New For Me 1985 Silverado 20 6.2 Diesel

[Craig Nedrow]

More work done today, and more to do. Finished cleaning the paint, look pretty, I like it. Gas gage, horn does not work, but will look into that tomorrow. Need to continue cleaning, first the interior, then the engine, and lastly the underside/frame. She is running great, filled her up with diesel, must have a 20 gallon tank. Ok Diesel people on here. On the engine, the manifold has tubes that are on both sides, and then go to the breather/oil fill. I need a schematic of those hoses, as what I have does not fit. I will look in the archives as well, but so far no dice. Sooo anyway, this feels good to get another square salvaged and on the road. Wife loves the truck, and the dogs went for a ride today, and gave me a thumbs up. The radio works, it's original, speakers are not what you would call fidelity. Hope to order all the stuff for the tank switching, and get the gas gage working, (it is open pegged full.) Now that this truck is running, doesn't look like I will be swapping in the LQ4, this was going to be my Bonneville truck. Got my eye on a couple others, could always make the 54 3400 my fast truck, it has D60, and a Modern front suspension with rack and pinion steering. Set up for a chevy motor, so easy swap. Was going to put the 235 back in, split the exhaust with dual pipes and Smitties, those sound so cool.......

 

[Craig Nedrow]

YAY!! I am so happy to read this!

You and me both brother. have a 1972 Honda 250 motosport with 1600ish original miles. Need to fix the kick starter, it runs like a top, would look real cool in the back, just like back in school.

 

[squaredeal91]

I'm glad you stuck with it man, i bet it perrs now. I had a 6.2 that sat after injection pump swap for 2 years and I had a bad time getting it to start. I was pretty discouraged and wanted to give up. Only thing that kept me going was the fact that I knew it ran fine before it sat.

 

[Ricko1966]

The 6.2s get unbelievably mpg. You will like it.

 

[idahovette]

Truck looks great @Craig Nedrow ya done good!!!!

 

[Craig Nedrow]

thanks Perry, more to do, but pooh, fence building time, will be finishing up with the no work horn and fuel gages and switching mechanism.

 

[idahovette]

The farm/ranch work must be a want to do thing for you? Never did get into that side of work, had an opportunity, but...........grease, oil and busted knuckles held the lure for me. trying to make things go FAST!!!!......The only thing that held me back a little, was lots of $$$$$$$$$$......lol.. unfortunatly at this stage of life, it seems BRAKES are more important??

 

[squaredeal91]

The farm/ranch work must be a want to do thing for you? Never did get into that side of work, had an opportunity, but...........grease, oil and busted knuckles held the lure for me. trying to make things go FAST!!!!......The only thing that held me back a little, was lots of $$$$$$$$$$......lol.. unfortunatly at this stage of life, it seems BRAKES are more important??

Shoot..they just slow you down pops

 

[idahovette]

They keep me from rear ending those effin' slow pokes in the fast lane..........and DON"T call me "Pops".....EVER!!!!!!

 

[84c10Tony]

Howdy, nice looking truck, cool on the repairs, fun stuff for sure, wonder what the mpg's end up being?

 

[squaredeal91]

They keep me from rear ending those effin' slow pokes in the fast lane..........and DON"T call me "Pops".....EVER!!!!!!

My apologies

 

[Bextreme04]

I take it all back, she's not the Hoe, POS I thought she was. Had it hit the other day, got up close to 50 degrees, had the batteries charged, and heater plugged in and it hit. Last Saturday, She started, and I actually drove it, 1/4 mile and quit. Wife pulled me home, but was encouraged. The gas gage does not work, and Not sure if the tank switches, so Put on the lift, and was able to pull the drivers side fuel line off. Only got about one qt of three year old diesel, so out of gas. Bypassed the selector valve, with a new piece of 3/8 gas line, good and tight, put in 6 gallons of farm diesel, 8 oz sea foam, and lots of cranking but no start. However later that day, after trying on and off all day, it started, and ran. I carefully took a easy run, and seems good. 40+ lbs of oil pressure, steers excellent, nice brakes. Started to put the shine on her, and hope to finish today, just the first pass, but a dramatic change. Red oxidizes so bad, but is cleaning up good. Jan gave ma a new air freshener, (her rigs all smell good, and she is very fussy about clean interior, and exterior) so should smell good inside. I will blow the inside out with compressed air, and clean up the inside after the wax job. Blue OX, I like it, I take it all back. I went on a three mile drive, had it up to 85, still pulling. Sound good around 55-60. Sets are very comfy. Will see if it starts this morning. Gotta say that I am so grateful to have a square to drive again, withdraws are the pits.

The problem was that you ran out of fuel. It takes a lot of cranking to get all the air out of the lines when you do that(if it ever will). You usually have to crack the fuel lines at the injector pump or the injectors themselves until you start getting diesel to pump out while cranking. Then you stop cranking, tighten up the lines, and start cranking again until it starts. Used to be a huge PITA on the HMMWV's when we would do an injector pump swap and then try to bleed it all out.

Even worse was when the operators on the mine resistant vehicles would accidentally pour 5 gallons of coolant into the fuel tank and then it would die once it cranked coolant all through the fuel system. Then you would have to flush the whole system out, replace the fuel/water separator and filters, and then do the whole air bleeding procedure again.

Did I mention I'm not a fan of diesels?

 

[Ricko1966]

The problem was that you ran out of fuel. It takes a lot of cranking to get all the air out of the lines when you do that(if it ever will). You usually have to crack the fuel lines at the injector pump or the injectors themselves until you start getting diesel to pump out while cranking. Then you stop cranking, tighten up the lines, and start cranking again until it starts. Used to be a huge PITA on the HMMWV's when we would do an injector pump swap and then try to bleed it all out.

Even worse was when the operators on the mine resistant vehicles would accidentally pour 5 gallons of coolant into the fuel tank and then it would die once it cranked coolant all through the fuel system. Then you would have to flush the whole system out, replace the fuel/water separator and filters, and then do the whole air bleeding procedure again.

Did I mention I'm not a fan of diesels?

When I'm starting a dead diesel I'll crack a couple of injector lines get a spray bottle full of diesel and fog the intake with diesel and crank when they start I let them run a few seconds,then tighten the injector lines with them running. I've never had a problem doing it that way,but if my way has unforseen consequences,I'd like to know. I have worked on very few diesels,mostly just my 2.

 

[Blue Ox]

When I'm starting a dead diesel I'll crack a couple of injector lines get a spray bottle full of diesel and fog the intake with diesel and crank when they start I let them run a few seconds,then tighten the injector lines with them running. I've never had a problem doing it that way,but if my way has unforseen consequences,I'd like to know. I have worked on very few diesels,mostly just my 2.

The only risk I can think of there is on an engine with glowplugs they may ignite the sprayed-in fuel prematurely and smack the piston on they way up. That's why 6.2Ls all have a sticker that says Do Not Use Starting Fluid.

 

[ByrdDog]

If you're referring to the ~1" lines coming out of either side of the center of the intake, that's the CDR (can't remember what it stands for). It's a crank case vent system to pull a slight vacuum on the crank case. You don't want to run without it, or you risk blowing out seals. On my 6.0 Powerstroke, I have the CCV just vented to atmosphere, but apparently it's a bigger issue on 6.2's.