New guy with cdr/blow by question - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Lounge (1) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > 6.2L Diesel Engine
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 01-08-2013, 12:33 AM   #1 (permalink)
Jace
Diesel Fanatic
 
Jace's Avatar
 
Join Date: Jan 2013
Posts: 86
iTrader Score: 0 reviews

New guy with cdr/blow by question

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)?
Offline  
Reply With Quote
Sponsored Links
Advertisement
 
Old 01-08-2013, 02:30 AM   #2 (permalink)
Bigboytoys
Diesel Master
 
Bigboytoys's Avatar
 
Join Date: May 2007
Location: Manitoba, Canada
Posts: 1,912
iTrader Score: 0 reviews

Old School Oil Burners (Old SOBs) Member





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.
__________________
1990 Suburban 1500 Silverado 4x4, in the shop is a possible 6.5? Turbo in the wings. Open plenum intake. 700 R4 Now Rebuilt + 241, NV4500+205 sitting in the shop. 10,000lb Trany Cooler With 10in pusher Fan and gauge. 8,000 LB Warn Multi Mount. TCC Lock up Control. 10's front and back, 60 front and 14 bolt rear real soon? 4" Lift and 31 10.50's. Many twisted drive shafts F&R. Manual and auto high idle. Heated Fuel lines. Enough lighting to make day light

Old SOBs member #26

Quote:
Originally Posted by happypunch View Post
it would be nice if it could deflect a deer or a prius...
Quote:
Originally Posted by Livelli View Post
Mine ate about 6ft of paper towel once. It idled funny for a minute, then let out one big black firey fart and smoothed right out.
Offline   Reply With Quote
Old 01-08-2013, 07:40 AM   #3 (permalink)
Jace
Diesel Fanatic
 
Jace's Avatar
 
Join Date: Jan 2013
Posts: 86
iTrader Score: 0 reviews

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.
Offline   Reply With Quote
Old 01-08-2013, 08:14 AM   #4 (permalink)
smackzed
Mad (Sean) Max
 
smackzed's Avatar
 
Join Date: Jan 2009
Posts: 7,174
iTrader Score: 1 reviews

Old School Oil Burners (Old SOBs) Member

DieselPlace.com Premium Member Member

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
__________________
'87 GMC R2500 380,000km
AM/FM Radio -rebar except for engine trans and misc suspension parts

'90 GMC R3500 srw 3+3 280 000kms
CD player that eats CDs
No matter what Dieselplace may say, I am not a diesel technician, nor expert or specialist. Just a cheap guy with old truck that needs to run
Offline   Reply With Quote
Old 01-08-2013, 06:12 PM   #5 (permalink)
happypunch
Diesel Master
 
happypunch's Avatar
 
Join Date: May 2011
Location: Boise, ID
Posts: 2,101
iTrader Score: 0 reviews

Old School Oil Burners (Old SOBs) Member

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.
__________________
1987 V20 Suburban 6.2 diesel
GM-3 Turbo
Built 4l60
3.73's With 285/75/16's

Gave it another chance at life and enjoying every minute
Offline   Reply With Quote
Old 01-08-2013, 07:14 PM   #6 (permalink)
Jace
Diesel Fanatic
 
Jace's Avatar
 
Join Date: Jan 2013
Posts: 86
iTrader Score: 0 reviews

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?
Offline   Reply With Quote
Old 01-08-2013, 08:31 PM   #7 (permalink)
smackzed
Mad (Sean) Max
 
smackzed's Avatar
 
Join Date: Jan 2009
Posts: 7,174
iTrader Score: 1 reviews

Old School Oil Burners (Old SOBs) Member

DieselPlace.com Premium Member Member

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
__________________
'87 GMC R2500 380,000km
AM/FM Radio -rebar except for engine trans and misc suspension parts

'90 GMC R3500 srw 3+3 280 000kms
CD player that eats CDs
No matter what Dieselplace may say, I am not a diesel technician, nor expert or specialist. Just a cheap guy with old truck that needs to run
Offline   Reply With Quote
Old 01-09-2013, 01:06 AM   #8 (permalink)
Sparkys Tacoma
Diesel Specialist
 
Sparkys Tacoma's Avatar
 
Join Date: Apr 2011
Location: San Diego
Posts: 619
iTrader Score: 0 reviews

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.
__________________
93 chevy c3500 crew drw 6.5TD nv4500
91 Chevy K2500 6.2L Detroit.
4X4 4.10's stock everything but
Dual exhaust. Reg cab
Offline   Reply With Quote
Old 01-09-2013, 01:10 AM   #9 (permalink)
dieselolds
George Costanza fan...
 
dieselolds's Avatar
 
Join Date: Sep 2003
Location: Newfoundland/Alberta Canada
Posts: 2,132
iTrader Score: 0 reviews
Send a message via MSN to dieselolds

Quote:
Originally Posted by Sparkys Tacoma View Post
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.
__________________
1978 Chevrolet K20....with '81 5.7L DIESEL DX block/TH400

1993 Chevrolet K1500 Z71....with newly rebuilt '97 6.5 TD (506 squirter block)

1997 Chevrolet K1500 ext.cab Z71....6.5 TD engine is out....New Genuine GM 6.2 660 short block takes its place.Equipped with 4L80E/6.5TD cylinder heads and DS4 injection system.

1998 Chevrolet K1500 Z71.....with a '87 6.2L DIESEL and 700R4.

2002 Volkswagen Jetta TDI.....with a 1.9L turbo diesel/5 speed.Cold air intake system.

2013 Volkswagen Passat TDI comfortline....with 6 speed manual tranny and 2.0L turbo diesel.
Offline   Reply With Quote
Old 01-09-2013, 01:10 AM   #10 (permalink)
Bigboytoys
Diesel Master
 
Bigboytoys's Avatar
 
Join Date: May 2007
Location: Manitoba, Canada
Posts: 1,912
iTrader Score: 0 reviews

Old School Oil Burners (Old SOBs) Member

You've got the new style set up that for some reason is less complex, completely backwards to what GM usually does he he.
__________________
1990 Suburban 1500 Silverado 4x4, in the shop is a possible 6.5? Turbo in the wings. Open plenum intake. 700 R4 Now Rebuilt + 241, NV4500+205 sitting in the shop. 10,000lb Trany Cooler With 10in pusher Fan and gauge. 8,000 LB Warn Multi Mount. TCC Lock up Control. 10's front and back, 60 front and 14 bolt rear real soon? 4" Lift and 31 10.50's. Many twisted drive shafts F&R. Manual and auto high idle. Heated Fuel lines. Enough lighting to make day light

Old SOBs member #26

Quote:
Originally Posted by happypunch View Post
it would be nice if it could deflect a deer or a prius...
Quote:
Originally Posted by Livelli View Post
Mine ate about 6ft of paper towel once. It idled funny for a minute, then let out one big black firey fart and smoothed right out.
Offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Did my 6.2 just blow up???? 93SierraDiesel 6.2L Diesel Engine 12 04-21-2009 06:25 PM
What I blow?? captkirk Electrical 3 03-02-2009 11:20 PM
Blow By ClassicChris Duramax Second Generation: 2004.5-2005 (LLY) 7 02-07-2009 07:40 PM
Blow Out tabatasu Wheels & Tires 10 08-22-2007 01:45 AM
Blow By fleet 6.5L Diesel Engine 5 06-03-2005 02:42 AM


All times are GMT -4. The time now is 10:03 PM.


Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0