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Oil is pooling on the intake
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Topic: Oil is pooling on the intake (Read 10811 times)
TxFiddler
Registered Users
Posts: 184
Oil is pooling on the intake
«
on:
May 19, 2010, 03:11:13 pm »
In my 80 C10 with 350, what would cause oil to "pool" on the intake? It's pooling right where on of the bolts from the a/c bracket bolts to it and also right where one of the intake manifold bolts are. Here's a pic. Thanks.
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80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator
topp
Frequent Member
Posts: 498
Re: Oil is pooling on the intake
«
Reply #1 on:
May 19, 2010, 03:37:37 pm »
Manifold gasket leak at that bolt.....
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'90 Suburban TBI 350
Layne
Senior Member
Posts: 1023
Re: Oil is pooling on the intake
«
Reply #2 on:
May 19, 2010, 03:37:46 pm »
Rocker cover gasket possibly
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77 c-10 - 77 400 86 700r4 "Emmy"
83 citation - 2.5L Four on the Floor!
88 sierra - reman 350 700r4 "Eleanor"
All normal practicality and rational money handling goes out of the window when it comes to my truck.
TxFiddler
Registered Users
Posts: 184
Re: Oil is pooling on the intake
«
Reply #3 on:
May 19, 2010, 03:39:59 pm »
Can a quick fix be to pull the bolt and put some right stuff around it to temporarily seal or do i need to just pull the intake and re-seal the whole thing?
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80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator
Irish_Alley
Tim
Senior Member
Posts: 13333
Family is not an important thing. It's everything.
Re: Oil is pooling on the intake
«
Reply #4 on:
May 19, 2010, 03:40:49 pm »
Quote from: Layne on May 19, 2010, 03:37:46 pm
Rocker cover gasket possibly
I would do that first more likely
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
eventhorizon66
Senior Member
Posts: 1909
Re: Oil is pooling on the intake
«
Reply #5 on:
May 19, 2010, 06:09:21 pm »
Those center four bolts (two on each side of carb) must have some sort of thread sealer on them. Otherwise, you will get puddles. Also check the VC gaskets as others have suggested (if they are old go ahead and replace them - it's easy). I wouldn't mess with a intake gasket replacement unless you have evidence that it's bad.
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'85 C10 SWB 350
700R4
TKO600
VileZambonie
Global Moderator
Senior Member
Posts: 19174
Re: Oil is pooling on the intake
«
Reply #6 on:
May 19, 2010, 06:31:52 pm »
Put some of this on the bolt threads. The bolt holes pass into the intake valley
http://www.permatex.com/products/Automotive/thread_compounds/a_thread_sealants/auto_Permatex_High_Temperature_Thread_Sealant.htm
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, ___
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74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
beastie_3
Senior Member
Posts: 3170
Josh
Re: Oil is pooling on the intake
«
Reply #7 on:
May 19, 2010, 08:39:48 pm »
Could just drill a hole in the manifold to let the oil drain back in.......Just kidding.
You can wipe it all clean, drive it for awhile and then trace where the oil is coming from. How long did it take for it to puddle up that much?
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79 K10
Semper Fi
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TxFiddler
Registered Users
Posts: 184
Re: Oil is pooling on the intake
«
Reply #8 on:
May 19, 2010, 10:30:16 pm »
Thanks a bunch everyone. I did clean it off, put some right stuff on where the a/c bracket meets the manifold, then put some high temp thread locker on the 2 bolts that hold the a/c bracket on. Haven't driven since. Will post results tomorrow. Thanks again, everyone.
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80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator
eventhorizon66
Senior Member
Posts: 1909
Re: Oil is pooling on the intake
«
Reply #9 on:
May 19, 2010, 11:26:05 pm »
It's not the ac bracket bolts that need the sealant. It's the nearby manifold bolts.
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'85 C10 SWB 350
700R4
TKO600
Irish_Alley
Tim
Senior Member
Posts: 13333
Family is not an important thing. It's everything.
Re: Oil is pooling on the intake
«
Reply #10 on:
May 20, 2010, 06:17:54 am »
As many times as i v taken my intake off I never had it leak there just at the ends were your supposed to put that rubber gasket at.
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley
When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
bobcooter
Junior Member
Posts: 788
1979 Scottsdale C-20
Re: Oil is pooling on the intake
«
Reply #11 on:
May 20, 2010, 09:09:42 pm »
I had one leaking like that, this is probably wrong, but I pulled it out, wrapped it with teflon tape and retightened it. No more leak.
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'79 C-20, 350/400, 3:73 gears, 9 leafs and a headache rack
Favorite Quote, "Good judgement comes from experience. Experience comes from poor judgement."
TxFiddler
Registered Users
Posts: 184
Re: Oil is pooling on the intake
«
Reply #12 on:
May 21, 2010, 09:47:40 am »
Well, after 2 days, no more pooling. It must have been one of the bolts holding the a/c bracket. I didn't mess with any of the intake bolts (hard to get to with carb on). The tread locker and right stuff on the 2 bracket bolts seemed to have fixed the problem. Thanks again for all the suggestions. I will need help again, I'm sure. Have a great weekend everybody.
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80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator
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Oil is pooling on the intake