2006 Hummer H3 3.5 5cyl - Part 4 - Autopsy to Pavement - Cylinder Head Swap
Channel: HouseCallAutoRepair
Date: 21/04/2024

From Autopsy to Pavement 

Tearing it down to the short block... Removing the rest of the timing components, and lifting off the head... and discovering the potential cause of the lack of rotation....
 Don't get me wrong... I REALLY love my Craftsman C-3 1/2" Impact, but It's getting old, and the only reason I don't replace it, is because it shares all the same C-3 batteries I use on everything else.... In the near future I may purchase a new, old-stock upgrade on the same C-3 platform.
 
This is Part 4 of a Multipart Series on a 2006 Hummer H3 with a 5 cyl 3.5L engine and a 5 Speed Manual Transmission. This vehicle refused to start, several years earlier, and just sat where it is, ever since. Total story unknown, the owner reached out to me and asked if I could help figure out why it "wouldn't turn over, even with a jump pack." Upon my arrival, he informed me that they had "gotten it to move a bit after working it back and forth with a breaker bar." (back AND forth is NEVER a good idea, as this can make timing components jump time. Either way, it still couldn't be rotated more than 270° (degrees of rotation) without, what felt like, a very solid stop. After another hour or so, and removing the spark plugs for visual inspection of the valves, no interference could be found. Being that this engine is a TOTAL PAIN IN THE BACKSIDE to do anything on, while in the vehicle, we opted to pull it and tear it apart to find out why.
Follow along to see how this engine went from "Autopsy to Pavement". 

All work performed in the owners open faced, dirt floor garage and carport.

"You've got no more excuses... Pick up those wrenches!"

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Auto repairs for the "Do-it-yourself" mechanic...  These "HOW-TO" videos, that help show viewers the details of what is involved in a specific repair... some do's and don'ts, as well as a variety of tips to make the repair easier.  Warning: Some videos may contain material that qualifies as "other than normally accepted".

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 I do most, if not all repairs, with tools that I carry around in my overloaded 1997 Crown Victoria Police Interceptor. I perform "On-Site" braking and suspension repairs, amongst other diagnostics and services. My tools consist mostly of Craftsman, a few Stanley, Snap-On, Husky, Pittsburgh, and S&K tools. Scan tools include hand held Actrons, DVOMs, and test lights. I also currently use a Zurich ZR Pro, for advanced and bidirectional diagnostics as well as a Snap-On Verus Pro, for more detailed diagnostics.  I'm always expanding my collection, based on need and convenience.

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