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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Cam phasers in your garage
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<blockquote data-quote="rando_marsh" data-source="post: 1902207" data-attributes="member: 66381"><p>2018 F150 with 2nd Gen 3.5L Ecoboost. Unfortunately not a Raptor: please don't get out your torches, this is one of the best writeups I found for the engine. I'm aware the Raptor engine is high output but from what I gather the timing system is virtually identical.</p><p></p><p>The short story for the chains is because the dealer said so after an issue I had, but since I'm out of warranty and a decent wrench I don't want to pay for the labor.</p><p></p><p>The long story is my truck developed cam phaser rattle on cold starts this winter, and I noticed a very intermittent rough idle upon deceleration after sustained highway speeds (maybe once or twice a month of daily driving). I'm not a regular on forums and back when I bought the truck (almost) new, the research I did hyped up the 2nd gen 3.5L as having fixed the rampant timing issues from Gen 1. Unfortunately it seems the intervening years since I bought the truck have revealed cam phaser issues for Gen 2 as well, but I remained blissfully ignorant until now. Admittedly I didn't do much research on my issues this winter, I had a newborn to take care of. CEL gave me a wakeup call during a rough idle episode last month with P0018 and P0021, and I finally did a deep dive and learned all about cam phasers etc. I found a specific thread somewhere where someone posted the official Ford diagnostic procedures for the codes I got, indicating that a possible cause could be stretched timing chains or broken timing chain guide. I think I hear chain slapping on a cold start plus the phaser rattle, so I had a dealer look and they confirmed chain issues. I've got over 63k miles, so out of warranty.</p><p></p><p>Turns out I've also been a bad boy with my oil change interval of 7.5-10k, so I'm tearing this beast down and changing all the timing components. Then I'll be a good boy from here on out until I trade it in: 2 generations of constant timing component issues that require what I consider obsessive levels of preventive maintenance (3k OCI, really?) have soured me on the Ecoboost and probably Ford in general.</p></blockquote><p></p>
[QUOTE="rando_marsh, post: 1902207, member: 66381"] 2018 F150 with 2nd Gen 3.5L Ecoboost. Unfortunately not a Raptor: please don't get out your torches, this is one of the best writeups I found for the engine. I'm aware the Raptor engine is high output but from what I gather the timing system is virtually identical. The short story for the chains is because the dealer said so after an issue I had, but since I'm out of warranty and a decent wrench I don't want to pay for the labor. The long story is my truck developed cam phaser rattle on cold starts this winter, and I noticed a very intermittent rough idle upon deceleration after sustained highway speeds (maybe once or twice a month of daily driving). I'm not a regular on forums and back when I bought the truck (almost) new, the research I did hyped up the 2nd gen 3.5L as having fixed the rampant timing issues from Gen 1. Unfortunately it seems the intervening years since I bought the truck have revealed cam phaser issues for Gen 2 as well, but I remained blissfully ignorant until now. Admittedly I didn't do much research on my issues this winter, I had a newborn to take care of. CEL gave me a wakeup call during a rough idle episode last month with P0018 and P0021, and I finally did a deep dive and learned all about cam phasers etc. I found a specific thread somewhere where someone posted the official Ford diagnostic procedures for the codes I got, indicating that a possible cause could be stretched timing chains or broken timing chain guide. I think I hear chain slapping on a cold start plus the phaser rattle, so I had a dealer look and they confirmed chain issues. I've got over 63k miles, so out of warranty. Turns out I've also been a bad boy with my oil change interval of 7.5-10k, so I'm tearing this beast down and changing all the timing components. Then I'll be a good boy from here on out until I trade it in: 2 generations of constant timing component issues that require what I consider obsessive levels of preventive maintenance (3k OCI, really?) have soured me on the Ecoboost and probably Ford in general. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Cam phasers in your garage
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