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Newly built LS/vtec burning oil... valve seals i think.. help if ya can.

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Old Jun 4, 2006 | 04:09 PM
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Default Newly built LS/vtec burning oil... valve seals i think.. help if ya can.

well mostly it burns after i drove the car, let it sit for a while, and then start it back up, and some times when i beat on it and then drive around easy on it, it will smoke. im guessing it just builds up in there

also, when i pulled my intake off, there was oil sitting in the bottom of the intake manifold to.. so.. hopefully thats it
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Old Jun 5, 2006 | 12:41 AM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (Acura_I-RS)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Acura_I-RS &raquo;</TD></TR><TR><TD CLASS="quote">well mostly it burns after i drove the car, let it sit for a while, and then start it back up, and some times when i beat on it and then drive around easy on it, it will smoke. im guessing it just builds up in there

also, when i pulled my intake off, there was oil sitting in the bottom of the intake manifold to.. so.. hopefully thats it</TD></TR></TABLE>

The oil in your intake may be from poor crankcase ventilation.

When you "Beat" on it, the excess pressure in your crankcase forces oil into the ventilation tube that runs into your intake manifold.

Normally, the gasses that build in your crankcase are recycled into your intake system to be burned with fuel. In older cars, the crankcase was ventilated to the open air, but since we now live in a cleaner, friendlier, environmentally aware society the crankcase gases have to be burned in our evil internal combustion engines.

You could rig up a catch can and hook your vent tube directly into it to determine if that is in fact your problem, then you have a starting point to work with. Get a small coffee can, drill a hole in it the size of your vent tube, and stuff the tube into the can. Mount the can with some zip ties and go beat on it. When you are done, take a look in the can. You should not have oil in there. If you do, you are building excess pressure in your crankcase.
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Old Jun 5, 2006 | 04:18 AM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (Cuda70)

referring to the vent tube coming off the valve cover?
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Old Jun 5, 2006 | 09:03 AM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (Acura_I-RS)

would it be a good idea to try replacing the pcv valve? would that possible be it?

id like to try anything before i tear the head off and replace valve seals..

just seems like it smokes a hell of a lot and there is quite a bit of oil in the IM for it to just be the pcv..
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Old Jun 5, 2006 | 09:29 AM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (Acura_I-RS)

and to test for blow by, etc. should i run something to catch the oil off of the canister down under the battery there, or that black box under the intake manifold?

im just going to put a bottle there, sealed with a hose in it, to see if oil is blowing out, and if so, how much..
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Old Jun 5, 2006 | 02:13 PM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (Acura_I-RS)

anyone have any ideas?
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Old Jun 5, 2006 | 06:02 PM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (Acura_I-RS)

replace you pcv valve with a new oem piece from the dealer, its either shot, or your getting excessive blowby from poorly seated, or improperly installed rings
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Old Jun 5, 2006 | 06:35 PM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (PURPLETERROR aka BIGMA

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PURPLETERROR aka BIGMATT &raquo;</TD></TR><TR><TD CLASS="quote">replace you pcv valve with a new oem piece from the dealer, its either shot, or your getting excessive blowby from poorly seated, or improperly installed rings</TD></TR></TABLE>

i agree. try a leakdown maybe.
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Old Jun 5, 2006 | 07:14 PM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (PURPLETERROR aka BIGMA

so the chances of it being the valve seals is pretty slim?
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Old Jun 5, 2006 | 07:29 PM
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Default Re: Newly built LS/vtec burning oil... valve seals i think.. help if ya can. (PURPLETERROR aka BIGMA

its poss. the pcv would be my first step though
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