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Old 10-10-2009, 11:52 AM
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Default Oil in Intake manifold

Well, I pulled my motor out to get the car completely painted. Decided to remove the manifold since I'm doing the rbc manifold. When I took off the manifold there were small puddles off oil in the manifold. The pcv valve isnt clogged. One thing I noticed is that the vacuum line from the pcv valve to the manifold was that it was completed sucked shut.

Before I pulled it the moto it had black sooth coming out the tail pipe. Pretty postive it wasnt oil because it didnt smear when I wiped it off the rear bumper. The exhaust side of the head has alot of carbon build up and the plugs are straight black. I thought the car was running rich but possibly bad rings? Are there any ways I could check to see if the rings are bad with the motor out of the vehicle?

You can see the picture below that it has alot of carbon build up.


Spark Plug

Last edited by Linh.; 10-14-2009 at 01:48 PM.
Old 10-10-2009, 12:12 PM
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Default Re: Oil in Intake manifold

hmmm...
heres what i suggest this usually works
sea foam your car put alot inyour gas tank put some in your vacuum lines and your intake and put some where your oil goes see if that fixes it and seafoam is available at most auto shops
Old 10-10-2009, 12:40 PM
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Default Re: Oil in Intake manifold

damn dat motor kleen
Old 10-10-2009, 12:45 PM
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Default Re: Oil in Intake manifold

might be the cleanest ive ever seen come out of a car .
Old 10-10-2009, 01:24 PM
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Default Re: Oil in Intake manifold

I thought seafoam destroys the motor?
Old 10-10-2009, 02:15 PM
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Default Re: Oil in Intake manifold

Originally Posted by Linh.
I thought seafoam destroys the motor?
If you use common sense, it doesen't. Though Id advise against running it in the crankcase.
Old 10-10-2009, 02:18 PM
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Default Re: Oil in Intake manifold

well for that vacuum line to be sucked closed there has to be a blockage and that blockage is probably causing blow by and smoke
Old 10-10-2009, 02:54 PM
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Default Re: Oil in Intake manifold

Why not run it in the crankcase?

Theres nothing in the hose.
Old 10-10-2009, 03:10 PM
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Default Re: Oil in Intake manifold

Originally Posted by Linh.
Why not run it in the crankcase?

Theres nothing in the hose.
It's basically kerosine. It will deteriorate rubber seals.

It would take multiple oil changes to get all of it out.
Old 10-10-2009, 05:04 PM
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Default Re: Oil in Intake manifold

sorry for the off topic, but did you clean that motor? I live here in the OC and trying for find a place to clean my motor. THanks
Old 10-10-2009, 05:37 PM
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Default Re: Oil in Intake manifold

Yeah I cleaned it but its painted. You can use some simple green.
Old 10-11-2009, 05:25 AM
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Default Re: Oil in Intake manifold

h22's are known for having an inadequate PCV system. either install a catch can or don't be surprised that you are pulling oil.
Old 10-11-2009, 05:47 AM
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Default Re: Oil in Intake manifold

Originally Posted by bluedlude
h22's are known for having an inadequate PCV system. either install a catch can or don't be surprised that you are pulling oil.
yup. delete your PCV system and install oil catch can.
Old 10-11-2009, 06:30 AM
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Default Re: Oil in Intake manifold

those hoses suck shut because they get oil soaked and soft. just put a new hose in it.
get a good close up pic of the plugs if you can. easy to tell the diff between oil and gas.
Old 10-11-2009, 10:39 AM
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Default Re: Oil in Intake manifold

Thanks for the advice. Ill take some pictures asap.
Old 10-14-2009, 01:50 PM
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Default Re: Oil in Intake manifold

Added the picture of the spark plug. All 4 look exactly the same. I also shined a flash light down each of the cylinders. Didnt see any oil just looked like carbon build up at the top of the pistons.
Old 10-14-2009, 05:25 PM
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Default Re: Oil in Intake manifold

that looks smooth flat black, which is fuel, running rich.
Old 10-14-2009, 05:58 PM
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Default Re: Oil in Intake manifold

def running rich
Old 10-14-2009, 07:21 PM
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Default Re: Oil in Intake manifold

A little sign of relief. Ill just do a compression test and leak down afterwards to make sure everything is ok.
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