Rainman Ray catches a Silverado's lifter failing on camera
A borescope reveals a valve closing while the crankshaft stays still, turning a misfire diagnosis into a major repair decision.
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.
We found the real problem! Major Engine Repair needed! P0300 Misfire! Silverado 6.2 5.3 Misfire
Things we can learn from the video
Press to jump
- 6:12The scanner finds a random-misfire code, with stored history pointing strongly toward cylinder three.
- 10:30Ray explains why clearing trouble codes before a shop visit removes useful diagnostic evidence.
- 20:38A borescope through the spark plug hole lets Ray inspect the piston and intake valve.
- 24:05The valve closes with the crankshaft stationary, revealing lifter bleed-down.
- 29:38Repair choices range from replacing lifters to a broader engine-out camshaft swap and reseal.
The spark plug looks fairly normal. What happens behind it is another matter. In Rainman Ray's Repairs' only new upload this week, Ray feeds a borescope into a Silverado's cylinder and watches for the movement that will explain its rough running.
The truck arrived after a flashing check engine light, but the light isn't illuminated when Ray starts it. That makes the stored diagnostic history especially useful: the scanner points him toward one cylinder. His plea to owners is practical, not complicated: don't erase trouble codes before bringing the vehicle to the shop.
Then comes the revealing test. Ray turns the engine manually, watches the intake valve open, and sees it close again with the crankshaft stationary. The lifter is bleeding down. "Good science is measurable, observable, and most importantly, repeatable," he says. Several viewers single out this demonstration, discussing how clearly it makes the failure visible rather than merely naming a bad part.
The upload approached 100,000 views in its first fourteen hours and is comfortably the channel's busiest video right now. Older Pacifica coolant-leak work and the long-running Yukon repair story are also drawing views, though much more slowly.
Across the week, the channel added roughly half a million views while subscribers held steady. Daily viewing is below Ray's usual pace. Among nearby motoring channels, Pushing Pistons had a particularly busy week, while Sparks Motors was quieter.
For Ray, finding the fault isn't the end of the job. He lays out the customer's choices: replace the lifters with the heads removed, or undertake a much broader engine-out job. The diagnosis is clear; the scope of the repair needs a conversation.
Published on Trari
Where next?
What viewers say
I have never seen the lifter failure demonstrated or diagnosed this way. So exact. Great lesson.
@robertfoilesjr1337See it on YouTubeShowing us the operation of the lifter was great, this is why you are my favorite You Tube channel. Thanks Ray and team.
@ronniemullis8717See it on YouTube21:30 the cross hatching on that cylinder wall is amazing.
@davee5384See it on YouTube
4 more comments
I have two of those cigarette lighters...one says fire missiles, and the other one says ejector seat launch...lol
@hoosiertrucker191See it on YouTube0:14 yep this sounds like a average day at ray’s auto clinic on a filming day lol
@ICREFAN_OFFICIALSee it on YouTubeI was ordering food with your intro going 😂😂😂 I was so embarrassed
@veronly2See it on YouTubeFond memories with my old cigarette lighter, (cigar lighter in a Cadillac) burning my finger…
@waverider5751See it on YouTube
Public comments from the video's page on YouTube
The videos drawing views on Rainman Ray's Repairs right now
- Channel
- Rainman Ray's Repairs
- Subscribers
- 672,000
- Channel views, last 7 days
- 548,289
- Videos published this week
- 1
- Video published
- November 4, 2026
- Video views so far
- 99,074
The numbers
Here's how the week added up for Rainman Ray's Repairs.
💡 Test your knowledge
Which diagnostic tool lets Ray look inside the Silverado's cylinder?
Ray inserts a borescope through the spark plug hole to observe the cylinder and valve movement.



