Review on 🔧 Ford Cylinder Head Spark Plug Repair Kit - Mountain Alloy Steel Insert for Swift Replacement by Shah Nelson

I've worked with cars my whole life, I'm an ASE certified master mechanic and this product is great. This allows you to repair the spark plug threads in the head without removing the head, saving customers hundreds of dollars, not to mention downtime. They use a piece of 3/8" vinyl tubing about 16" long taped to a crevice tool and vacuum to suck up sawdust instead of air, which I believe only results in dirt getting stuck between the piston and cylinder wall remains. If you have access to an endoscope, you can see that the vacuum cleaner does an excellent job of removing sawdust.