After fixing a leaking power-valve, I now need to re-adjust my Ford truck’s idle mixture screws, located at the base of the carburetor. The screws are a straight slot on the head, not a Phillips. It’s a very frustrating job b/c of the slotted screw head and their location. The distributor and fuel…

I would highly recommend the tool shown by Nevada. I bought one of those way back in the day and it would get me to the screws on any carburetor made. Mine is a Snap-On so that might be prohibitively pricy today. Maybe a more inexpensive version can be had???

I also strongly recommend the tool shown by Nevada. The Allen wrench shown on the far right is for adjusting the points through the window in the distributor cap on GM products. I don’t use it often any more, but when I do, it’s priceless.

I thought that tool might be discontinued/obsolete but it is still available from Snap-On for only $106.40; [image] Set, Carburetor Adjustment Tool, 6 pc • Includes: S6137E, S6138E, S6139, TM64, TM83A, TM85 I probable paid just $80 for that tool 30 years ago w…

While I seem to recall adjusting Ford idle mixtures with my bare fingers Rochesters did require that dog leg tool or for the shade tree DIY slipping a piece of vinyl hose over the end of a screw driver would help keep the screw driver in the slot. Of course the tamper proofs were sometimes difficul…

The tool I used had the blade made out of bent wire crimped into an aluminum shaft, with a red plastic handle. Sound familiar to anyone?

Good ideas above. It sounds like this problem has already been solved and I just need to get with the plan and obtain the right tool for the job.

JayWB: I still have my GM dwell adjustment tool. It has a chuck and 5 Allen wrenches although all GMs seemed to use one size. It has a flexible shaft with screwdriver type handle. When used with a dwell meter it was really to easy. Idle air adjustment screws tended to have a generous slot. I just us…

Rod Knox: Ford Autolite and Holley carbs with the groves on the idle air adjustment screws could be adjusted with fingers. I had forgot about the stupid plastic tamper proof caps which allowed maybe a 1/4 turn of adjustment. with a little care they could be pried off without damage.

Best screwdriver for adjusting 70's Ford Carburetor idle mixture screws?

Maintenance/Repairs

jtsanders June 26, 2016, 8:59pm 14

Check Amazon for flexible shaft screwdrivers. You could use the Tygon tube over the flexible shaft.

Topic		Replies	Views
What's this other adjustment screw on my carburetor? Maintenance/Repairs toyota , pickup	12	5476	February 5, 2017
Carb question Maintenance/Repairs pontiac , bonneville	48	377	June 11, 2025
Clueless Maintenance/Repairs	5	767	September 1, 2007
Using a tachometer Maintenance/Repairs	3	378	July 2, 2008
72' mustang idling to fast Maintenance/Repairs mustang	6	1253	September 9, 2007

Best screwdriver for adjusting 70's Ford Carburetor idle mixture screws?

Related topics