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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Cam Phaser/ Engine Failure Poll
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<blockquote data-quote="FordTechOne" data-source="post: 1444298" data-attributes="member: 35543"><p>What you are most likely hearing is turbocharger wastegate rattle (normal) or the High Pressure Fuel pump (HPFP). The wastegate rattle disappears as the metal components expand due to heat, and the HPFP quiets as the engine idles down. Combine that with the cold start emissions strategy (catalyst light off requirement within XX time) and there are a lot of systems operating at once. Its the norm for any modern turbocharged direct injected engine, however the noises tend to be more audible on pickups due to the open inner fender wells.</p></blockquote><p></p>
[QUOTE="FordTechOne, post: 1444298, member: 35543"] What you are most likely hearing is turbocharger wastegate rattle (normal) or the High Pressure Fuel pump (HPFP). The wastegate rattle disappears as the metal components expand due to heat, and the HPFP quiets as the engine idles down. Combine that with the cold start emissions strategy (catalyst light off requirement within XX time) and there are a lot of systems operating at once. Its the norm for any modern turbocharged direct injected engine, however the noises tend to be more audible on pickups due to the open inner fender wells. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Cam Phaser/ Engine Failure Poll
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