Oil leak at base of oil fill tube... - S-10 Forum
 
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post #1 of 10 Old 10-27-2009, 01:12 AM Thread Starter
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Question Oil leak at base of oil fill tube...

Hopefully someone can make some sense of this. So I got an oil leak around the base of the oil fill tube on my 2000 2.2 automatic s10 with 55,000 miles. My stepdad said the pressure was too high and it was causing the seal to get pushed out around the tube thus causing oil to leak. The oil pressure read 40 when it leaked at idle. Yesterday I went and got an oil cap breather, the two prong kind, and put it on the tube, and set the dipstick cap aside. When I ran it the oil stopped leaking except for some intermittent drops I figure were just blowby. The pressure was 20 at idle but 40 plus when I revved it. Problem fixed? Is it ok to run a breather on that motor being that it is a closed system and needs to build pressure? Also i could not locate a pcv valve, is there supposed to be one?

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post #2 of 10 Old 10-27-2009, 01:29 AM
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Re: Oil leak at base of oil fill tube...

40 psi idle pressure is normal, also someone correct me if i'm wrong here but the oil pressure is read on the oil passages to the engine components and has litter to nothing to do with whether your fill tube is closed or open
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post #3 of 10 Old 10-27-2009, 01:49 AM
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Re: Oil leak at base of oil fill tube...

check the rubber o ring. they do tear.


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post #4 of 10 Old 10-27-2009, 04:47 PM
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Re: Oil leak at base of oil fill tube...

What year is the s10? And Dmax that sounds about right. Yes do check the o-ring. And make sure you have a stock OEM dipstick and filler tube w/ oring going into the top of the crankcase/oil pan, depending on your engine setup. Some people think they are mechanics and put aftermarket non OEM parts on and expect them to fit perfectly. Keep us posted, and good luck!

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post #5 of 10 Old 10-28-2009, 02:05 AM
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Re: Oil leak at base of oil fill tube...

Your idle oil pressure should be right around ~20PSI, fully warmed up...

2000 s10 5 speed - 2003 2.2 bored .050,Mahle pistons,Eagle H-beam rods,Garrett GT3071R turbo .63 TiAL SS 3" Vband hotside,ported compressor housing 4" inlet,2.5" outlet,TiAL MVS WG,TiAL Q BOV,BEGI FMU,Siemens 80# injectors,Treadstone TR8 Intercooler,Vibrant filter,Full 3" exhaust,Aero Turbine muffler,Spec Stage3+ clutch,Hurst shifter,ASP pullies,FlexALite efan,Aeromotive A750 Fuel Pump
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post #6 of 10 Old 10-28-2009, 02:11 AM
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Re: Oil leak at base of oil fill tube...

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Originally Posted by 702s10 View Post
Your idle oil pressure should be right around ~20PSI, fully warmed up...
fully warmed up with good oil my 2.2 that i've owned from 43k to now 88k miles has always idled at 35-40 psi warmed up with 0w30 to 10w30 oil that i've had it in it

it currently has full synthetic mobil 1 0w30 and never goes under 37~38 psi warmed up

i will agree though 20 psi at idle is not a problem but less than that would be a bit concerning imho and a sign that bearing are getting pretty worn in the engine
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post #7 of 10 Old 10-28-2009, 02:19 AM
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Re: Oil leak at base of oil fill tube...

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Originally Posted by dmax View Post
fully warmed up with good oil my 2.2 that i've owned from 43k to now 88k miles has always idled at 35-40 psi warmed up with 0w30 to 10w30 oil that i've had it in it

it currently has full synthetic mobil 1 0w30 and never goes under 37~38 psi warmed up

i will agree though 20 psi at idle is not a problem but less than that would be a bit concerning imho and a sign that bearing are getting pretty worn in the engine

Damn, I'm running castrol syntec 10w30 and mine has always been ~20PSI at idle for the 2 years I've owned it.

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post #8 of 10 Old 10-28-2009, 02:25 AM
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Re: Oil leak at base of oil fill tube...

really, how main miles you got on your motor? i even went 5k miles on some normal 10w30 once and it never went close to 30 psi, maybe its a difference in years and their oil pumps my trucks an 00'

my pressure has always gone

dead cold its 70 idle 80 psi when reve'd , yep it will peg the meter

warmed up it goes 38 idle 60 rev'd up a bit
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post #9 of 10 Old 10-28-2009, 02:51 AM
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Re: Oil leak at base of oil fill tube...

I got a new oil pump cause of the rebuild, and im running synthetic 5w-20 and mine is 20psi warm @ idle


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post #10 of 10 Old 10-28-2009, 07:55 PM
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Re: Oil leak at base of oil fill tube...

I have a 00' with 132,xxx...it has a 60 PSI cold idle...

2000 s10 5 speed - 2003 2.2 bored .050,Mahle pistons,Eagle H-beam rods,Garrett GT3071R turbo .63 TiAL SS 3" Vband hotside,ported compressor housing 4" inlet,2.5" outlet,TiAL MVS WG,TiAL Q BOV,BEGI FMU,Siemens 80# injectors,Treadstone TR8 Intercooler,Vibrant filter,Full 3" exhaust,Aero Turbine muffler,Spec Stage3+ clutch,Hurst shifter,ASP pullies,FlexALite efan,Aeromotive A750 Fuel Pump
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