Saw a shop in Tulsa using a new kind of glow plug tester and I'm not sold on it

I was visiting a big fleet shop in Tulsa last week, and all their techs were using this new digital glow plug tester. It has a little screen that shows a number instead of just a light. The foreman said it gives a 'more precise reading', but I watched a guy spend five minutes trying to figure out why it read '3.2' on a plug that my old test light said was clearly dead. It seems like a fix for a problem we don't have, adding cost and confusion. Has anyone else used one of these and found a real benefit over the simple light method?

3 comments

3 Comments

angela_knight31mo ago

My old shop tried a similar digital unit for injector solenoids. It gave a voltage drop reading down to the hundredth, but the spec was just "under 1.0 ohms." We wasted so much time debating if a 0.98 reading was okay versus a 1.02. The fancy data didn't help us make a yes/no decision any faster. Sometimes a simple pass/fail light is all the information you actually need to get the job done.

riverw171mo ago

Sounds like the tool was smarter than the techs!

carter.julia1mo ago

Read an article about this exact problem in a trade magazine last month. They called it "data overload" where tools give too much detail and it just confuses the repair process. The writer said sometimes a simple go/no-go gauge is faster and less stressful for the tech, even if it feels less advanced.