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

Valve Train Noise

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Old 12-23-2012, 07:10 PM
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2001Supercharged GT
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Default Valve Train Noise

I have a 2001 GT with a Vortec supercharger, bigger injectors, larger fuel pump, full exhaust, and a built ECU. There is a noice comming from the engine, almost sounds like a raddle or a grinding. Could it be the rockers comming loose? Or the lobs on the cam going flat? anybody have a problem like that, or know what could be causing it?
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Old 12-23-2012, 10:43 PM
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go-part
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http://img688.imageshack.us/img688/76/stngh.jpg

Hopefully this is the solution to your problem
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Old 01-06-2013, 04:08 PM
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It's not a Cobra motor. It's a SOC motor and the noise only happens at the higher rmp's anything above 4,000
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Old 01-06-2013, 05:21 PM
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JC316
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Probably a hydraulic lash adjuster. Basically like a lifter.
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Old 01-06-2013, 11:48 PM
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I had a noise like that once. Mine ended up being the timing chains were stretched out and loose. There were marks on my timing cover from the chain hitting it. Once I replaced the chains, chain guides, and chain tensioners the noise went away... It was a good time for a PI swap for me, too.
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