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Never tried it but figured it would work in a pinch.

BTW, I dig your desert camo paint scheme. Looks good! Doghead: assuming the front battery is dead but not malfunctioning with a shorted/dead cell issue, what if you had a single 12v jump pack on the front battery while jumping to a 24v source such as another MV or commercial truck? I would...

Playing devils advocate...how often do you get or need a NATO slave cable jump? Unless you own more than 1 MV (or had nearby friends) and actually posses the expensive cable, the setup is useless. Don't configure the truck around a scenario that for probably 90% of us will never happen. Do...

I concur :) I remember my GP system doing funky things before I swapped to a set of good plugs. If it starts cold and works...run it.

If cooling system looks good you are down to incorrect timing (bad IP or gears), misfire (white smoke on one side only more than likely), or an injector is failing. Attack things one one at a time and start with the cheapest/easiest items first. You will end with either a IP or engine :)

I think with the age and condition of most of these trucks, bad or leaky IP's should be addressed with a quality reman unit right from the start. This along with fuel filter/lines and GP system repairs will ensure that the truck fires every time. It's a lot of money up front but you will be...

I paid about $500 for an off the shelf DB2 which the factory tech tweaked to the correct specs for a 6.2 J code engine. They simply took mine as a core. This was all factory certified warranty stuff. I thought your quote was parts and labor, that would make sense. $900 for a reman'd DB2 is...

Sounds like an issue because I'm assuming you would be tying your 3rd batt in parallel with batt #1 on the cucv. In this scenario you would be able to charge batt #3 no problem then isolate it to run accessories. Issue will come up if you have dead starting batts, batt #3 will not provide you...

Looks sweet and I'm sure there are applications where you need that coverage. Just be sure your sacrifice in vision is worth it. Seems like drivers are getting worse and worse every year, any hindrance to see numb pedestrians or tailgaters only hurts you.

I would think that if the radiator didn't bleed down with 25 psi, it won't with anything higher. I could be wrong but I would think it should be ok. Maybe install a remote oil cooler temporarily to bypass the one built in the radiator. I would pull the oil pan and pressure test the cooling...

I dig it! Specs on the motor and did you run an ammeter on it to see what the draw is?

Wow, this is a big ol' thread of what not to do. New owners should take note of this. One, if a tech doesn't know how the CUCV charging system works and doesn't want to learn...pass. Two, never jump across postive and negative with a straight wire. Basic electricity applies...you just created a...

Why did you tear the engine down at 200k if it was in such great shape?

What would really help is at the end of these types of posts a link to the thread that was helpful. This way future users when they search for 'relay' and get this, they have a resolution at the end. Not this post necessarily but for example when I was looking for a thread on installing a hitch...

The huge key to success is threading that line on first before bolting the pump to the block. Once it is rigid, you are almost guaranteed to never the get the threaded line started.

My M1031 came stock with a welder and generator to power it :) I don't know if I would want a welder being powered in the engine bay, seems like a complete total loss of a truck if it melts down. Would be pretty cool to convert one Alt to 24v for the truck and the other for a welder though.

Because it works just fine BTW, electric pumps that are frame rail mounted are not desirable because they run hot and tend too fail early in life. Pretty much every OEM design utilizes a tank mounted pump. The fuel keeps it cool. Does your electric pump have an inertia switch to shut it off in...

How many miles are you driving and is it really worth to run on non-diesel fuel? It's one thing to kill a 6.2 diesel IP, I wouldn't be chancing it with more expensive Duramax parts. Just seems like with all the work and extra steps to get fuel, you are taking big chances for little gain. I...

That is why I have a primer on my Stanadyne FM100 filter. Almost all Euro diesels have primers from the factory (older stuff). This eliminates having to kill your batts. I never said you shouldn't switch but is an unnecessary upgrade and usually a band aid like my original statement. Not sure...

Need history of truck/fuel system. Could be an IP failing or improperly calibrated, bad injector, etc. My new IP in a stock tune will not blow any black smoke unless it is in cold/advance mode and I mat the skinny, then I get a tiny bit of particulate. I would safely assume you should only get...