New guy with cdr/blow by question

[Jace]

I'm looking at buying a 1983 c10 truck with a 6.2 engine. I own several m1009 cucv blazers so I know a little but about the 6.2. However, when I went and looked at the truck for sale I noticed the cdr is different from the cucv. The truck I looked at was missing the cdr hose that attaches to the bottom of the cdr. I also noticed that while the truck was on and at idle, there was smoke pouring out of the bottom of the cdr where the hose would normally be. Is this something that I should be concerned about? Also, what hose is supposed to be there and where does it go to (I'm assuming it goes from the bottom of the cdr to the intake manifold)?

[Bigboytoys]

Does it look like this or is the CDR directly attached to the oil filler tube?

Blow by is in the eye of the describer. Was it a wisp that was steady but thin or was it full on steam train that made your eyes water at the tailgate?

The CDR has to be hooked up or your going to have seal leaks, and the less blow buy the better.

[Jace]

The cdr is attached to the oil filler tube. The blow by was a steady stream of smoke pouring out of the bottom of the cdr. I checked the oil and it was about a half of quart low, however the owner said the oil hadn't been changed in a while. Other than this issue, the truck fired right up and drove nice. The body is nice and straight, no rust and has brand new tires. It's. 1983 c10 short wheel base single cab. I can buy the truck for $1000, just want to make sure it's worth it.

[smackzed]

I'd buy it just for the rust free body and new tires. Sounds like some serious blowby but if it runs and gets decent mileage who cares. Just get some hose that can handle some oil and route it to the ports on the intake. If the splitter boot isn't on the bottom you'll need to get creative

[happypunch]

Maybe the cdr just needs to be cleaned. Dunk it in some diesel and dump out the crud, rinse and repeat until clean then let it air dry. Some people use gasoline, I would stick to diesel personally.

[Jace]

I went and looked at it again today. I pulled the air cleaner off and noticed that both ports on the intake where the cdr hoses should be are blocked off. I also noticed smoke coming out of the oil dipstick. I did notice that when you rev the engine up the smoke stops coming out of the dipstick and bottom of cdr hose. I'm guessing this is ok? If I buy it, I'm going to have to fab up some kind of "F" connector for the cdr and run the hoses to the intake, is this correct? I also noticed that the truck shifted real quick from 1st to 2nd, but was slow to shift to 3rd. I'm assuming that this is the same type setup as my CUCV, and may need new vacuum hoses?

[smackzed]

I'm guessing it's OK too, but it's just a guess. Blow by is never desireable but on a 20 year old engine it's almost inevitable. Like I said before, in my opinion, if it runs and gets decent mileage who cares. Motor goes boom and you still have a good body and tires. You could probably recoup 1/2 what you spend by selling the rubber and the other 1/2 by selling the steel.

F connector. Yes

The 3 speed auto will be the th400, same as in the cucv's. As to why the trans shifts the way it does????? Maybe vac related maybe not but vac is definetly a good place to start looking

[Sparkys Tacoma]

Sorry don't mean to thread jack but it is similar. On my CDR it goes from valve cover directly to intake. Is this normal? No extra hoses just right back into combustion. Thanks.

[dieselolds]

Originally Posted by Sparkys Tacoma

Sorry don't mean to thread jack but it is similar. On my CDR it goes from valve cover directly to intake. Is this normal? No extra hoses just right back into combustion. Thanks.

Thats also normal.Thats the way my 6.2 is set up.

[Bigboytoys]

You've got the new style set up that for some reason is less complex, completely backwards to what GM usually does he he.