Built Not Bought finds the fault in its Cummins Cruiser
A failed high-pressure fuel pump explains the starting trouble as Sam Eyles works towards a dyno run and touring fit-out.
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.
CUMMINS 79 Build - Did We Just Get Catastrophic Enginer FAILURE?!
Video summary
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- 2:08Sam visits Mitch Farrow to inspect the custom bull bar and winch cradle.
- 4:10The mechanics work on throttle-pedal wiring and fabricate a sensor mount.
- 7:29A transmission-calibration trip runs into renewed engine-starting trouble.
- 12:12Sam reassembles the front end, airbox and snorkel, then installs the aluminium bull bar.
- 15:32Mitch explains the failed high-pressure fuel pump.
- 17:21The Cruiser reaches the dyno before heading for its touring-accessory fit-out.
The pump had failed. After wiring checks, throttle-pedal work and lengthy remote troubleshooting, Mitch at Creek 2 Coast Mechanical identifies the high-pressure fuel pump as the problem in Sam Eyles' Cummins-swapped Land Cruiser.
That gives Built Not Bought's only new upload of the week an answer to its worried title, "CUMMINS 79 Build - Did We Just Get Catastrophic Enginer FAILURE?!" The episode has reached roughly 139,000 views, following Sam through the less glamorous work of getting a heavily modified vehicle to behave. A trip to calibrate the eight-speed automatic is interrupted by starting trouble; back in the garage, heavy rain accompanies the front-end reassembly and aluminium bull bar installation.
Eventually, the Cruiser reaches the dyno and then heads off for its tent and awning fit-out. Beneath the video, viewers are picking out the details that make the build theirs to follow: the interior, the tray, the exhaust exit and the height of the tent rack. Several also mention seeing the fixes alongside the mistakes, rather than just a polished finished truck.
The new episode is the channel's busiest video each day, with the earlier tray-installation outing, "I BUILT AUSTRALIAS TOUGHEST FARM TRUCK", next among its active uploads. Across the channel, daily views are below their usual pace and subscribers were unchanged over the week. Its weekly audience sits close to Big Car's, while MattieFlips had a substantially larger week.
For Sam, the practical progress is more specific: the Cruiser has moved from refusing to start to producing a dyno sheet.
Published on Trari
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What viewers say
Best part of the build is all the little details - back of the tray, exhaust exit, height of the tent rack, roof lights. So much thought and planning goes into these things and combined they are what makes it unique to everything else out there.
@tomandsarahdirkis7370See it on YouTubeThe favourite part was your honesty with the build. Not everything went right but you showed us what you had to do to fix it and got it done!!
@danbell9792See it on YouTubefavourite part of the build gotta be the interior. The alcantara just looks so cleannnn
@c.Holmes-s2wSee it on YouTube
3 more comments
My favourite part of this build is that it gave us the old Sam back. It was like watching the 80 get built all over again.
@ThebiggqSee it on YouTubeMy favourite part of this build is that tray. It just ties the truck together so nicely 🔥
@Nockers952See it on YouTubeHonestly you’ve nearly changed my mind on this facelift front end with this so I feel that’s my favourite part but probably more than that way you shoot and capture the journey good bad and the ugly, it’s cool to see these builds come to life without it seeming like a tv show
@Instinct_mediaSee it on YouTube
Public comments from the video's page on YouTube
The videos drawing views on Built Not Bought right now
- Channel
- Built Not Bought
- Subscribers
- 286,000
- Channel views, last 7 days
- 176,927
- Videos published this week
- 1
- Video published
- November 3, 2026
- Video views so far
- 138,702
- Views on its first day
- 80,385
The numbers
Here is how Built Not Bought's week looks in views and subscribers.
💡 Test your knowledge
How many forward speeds does the automatic transmission in Sam's Cummins Cruiser have?
Sam introduces the rebuilt 79 Series as pairing its Cummins engine with an eight-speed automatic transmission.



