[David Lang]

I'm looking to install a tiny-tach ( http://www.tinytach.com/tinytach/diesel.php ) on the truck I purchased earlier today, but I need to know what sice the injector lines are. I've done a few searches, but haven't spotted the answer.

 

[High Sierra 2500]

Welcome to the forum!

I don't know off the top of my head the answer to your question (although I think it's like 3/16"), but as I recall all you need is the outside diameter and you should be able to measure that fairly easily...

 

[5speed]

The injector lines on vans are smaller than the trucks from what I have read, just for your information.

 

[David Lang]

given that the different sizes are 6mm, 7mm, and 1/4" I don't trust my measureing skills to get the right one

I've got one of the military blazers if it makes any difference

 

[paddy1998]

Dear Injector Line Diameter Seekers Of The Past,

I have come from the future to tell you that the OD of the 6.2 injector lines is 0.25 in 1983.

So buy the 1/4 inch Tiny Tach.

Live Long And Prosper. 🤣