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#1085805 02/15/2015 9:00 PM
Joined: Jun 2014
Posts: 14
S
New Guy
New Guy
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Posts: 14
I bought a 66 C60 w/292 and got about 20 miles down the road and seen smoke, pulled over to find a lot of oil blowing out of the carb area. Anyone seen this before? Truck has been used very little last 8 years.

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H
Shop Shark
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Joined: Aug 2013
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Is there a breather tube to the carb? Perhaps it came from there. Other than that it's a stuck intake valve? Sounds serious. I would clean it, refill oil and run it with the valve cover off like your setting the rockers. I bet you see a rocker not moving.


I can explain it to you, I can't understand it for you.
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New Guy
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2 hoses to breather, 1 is pcv valve hose and other comes from other end of cover?

Joined: Feb 2000
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J
'Bolter
'Bolter
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Joined: Feb 2000
Posts: 5,217
A broken or stuck ring will cause lots of blow by, stuck valve will create a miss. You need to find out where the oil is, did it leak from valve cover onto the intake, or did it come from the vent pipe into the air filter housing.
Was the engine over full of oil?
Is it over full now ? or smell of fuel?
Does the engine miss or stumble?

Joe

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engine starts super easy and runs well/ no misses, oil came from from vent pipe into air filter housing, thanks for any and all help guys.

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H
Kettle Custodian (pot stirrer)
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Do a cylinder leakdown test. You're probably going to find excessive blowby on at least one cylinder.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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compression test showed between 100-112 on 5 cylinders and 61 on back cylinder?

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Kettle Custodian (pot stirrer)
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Now do a cylinder leakdown test and find out where the leak is.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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T
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61 on the back cylinder? Sounds like you have a bad set of rings on that cylinder.



1964 C20 LWB 292 6 cyl/sm420 parts truck.
1966 C10 SWB 292 hotrod 6/TKO600 tremec 5 speed.
1964 GMC 1500 LWB 305E V6/ SM420 "Crustine"
1977 C20 LWB 496/turbo400(soon to be 572)
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Originally Posted by TJ's Chevy
61 on the back cylinder? Sounds like you have a bad set of rings on that cylinder.

Yes, the rings were destroyed on that cylinder, after finding a few more issues I decided to let my mechanic put in a reman. engine, runs great but I am but deep $$$$ into this truck.


Moderated by  Phak1, Woogeroo 

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