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Old 08-29-2015, 08:12 PM   #1
supraheelfan
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Default Crankcase blow by issues

I have a serious blow by problem in my crankcase ventilation system. It has already caused me a turbo and an AFM. I have one accordion hose blocked off, could that be a part of the problem? Now i have a serious oil leak also. I do have an OIL CATCH CAN on and no help. i have stock turbo, aftermarket intercooler, cheap manual boost controller pushing 10psi, and an A'Pexi Power intake for the engine upgrades and that's it. Any help or advice is wanted and appreciated. thanks for looking. Oh, I also had National Speed upgrade the head with a MLS Head gasket with a new gasket kit for the head.
I heard it could be something with the pistons or piston rings i think he said, plus he said something about valves or something, I know how to drive but not too keen on the mechanical part of the business. I do get my hands dirty with transmission swaps and such but not the technical stuff.
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Last edited by supraheelfan; 08-29-2015 at 08:20 PM.
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Old 08-29-2015, 08:58 PM   #2
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Okay I think I figured out the blow by problem after finally finding a post on here that helped But at least it was this forum which is progress for this site. But I would still like to here any solutions if any.
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Old 09-01-2015, 08:21 PM   #3
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What's the point of a forum if nobody uses it?...
Not one reply to something as common as blow by on an old turbo engine.
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Old 10-25-2015, 02:08 AM   #4
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Make sure that your turbo has a dynamic (metal) seal and not a carbon seal. Carbon seals wear and leak oil into the intake. You did not mention the state of the bottom end of the engine. If it was properly rebuilt, there is a piston ring wear-in procedure to follow along with changing the oil. If its a high mileage stock engine, the rings could be worn and adding extra boost will only increase the problem. A small amount of oil mist in the rubber elbow is normal.
Take the bottom hose that goes into the inter cooler off and check for oil pouring out. A small amount here is normal. If oil residue is in the air path plastic connection by the air filter, take the inter cooler off and drain the accumulated oil. Check your cylinder compression. Compression in 5 pulses should be around 156 PSI and all within 14 PSI of each other. The minimum compression is 128 PSI by the Toyota service manual. Look at the tops of the pistons with a bore scope or a flashlight and your eye. Be careful not to break the fan shroud. If the tops of the pistons are wet with oil, the rings are shot or the intake valve stem seals are leaking. You should leave the PVC system as Toyota made it.

Last edited by Bru; 10-25-2015 at 02:11 AM.
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