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05-12-2023, 07:28 AM
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#1 |
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Registered User
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,326
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Insane oil leak
Asking for a friend who just got his engine fired up after being built 3 years ago. Older motor Fired up with synthetic oil. Did a break in. lost over 2 courts of oil in just a couple hundred miles.
He has compression sees oil on the threads of the plugs. I am thinking valve seals, how do you check this
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Chris _______________________________ 1979 Chevy Stepside SPORT 2018 Chevy Silverado, 39 years apart  My build 2008-2016. http://m.imgur.com/a/bURrE |
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05-12-2023, 08:17 AM
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#2 |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,566
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Re: Insane oil leak
What kind of engine?
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05-12-2023, 09:13 AM
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#3 | |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Insane oil leak
.
Quote:
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05-12-2023, 09:28 AM
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#4 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,716
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Re: Insane oil leak
2 quarts in a couple hundred miles . I would think it would be smoking pretty bad . Can’t see seals doing that much , my 68 327 uses oil and fouls the #1 plug regularly so I know the seals are bad but it doesn’t use that much and it hardly smokes at startup . Any plugs fouled?
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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05-12-2023, 09:31 AM
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#5 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,716
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Re: Insane oil leak
Did he break it in with synthetic oil? If so nothing broke in I would drain it put break in oil in it and redo the procedure.
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Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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05-12-2023, 12:40 PM
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#6 |
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Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,611
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Re: Insane oil leak
Pull a couple of the oily plugs. If the tips are also oil coated, could be the valve seals. But as mentioned, a normal sign of burning oil is blue exhaust smoke.
Another reason the outside of the spark plugs could be oily is leaking valve cover gaskets. But that much leakage should show up on the floor. OEM valve covers or aftermarket? Some aftermarket skip the baffles for the PCV connections. No baffles could cause excessive oil consumption. |
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05-12-2023, 01:58 PM
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#7 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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Re: Insane oil leak
on tv years ago guy had similar issue with a fresh rebuild on a corvette.. turns out the intake manifold was bad and it was sucking oil down the ports it was an episode of fantomworks
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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05-12-2023, 02:40 PM
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#8 |
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Registered User
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,326
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Re: Insane oil leak
thanks guys, going to try to do the break in again
__________________
Chris _______________________________ 1979 Chevy Stepside SPORT 2018 Chevy Silverado, 39 years apart My build 2008-2016. http://m.imgur.com/a/bURrE |
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05-12-2023, 09:24 PM
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#9 | |
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Just here to tinker
 
Join Date: Jun 2008
Location: Holland, MI
Posts: 3,697
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Re: Insane oil leak
Quote:
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