempting. There's a good chance I'm replacing a single connecting rod and seeing what happens. A piston if I'm feeling spendy.

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zzyzx said:

What's a good source for stock short blocks?

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