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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Slight Knocking sound at start up
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<blockquote data-quote="Bill_C" data-source="post: 562068" data-attributes="member: 12888"><p>I would agree with Got Exhaust. My soon to be gone 5.4 does the same thing in the morning. It sounds like lifter tap from the lifters bleeding down. This sound is nothing compared to starting up a 7.3 power stroke in the middle of winter with 20w50 oil in it. Mine used to sound like the engine was coming apart. Especially when it was below 0 and you turned the key and you could almost hear each individual cylinder start to fire. Talk about a racket.</p></blockquote><p></p>
[QUOTE="Bill_C, post: 562068, member: 12888"] I would agree with Got Exhaust. My soon to be gone 5.4 does the same thing in the morning. It sounds like lifter tap from the lifters bleeding down. This sound is nothing compared to starting up a 7.3 power stroke in the middle of winter with 20w50 oil in it. Mine used to sound like the engine was coming apart. Especially when it was below 0 and you turned the key and you could almost hear each individual cylinder start to fire. Talk about a racket. [/QUOTE]
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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Slight Knocking sound at start up
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