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IrelandA Blackwing's misfire becomes detective work at Dave's Auto Center
Kyle finds an unidentified object holding an intake valve open in a Cadillac shipped from California.
Dave's Auto Center
Story of Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.
A 69,000-Mile Blackwing Shouldn’t Be Misfiring Like This
Next story: Dave's Auto Center questions a Tundra's $25,000 repair estimate
Things we can learn from the video
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- 13:36Dave argues that compression and leak-down testing should come before replacing parts to chase a misfire.
- 24:51Kyle feeds a borescope through cylinder four's spark plug hole to inspect inside.
- 25:17The camera reveals an unidentified black object wedged in an intake valve, preventing it from closing.
- 34:57Dave explains the engine-removal plan to Michael, including retrieving the debris and testing compression.
- 41:39The engine drop and extraction are reserved for part two.
The camera goes through the spark plug hole, and there it is: a hard, black object wedged in an intake valve. Kyle has found a physical explanation for the Cadillac's dead cylinder, but identifying the debris and getting it out will take more work.
That investigation made "A 69,000-Mile Blackwing Shouldn't Be Misfiring Like This" the most watched of Dave's Auto Center's four uploads this week, with more than half a million views. Owner Michael sent the CT6 from California after seeing the shop's earlier Blackwing video. Dave and Kyle start again with the diagnosis, eventually planning to drop the engine to reach the intake manifold.
The video includes a paid sponsor segment, but the repair story has its own interruption: extraction is saved for part two. Viewers are asking about that continuation, proposing ways to retrieve the obstruction and comparing notes on diagnostic work. One describes watching the channel like a television series with endless seasons. Dave also pushes back against blanket judgments about dealerships: "The dealers are as good as the independents, okay? It's the mechanic."
Elsewhere, an oil-covered Duramax from Oregon has become the channel's busiest individual video by daily views. The Tundra second-opinion investigation we covered earlier remains another substantial draw. A two-day SEMA visit took Dave away from the service bay, while a separate promotional upload featured automotive electronics.
Across the channel, daily viewing is close to its usual level, and subscribers grew over the week. Its roughly ten million weekly views were the largest total among the nearby-sized motoring channels here, with Gas Monkey Garage and LegitStreetCars also drawing substantial weekly audiences. For Dave's shop, the most absorbing new question remains a small one viewed through a borescope: exactly what is caught in that Blackwing valve?
Published on Trari
Where next?
What viewers say
I watch this channel like it’s a tv show, but with never ending seasons 😊
@flyinghigh5531See it on YouTubeNO way, we have to wait for a part 2 on this? Oh man! You're killin me Dave, but you know I will be here.
@BrianAzSee it on YouTubeSure wish I could have worked for a shop like Dave's when I was doing Flat Rate. Makes me want to go back to wrenching seeing how you treat your employees. I run a shop with 20 Techs of all skill levels and really try and run my program similar. Thanks for all you do for our industry Dave
@1heavywrenchSee it on YouTube
3 more comments
I had a dealer find a misfire and did the whole procedure just as you described, during the borescope check, they found a crack in block on a 5.0 coyote. They replaced the block under warranty, Ford headquarters in Dearborn even called and offered assistance to dealer and to me, extended my warranty and overall I was treated good. I'm glad there are good dealer service shops out there. 👍
@MegaDeth859See it on YouTubeLOL, Kyle has a great sense of humor. And he's a good mechanic. Another asset for the shop.
@PeterRoosSee it on YouTubeWhy not rotate the engine until the valves are open and try and pull the thing out from the spark plug hole with a little grabber? Worst case, you end up pulling the engine anyway.
@athalcSee it on YouTube
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- Channel
- Dave's Auto Center
- Subscribers
- 1,670,000 ▲ 10,000 this week
- Channel views, last 7 days
- 10,318,010
- Videos published this week
- 4
- Video published
- November 9, 2026
- Video views so far
- 541,661
- Views on its first day
- 300,248
The numbers
Here is how the channel's week looked in views and subscribers.
💡 Test your knowledge
Which event takes Dave away from the shop near the end of the Blackwing video?
Dave says he is leaving for SEMA, with the Blackwing's engine removal continuing in part two.