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Let’s guess what is broken - updated

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Old 08-28-2019, 06:07 PM
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Default Let’s guess what is broken - updated
Was getting the car tuned and everything was “going well”. Tuner was going around the block cleaning up the cruising AFR and this noise came in. He shut it down and rolled into driveway.

Can’t pull the valve covers till Later tonight after work
Last edited by j-mart32; 08-30-2019 at 09:17 PM.
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Old 08-28-2019, 06:13 PM
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Intrigued..
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Old 08-28-2019, 06:17 PM
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Left rear taillight is out
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Old 08-28-2019, 06:22 PM
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Old 08-28-2019, 06:24 PM
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Video posted. Sorry on delay, new to vids and doing this via phone
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Old 08-28-2019, 06:32 PM
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Sounds like a valve event... something top end. Maybe a broken spring or rocker arm.
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Old 08-28-2019, 06:37 PM
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Im going rocker arm came loose.
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Old 08-28-2019, 06:37 PM
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Originally Posted by s30.hybrid
Sounds like a valve event... something top end. Maybe a broken spring or rocker arm.
Agreed. Sounds like it’s half the speed of the engine so hopefully it’s top end.
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Old 08-28-2019, 06:51 PM
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I’m hoping top end and something stupid. The noise is a hollow sound and rhythm is weird for sure. It had been making good pulls with no issues and then did this at 17% throttle 🤦🏻dum♂️
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Old 08-28-2019, 06:55 PM
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I should include that it’s a decent top end. Jesel rockers, pac 1208x springs, motel 5850 lifters. Hoping rocker is loose like someone mentioned
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Old 08-28-2019, 09:50 PM
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Another question for when I get home to check it out some. If the top end looks ok, I’m gunna disconnect the coils/ injectors and turn it over. How much oil pressure should I see when cranking the engine over?
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Old 08-28-2019, 10:33 PM
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With the spark plugs out I usually see 35-50 on used engines.
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Old 08-28-2019, 11:05 PM
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Originally Posted by LLLosingit
With the spark plugs out I usually see 35-50 on used engines.
How about with plugs in, coils disconnected ?

headed home now to start checking stuff. Starting at flex plate/ bolts
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Old 08-29-2019, 12:59 AM
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Old 08-29-2019, 07:46 AM
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This is why stock rockers >
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Old 08-29-2019, 08:28 AM
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Originally Posted by Mavn
This is why stock rockers >
We don't need no mountain lift and rawkers....stock FTW.
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Old 08-29-2019, 08:44 AM
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Old 08-29-2019, 09:48 AM
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Originally Posted by j-mart32
Thats pretty crazy. I wonder how that could have happened.
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Old 08-29-2019, 10:12 AM
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Originally Posted by KCS
Thats pretty crazy. I wonder how that could have happened.
You and me both. Trashed three of them. Shaft was snapped and so was the top of the bolts so they are still in there.

Hoping the damage is limited to here though, and the cam is OK
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Old 08-29-2019, 10:30 AM
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Maybe Jesel had a bad day when those were made...
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