oil puddle on intake - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GREASEMONKEY72 · 02-08-2007, 06:39 PM

i have a little puddle of oil on the right side of my intake and would like to know what you guys think is causing it or maybe causing it, stock 350 4bbl and stock intake and i dont know whats been done it to, according to the little pencil notes on the door jam it was rebuilt around 85,000 and i was contacted through myspace from i guess one of the previous owners atlest he said he was and he told me it has edlebrock intake and carb yet it has the stock stuff when i get it, ok enough rambleing, ill take pictures in a bit

67cruiser · 02-08-2007, 06:48 PM

Have you checked the valve cover gasket?

Imacarguytoo · 02-08-2007, 06:51 PM

Pull the intake and reseal it. Use felpro gaskets with a little bit of gasket sealer around the coolant ports. Not around the gas ports. Make sure everything is clean. Run a bead of silicone at the ends of the intake without the rubbers they supply. And you should be good to go.

smoknbarrels · 02-08-2007, 06:52 PM

I too have had the mysterious oil puddle on the intake, even only after a rebuild of less then 1000 miles. never knew where it came from. I assumed the valve covers leaked..those old steel valve covers never did ever seal good..

centsless · 02-08-2007, 07:06 PM

Remove the intake manifold bolts closest to the oil and put some teflon thread sealant on them. Re install the bolts and that should stop the leak.

GREASEMONKEY72 · 02-08-2007, 07:16 PM

heres a pic of it for fun

GREASEMONKEY72 · 02-08-2007, 07:18 PM

THANKS for the help guys ill try just pulling the bolts and try that first and if that doesnt work i guess ill plan a weekend and pull the intake and give a good cleaning while its off, thanks again

jeffspower · 02-08-2007, 07:27 PM

Quote:

Originally Posted by centsless

Remove the intake manifold bolts closest to the oil and put some teflon thread sealant on them. Re install the bolts and that should stop the leak.

Crankcase pressure when you are working it hard is pushing oil up the bolt threads. Several of the threaded holes in the head are not "blind" holes- they go all the way thru exposed to oil in the pushrod area.

jimmydean · 02-08-2007, 07:29 PM

I pulled one bolt a night and used permatex thread sealant on it, torque it down and left it set over night. I had 34 bolts that did that, after 4 nights, no more oil puddles.

I did one at a time so I didn't break the seal on the intake and it allowed the thread sealant to set for each bolt.

st1x10 · 02-08-2007, 07:46 PM

Good Info. I will have to do that on mine. I couldn't figure it out either, even though the intake will be coming off.

02-08-2007, 06:39 PM	#1
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	oil puddle on intake i have a little puddle of oil on the right side of my intake and would like to know what you guys think is causing it or maybe causing it, stock 350 4bbl and stock intake and i dont know whats been done it to, according to the little pencil notes on the door jam it was rebuilt around 85,000 and i was contacted through myspace from i guess one of the previous owners atlest he said he was and he told me it has edlebrock intake and carb yet it has the stock stuff when i get it, ok enough rambleing, ill take pictures in a bit __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

02-08-2007, 06:48 PM	#2
67cruiser Registered User Join Date: Dec 2006 Location: OKLAHOMA Posts: 140	Re: oil puddle on intake Have you checked the valve cover gasket? __________________ 67 C10 SWB 350-Turbo 400 tranny-Disc brake "Those who live by the sword get shot by those who don't"

02-08-2007, 06:51 PM	#3
Imacarguytoo Registered User Join Date: Nov 2006 Location: Illinois Posts: 306	Re: oil puddle on intake Pull the intake and reseal it. Use felpro gaskets with a little bit of gasket sealer around the coolant ports. Not around the gas ports. Make sure everything is clean. Run a bead of silicone at the ends of the intake without the rubbers they supply. And you should be good to go. __________________ '67 C20 Lwb 350 4-Speed '01 Chrysler Concorde LXI (wifes ride) '91 Gmc Suburban 3/4 2wd 454 Tbi '51 Jeep Cj3a "Willys" 350 V8

02-08-2007, 06:52 PM	#4
smoknbarrels Registered Mail Join Date: Jun 2006 Location: Alberta, Canada Posts: 513	Re: oil puddle on intake I too have had the mysterious oil puddle on the intake, even only after a rebuild of less then 1000 miles. never knew where it came from. I assumed the valve covers leaked..those old steel valve covers never did ever seal good.. __________________ '67 chev 496, lwb to swb, bagged - pro street project

02-08-2007, 07:06 PM	#5
centsless sufficiently talented fool Join Date: Jun 2006 Location: Forest Hill, MD Posts: 2,231	Re: oil puddle on intake Remove the intake manifold bolts closest to the oil and put some teflon thread sealant on them. Re install the bolts and that should stop the leak. __________________ "it's impossible to be surrounded by idiots when you are part of the circle" 2003 Suburban 2002 Pontiac Montana 1981 Corvette 1966 Impala Convertible Click here to support the board

02-08-2007, 07:16 PM	#6
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: oil puddle on intake heres a pic of it for fun Attached Images __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

02-08-2007, 07:18 PM	#7
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: oil puddle on intake THANKS for the help guys ill try just pulling the bolts and try that first and if that doesnt work i guess ill plan a weekend and pull the intake and give a good cleaning while its off, thanks again __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

02-08-2007, 07:29 PM	#9
jimmydean Registered User Join Date: May 2005 Location: Beaverton, OR Posts: 3,728	Re: oil puddle on intake I pulled one bolt a night and used permatex thread sealant on it, torque it down and left it set over night. I had 34 bolts that did that, after 4 nights, no more oil puddles. I did one at a time so I didn't break the seal on the intake and it allowed the thread sealant to set for each bolt. __________________ New Project: 1966 LWB C20 Plans: 1/2 ton conversion Dropmember front Dropmember rear Corvette discs Restored raised bed http://67-72chevytrucks.com/vboard/s....php?p=4295210

02-08-2007, 07:46 PM	#10
st1x10 Registered User Join Date: Feb 2006 Location: Oklahoma City Posts: 588	Re: oil puddle on intake Good Info. I will have to do that on mine. I couldn't figure it out either, even though the intake will be coming off. __________________ 1970 Chevy C10 "Under Construction" 2002 Chevy S10 V6

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