felix_lane99•29d agoProlific Poster

I found a bypass trick for a stuck HEUI injector that actually worked... or did it?

I was working on a 7.3L Powerstroke that wouldn't start, fuel return was normal, and ICP was reading low. I tried the old unplug the ICP sensor trick and no change. Then I read about swapping the IPR valve with a known good one from a running truck, which I did from a buddy's 2002 model, and it fired right up. But now I'm wondering if that was just coincidence or if swapping parts like that is a legit diagnostic shortcut. What's your take on this kind of swap test, does it prove the part was bad or just hide the real problem?

3 comments

3 Comments

christopher_wells429d ago

Hang on, you swapped parts with a buddy's RUNNING truck while it was running? Tell me you didn't rip the IPR off a hot engine without turning it off first

ryan_gibson8429d ago

Yeah that buddy's gonna be pissed when his truck won't start now...

kaiharris14d ago

Did you ever help a buddy swap a alternator on a '90s Ford and forget to disconnect the battery? I shorted mine out with a wrench and it sparked right through the dash, fried the radio and the dome light. That truck sat for a week before we figured out we blew a fuse in the box under the hood.