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Again, i encourage you to reread this thread as to when I was ever “combative, confrontational, accusatory, or just plain nasty.” After repeated slights on my choice Chinese glow plugs.. THAT ARE FINE I referred to someone sarcastically as “Captain America” for again suggesting “quality” glow...

I’d add that if you think the answer you’re about to give, however remote, is just flat out wrong then please don’t get your panties in a wad if someone points it out. I’ll invite you to re-read the thread. It wasn’t that I “didn’t like” an answer. It’s that the answer was just flat out not a...

SEVERAL responses instructed to replace the glow plugs with QUALITY glow plugs. That does not resolve my issue. This issue began with the truck roasting a "quality" glow plug. I also was told the start box was suspect. That diagnosis simply did not match the symptoms. I've barely been working on...

Follow the data and not the trend. Not sure any textbook or TM suggests swapping out a start box because one glow plug bakes repeatedly. Multiple failures of the glow plug in the same cylinder was never going to be resolved with a start box or a “higher quality” glow plug. I came here looking...

I think maybe i’ll replace the startbox and upgrade to quality U.S. made glow plugs and be ok. :D

If i could get my scope positioned to peek through that pre cup window I should be able to get a look at the piston, shouldn't i? I might try that tomorrow afternoon. If that piston is jacked I think that'll be game over for this engine.

This is kind of how I felt about it. I get that things expand as the engine heats up and that the engine is designed to operate with everything expanded so there *should* be lower compression when cold, but I guess what I was testing for was how deep in the hole was I? A cold test would give me...

That's actually one I had printed and bound. Got back into it today with the inspection scope and found this .. what looks like a crack in the pre combustion chamber. How am I?

Compression in other cylinders shouldn't effect the compression in the cylinder being tested but it has been suggested that the additional drag on the starter motor would effect the speed in which the engine cranks over, and that could effect the amount of compression. Presumably you want the...

I'll see if I can get a picture of it today. I'm going to repeat my compression testing and I'll get the scope out and give 'em another peek. I think I may be able to connect my scope to my laptop and grab images and I'll share those here in case something jumps out as off that I'm not seeing...

Well.. be careful suggesting Wellmans aren't the greatest glow plugs on Earth around here. I can hear the sharpening of pitchforks as I type this. :D I'm going to retry my compression tests again this afternoon with ALL the glow plugs removed. My tests yesterday were through the injector hole...

Yeah. Switching the glow plug connector did not move the problem. The start box provides the same voltage to all the glow plugs.. all those are wired in parallel. What one plug gets, they all get unless the wire is broken, in which case that particular plug gets 0 volts. I also metered the glow...

You mean move the injector on the cylinder in question to see if the problem follows? I essentially did that twice. Once with the cheap injectors and again with the Delphi injectors. The injector clearly isn’t the problem. Neither is the start box or the glow plugs since it’ll swell the glow...

I had my scope in the injector hole each injector/glow plug replacement looking around for hunks of glow plug.. terrified they’d fall down into the cylinder. Nothing jumped out at me but i’d planned on giving them a good look again tomorrow.

This is good information to know.. Thank you. I'll do that with my next test.

One of my many hobbies is building all tube guitar amps based off of early Fender designs. If you know of a U.S. manufacturer still producing resistors, particularly carbon comp, I'd be interested in checking them out. I'm not aware of any made in the U.S. anymore beyond ever dwindling NOS...

I considered that, which is why I replaced the injectors to begin with. Then replaced them a third time with Delphi injectors because I thought my cheapo injectors were perhaps sketchy. I also swapped the Delphi injectors and the issue didn't follow the injector which eliminates the injector...

I’m going to try them again tomorrow with all the glow plugs out so the only chamber with compression is the one i’m testing. Also wondering if I shouldn’t have some pipe tape on the adapter that i have threaded i to the old injector base. Someone earlier in this thread said according to the TM...

My point is i’m replying to this post on a device made in China. You’re reading it on a device made in China. We don’t produce resistors or capacitors in the United States so most of the components in the start box are made in China. The vast majority of things we use every day are made in China...

My “universal” diesel compression gauge wasn’t so universal, but fortunately i was able to disassemble one of my old injectors and found an adapter in the kit that would thread into that so that worked out. Who knows how accurate this gauge is, so i checked multiple cylinders. Method was to...