Gen 3 Coyote phasers wear their oiling passages — Ford wrote TSB 18-2354 and books eleven warranty hours for the fix. We replace all four phasers, the chains and the solenoids at your home, F-150 or Mustang GT.
The third-generation Coyote (2018–2022) runs four cam phasers — one per camshaft — to manage its dual variable cam timing. The Gen 3 phasers develop wear in their internal oiling passages, so at cold start, before oil pressure builds, they can't lock and they rattle against their stops. The signature is precise: a rattle that lasts roughly thirty seconds on a cold morning, then disappears as pressure comes up. Ford acknowledged the pattern in TSB 18-2354, and the warranty repair books eleven hours — a number that tells you how deep this job goes.
Alongside the noise, owners see cam timing codes — P0011, P0012, P0021, P0022 — and a subtle uptick in oil consumption as the worn phaser circuits bleed pressure where they shouldn't. The V8 still pulls hard once warm, which lulls people into living with the morning rattle for years.
The proper fix is all four phasers — replacing only the loudest one is a false economy when the other three have identical wear and the teardown is shared — plus the timing chains, guides, tensioners and VCT solenoids while the front of the engine is open. One deep job, done once.
If your Ford is doing any of these, this is the likely cause:
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Worn phasers bleed oil pressure and hammer their stops harder as the wear compounds — and behind them, chains and guides absorb the slack. The endgame on any neglected phaser failure is timing jump on an interference V8: bent valves and a bill several times the phaser job. Thirty seconds of rattle a day is the engine giving you fair warning.
Yes — the eleven hours is teardown depth, not facility requirement. The engine stays in the truck and the work happens at the front of it. We bring the cam timing fixtures, parts, fluids and lighting, plan for a long day, and your truck never leaves your driveway.
Eleven book hours at dealership labour rates, plus four phasers, chains, guides, tensioners and solenoids at retail — the math gets big fast. We quote one flat price for the complete job, all four phasers and the full timing set, in writing before any work starts.
Mechanically yes, practically no. All four phasers have the same hours and the same wear pattern, and the teardown to reach one is the teardown to reach all four. Replacing one means a strong chance of repeating this entire job within a year or two. All four, once, is the repair that holds.
Yes — TSB 18-2354 covers cold-start rattle on Gen 3 5.0 engines and specifies updated phaser parts and procedure. If your truck is past warranty, the TSB no longer pays for it, but it does define the right fix — and that's exactly the parts and process we use at your home.
Wonderful and quick experience, charged me way less than the dealer and he did the work in my driveway in the cold. I really appreciate all the hard work. — Verified Google review · 5.0 ★
Fares came by and did the brakes on my 2021 Lexus RX350. I got quoted way more at a shop so I decided to try a mobile mechanic instead. He showed up on time, did the work in my driveway, and everything went smoothly. — Verified Google review · 5.0 ★
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