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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Engine rattle/noise at start up
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<blockquote data-quote="smurfslayer" data-source="post: 1314359" data-attributes="member: 21926"><p>This has become the Gen2 boogeyman. </p><p></p><p>The rampant paranoia and misdiagnosis over the internet. A great deal of modern engines use the same style of ratcheting, oil pressure adjusted valve trains, practically all of them make some level of noise at start up, and possibly just after startup for a brief time. </p><p></p><p>There are Raptor users who have this brief startup valve train noise.</p><p>There are some of us who have prolonged rattle or noise after startup. </p><p>There are some of us who are hearing the injectors and associated noise and assuming the worst.</p><p>There are some of us with long lasting rattle that are truly failing cam phasers(?) and / or cam chain tensioner. </p><p></p><p>if the tensioner goes, or is going, you’ll potentially have a very noticeable stumble. </p><p></p><p>The issue can be legit, and it’s been present in -I think- every major Ford engine since the original OHC 281 V8. Ford does a lot of tear down and replacements that aren’t warranted because owners who have convinced themselves they have the issue, convince the s/a that the issue is there and the dealerships out of a customer goodwill concern, perform the repair. </p><p></p><p>There are also legitimate failures, some of the owners have posted videos of the persistent rattle or knock and it’s present from early startup through normal operation. Those are failing or possibly out of spec parts that probably do need replacing. </p><p></p><p>If you think you have the failing phasers or valve train rattle, do 2 things.</p><p>take video, save it / preserve it and document it with your service advisor. Play them the video. Make them document the concern. If it ever actually happens later in ownership, you can show that you raised this concern before and the dealership wrongfully dismissed it. If you’re not sure that you actually have the problem, you’ve already spent too much time concerning yourself with it while reading this post. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="smurfslayer, post: 1314359, member: 21926"] This has become the Gen2 boogeyman. The rampant paranoia and misdiagnosis over the internet. A great deal of modern engines use the same style of ratcheting, oil pressure adjusted valve trains, practically all of them make some level of noise at start up, and possibly just after startup for a brief time. There are Raptor users who have this brief startup valve train noise. There are some of us who have prolonged rattle or noise after startup. There are some of us who are hearing the injectors and associated noise and assuming the worst. There are some of us with long lasting rattle that are truly failing cam phasers(?) and / or cam chain tensioner. if the tensioner goes, or is going, you’ll potentially have a very noticeable stumble. The issue can be legit, and it’s been present in -I think- every major Ford engine since the original OHC 281 V8. Ford does a lot of tear down and replacements that aren’t warranted because owners who have convinced themselves they have the issue, convince the s/a that the issue is there and the dealerships out of a customer goodwill concern, perform the repair. There are also legitimate failures, some of the owners have posted videos of the persistent rattle or knock and it’s present from early startup through normal operation. Those are failing or possibly out of spec parts that probably do need replacing. If you think you have the failing phasers or valve train rattle, do 2 things. take video, save it / preserve it and document it with your service advisor. Play them the video. Make them document the concern. If it ever actually happens later in ownership, you can show that you raised this concern before and the dealership wrongfully dismissed it. If you’re not sure that you actually have the problem, you’ve already spent too much time concerning yourself with it while reading this post. :-) [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Engine rattle/noise at start up
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