4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Ticking caused failure, please help

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Old 01-29-2013, 06:25 PM
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Fafhrd
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Default Ticking caused failure, please help

I am thoroughly stumped here, and could use some advice.
10 days ago, I got the ticking described elsewhere, and resolved it by changing the timing chain tensionor and arm. It was the passenger side that failed. The ticking returned shortly after, but only at heavy rpm. Better, but I need to fix again. I babied the car for about 4 days, trying to keep the rpm in the quiet zone.
On the way home, I suddenly began running poorly with a huge loss of power. The oil gauge dropped to 0, but all other gauges looked fine. I turned a corner to park, and the car died. I coasted off the road. I tried the key and just got a heavy clunk/click. Towed home, tear it apart again.
Passenger chain was loose and had partially slipped off the arm. I believe I may have been given the wrong side, as I noticed it would have fit better if an aspect was just a bit longer, which wow, it was on the old original one. Anyways, a key test failed to do anything other than the clunk sound. Locked up. I pull the valve cover, looking very close at the springs and whatever I can see of the valves. Nothing looks bent, kinked or anything else. I pulled the plugs thinking maybe a flood of gas, but no pressure was released. I went ahead and took the chain completely off, hoping to free any top end damage from the crank. It still doesn't turn.
Please tell me it's something silly or stupid and not a crank bearing failure or some such. I have never heard anything from them before.
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Old 01-31-2013, 05:47 PM
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Anyone? I'm really stumped on this! 4.6, 2002 GT
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