Stopped by a truck stop in eastern Wyoming and watched a guy rebuild an injector pump with a butter knife

I was grabbing coffee at a Love's outside of Cheyenne last Tuesday when I noticed a driver working on his old Freightliner in the parking lot. He had the injector pump spread out on a newspaper on the ground, using a butter knife to pry off the delivery valve holder. I walked over to ask if he needed a hand and he just laughed, said he'd been doing it this way since 1998. Turns out he was a retired fleet mechanic who still refused to buy the proper tool for the job. He had the whole thing back together in under 20 minutes and the engine fired right up. Has anyone else seen a roadside repair that made you cringe but also kind of admire the resourcefulness?

3 comments

3 Comments

nina_hall482d ago

...and he did it with a BUTTER KNIFE? I'm sorry, that's insane. Like, I get being resourceful on the road, but messing with an injector pump of all things? That's not just a random bolt, those delivery valve holders are torqued down to spec. One slip and you're looking at a cracked housing or a stripped thread (which is basically a new pump at that point). But then again, he got it running in 20 minutes with a tool that's meant for spreading jam, so maybe I'm just overthinking it. Still, that level of confidence is either pure genius or a slow motion disaster waiting to happen. I'd be holding my breath the whole time he was cranking it over.

jake7472d agoTop Commenter

That butter knife probably wasn't even the sketchiest part, I bet he tightened it back down by feel alone with no torque wrench in sight. 20 minutes flat though, that's the kind of luck you only get when you're miles from a parts store and have zero other options.

young.ryan2d ago

You ever notice how those old fleet guys have a sixth sense for knowing exactly what you can get away with? I've done the butter knife trick myself on a 12-valve Cummins when I was stuck outside Rawlins with a stuck delivery valve. The key is to tap it gently with a hammer handle while you pry, not just yank on it like a gorilla. And yeah, he probably torqued it by feel which is scary but those old mechanical pumps are a lot more forgiving than the electronic ones we deal with now.