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Re: Effect of broken Valve spring versus a broken Rocker
Posted to Technical Discussion Forum on 8/29/2008 2 Replies

Michael here is an fls look at a broken exhaust spring at #4 on an 04 5.4 ford. Notice the intake pressure climbed from about the time the intake valve opened until it closed. The engine is only running at about 510 rpm.

[2004 Ford Pickup F150, Engine/Propul... Login to read more.

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