Underground Automotive

03/15/2026

With The Noob Mechanic – I'm on a streak! I've been a top fan for 8 months in a row. 🎉

01/30/2026

Saved another Cummins from the disaster that can happen from the failure of heater grid bolt falling off into the engine. Call us for the repair solution before you might have a engine failure

01/30/2026

Working on a engine with a ticking noise...3.6 Chrysler engine. I think we found the issue..

01/30/2026

When you are traveling and trying to get back to California with a Bentley on this tow truck. You are definitely stuck until we help you get back on the road.
This wheel bearing failed on there trip.

11/22/2025

Camshaft failure...
We can't stress it enough... maintenance is key to the survival of modern engines.

11/19/2025

Don't know if you can tell but the grayish area is on a oil pan of a f550 6.7 power stroke. It's always easier to just jb weld apoxy it and keep on rolling...
Until it looses the engine oil...

We found this and informed the new owner of the truck... The previous owner didn't disclose that the truck had a hole in the oil pan. At this point it's time for a cab up and new Ford oil pan and repair for the correct repair..

11/19/2025

Well crap.... LOTS of questions come up with a cracked piston....

What caused it?
Did it over heat?
Bad fuel?
Maintenance up to date???
Hot tune??
To much egts,
Or just to much fuel?

Well most of all listed can be the cause. BUT injector sticking and turned in to a torch. (See melted piston)
Then cylinder pressure was extremely high and very high egt's. This is when you need a good time and great tech to inform, and maintain your truck.

11/16/2025

11/04/2025

Old-fashioned? Maybe. But it sure worked.