Ford Authority

Ford F-150 3.5L EcoBoost Rattle Fix Detailed By Tech: Video

Ford technician and YouTuber Ford Tech Makuloco routinely cranks out interesting and informative videos that focus on issues pertaining to a wide variety of Blue Oval models, including a number of general Ford EcoBoost problems, a common Ford 2.0L I-4 EcoBoost coolant issue, coolant intrusion issues with the Ford 1.6L I-4 EcoBoost, and a problem with the Ford F-150 remote start feature. Now, our resident technician is back with a new video outlining how to diagnose and fix a rattling issue with 2017-2020 Ford F-150 pickups equipped with the twin-turbocharged Ford 3.5L V6 EcoBoost engine.

In this case, a 2019 Ford F-150 has arrived at the shop in need of a total timing set rebuild, which makes for the perfect opportunity to discuss this common rattling issue. The first-generation version of the 3.5L EcoBoost had its fair share of problems, as our technician explains here, so the second-gen version – which debuted in the 2017 F-150 – corrected most of those, save for the phasers, which have been a problem in a number of other engines as well.

On this particular engine, the phasers are coming apart on the inside and they’re no longer locking to the camshafts. Problem is, after the engine has been sitting for a while, this leads to a loud startup rattle. Luckily, Ford has an extended warranty covering this problem, but in many cases, dealers or even independent shops simply replace the phasers with ones utilizing the same old, defective design.

This is an important tidbit of information for anyone facing this kind of problem, as they’ll want to make sure that their truck is treated to the newer phaser design, which won’t lead to the same issue reoccurring later on down the road, particularly since replacing those parts is a labor intensive, time-consuming job.

We’ll have more videos like this to share soon, so be sure and subscribe to Ford Authority for the latest Ford F-Series news, Ford F-150 news, and continuous Ford news coverage.

Brett's lost track of all the Fords he's owned over the years and how much he's spent modifying them, but his current money pits include an S550 Mustang and 13th gen F-150.

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  1. Rob

    It’s not just Ford Toyota has variable timing gears that are coming apart and not locking the same

  2. Rick Jones

    What is being done with typewriter syndrome on the late 5.0’s. I have a ’18 that sounds terrible and only 7K miles.

  3. Glenn Strvenson

    Does the repair require two different phasers / part numbers or are both sides the same part number ? My repair only lists one of the serial numbers that you show in the video.

  4. Walt Mullins

    No more Ford’s until they fix the random theft prevention system. I have a 98 F150 and a 2013 Fusion that go into theft mode at anytime. Nice coming out of the grocery store and there it sits all locked down or in your driveway. Reset procedures are confusing and only work some of the time. Very frustrating. Have researched possible ways to bypass but no one has said they work and don’t create different problems. All auto manufacturers have gone nuts with electronics. How aboutba no electronics frills as an option? I think they’d be surprised at demand. Bring back 1985… No b.s. just a fuel injected, power steering_ power brakes_ air conditioning and a choice of standard or automatic transmission. . .and an am/FM CD player radio. No touch screen anything. If I had the financial backing I would manufacture a J.T. car and truck. J.T. meaning just transportation.

  5. Barrett FL

    We recently purchased a new 2022 Ford Explorer Limited with the 2.3 liter engine and it too sounds like a sewing machine or type writer when accelerating from a stop. I came here hoping it was an anomaly, however, it appears it’s normal and I’m stuck with it…

    Does the 3.3 make the same sound?

  6. Richard Jensen

    Fords are junk

  7. TomD

    And why should need to purchase the extended warranty to get it fixed?
    This is an engineering screw up, Ford should pick the freight on these problems not the owners.

    1. Min. Earl R

      That would be nice. I have a 2018 Ecoboost F150 with 121k miles and it just started that same problem. Luckily I bought an extended warranty so I’m gonna have it done. Hopefully they will use the new phasers.

  8. Fernando Rodriguez

    What about the Raptor 6.2L? Does it has the same problem of the F150 3.5L EcoBoost engine?


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