Lisle 55250 Carburetor Adjusting Tool: Precision Tuning at Your Fingertips Review

Great inexpensive carburetor timing tool. It is sold for Rochester Quadrajets with jet selection but will also work with other makes/models of carburetors with the correct jet.

It was able to adjust the idle screw on the carburetor on my Chevy C20 truck. Came with a double D adapter. Wish it had a magnetic tip instead of a friction lock.

Works well when you attach outlets. The o-ring used to hold the bushings on the flex shaft is not lubricated and the bushings will not work until I put some oil on the o-ring. Then everything was fine. Makes setting up my Q Jet easier. It would also be nice if you could save the beats in the pen.

Ideal for adjusting double D-Quadrajet mixer screws on '79 carburetors with capped mixer screws. The caps can be removed with a dremel, a small chisel, a small punch and some patience. Attempting to drill or grind the caps is nearly impossible as they are made of hardened steel.

Purchased for Rochester 2G 2 Barrel Adjustment. After decades of using a screwdriver to adjust my carburetor, I kick myself for not buying this sooner. It takes some getting used to. A screwdriver on a flexible shaft looks a little strange when you first turn it, but the brain adapts quickly.

Finally! It was just what I needed to tune the 4 cylinder engine on my 84 V-8 Chevy 305. It was a double socket. The sockets use a standard 1/4 inch connector so they are for the tool but this has worked great for me. No auto parts store sells a carburetor adjustment screwdriver, and the flexible shaft makes it very easy to use. Lisle instruments are always of the highest quality.