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Need help installing my oil catch can.

Check valve and valve cleaning?

Re: Need help installing my oil catch can.

Postby 19trax95 » Oct 22 2019, 12:47pm

The vortec motors and get away without one.

They still have fuel going over the intake valves which helps keep them clean.

The ecotec motors, and really any of the current DI motors, a catch can is a 100% necessary item in my opinion. There is no fuel going over the valves so they get dirty, and it happens pretty quick. And once they get dirty, it's very hard to truly get them clean.
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Re: Need help installing my oil catch can.

Postby FlameOut » Oct 22 2019, 2:02pm

19trax95 wrote:The vortec motors and get away without one.

They still have fuel going over the intake valves which helps keep them clean.

The ecotec motors, and really any of the current DI motors, a catch can is a 100% necessary item in my opinion. There is no fuel going over the valves so they get dirty, and it happens pretty quick. And once they get dirty, it's very hard to truly get them clean.


What is a good way to clean them? I just bought my truck with 30,000 miles and just added a catch can but now wondering how much gunk has accumulated in those previously driven 30,000 miles
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Re: Need help installing my oil catch can.

Postby 19trax95 » Oct 22 2019, 3:09pm

You can try the chemical cleaners, but depending on how bad they are,those may not get them. In an ideal world you'd pull the heads and remove the valves to clean them.

But in reality, that would almost never get done. So you can remove the intake and make sure the valve is closed, then use the chemical cleaners and get in there with a plastic pick and try to break up as much of the crud as you can then clean the holes out.

Still won't get it perfect, but without removing the heads, it's likely the best you'd get it
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Re: Need help installing my oil catch can.

Postby durandetto » Oct 22 2019, 10:14pm

Rambodog wrote:The TB would need cleaning at some point without the can. With it, the air coming back is cleaner than without so it should take much longer to get dirty depending on how much the can captures.
The can stops oil from the crankcase from getting in the intake via the pcv port. The CSS helps keep the oil from the valve cover ports from getting into the intake tube and going through your throttle body. In the old vortec you would benefit more from a CSS than a catch can as the injectors keep the valves clean but the throttle body gets nasty from the moisture and oil coming through the intake tube.

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Re: Need help installing my oil catch can.

Postby durandetto » Oct 22 2019, 10:22pm

FlameOut wrote:
19trax95 wrote:The vortec motors and get away without one.

They still have fuel going over the intake valves which helps keep them clean.

The ecotec motors, and really any of the current DI motors, a catch can is a 100% necessary item in my opinion. There is no fuel going over the valves so they get dirty, and it happens pretty quick. And once they get dirty, it's very hard to truly get them clean.


What is a good way to clean them? I just bought my truck with 30,000 miles and just added a catch can but now wondering how much gunk has accumulated in those previously driven 30,000 miles
With 30k it shouldn't be too bad. I would just keep up with regular induction cleanings. You can pull the intake to get better access to the intake valves. From there you can see how bad it is and do a little manual cleaning of the valves as well. Just try not to get too much cleaner and gunk down in the cylinders. The intake is reletively easy to remove and the gaskets are less than $40. During my second round of injector replacement I took pictures of all my intake valves at 70k. They are pretty bad, but when my injector seals are all intact the truck runs great. I've ran a couple BG intake cleaners through it as well as some manual cleaning while having the intake off. ImageImageImageImageImageImageImageImage

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Re: Need help installing my oil catch can.

Postby FlameOut » Nov 02 2019, 4:30pm

I've only put 93 miles on my truck since adding a catch can, so I really wasn't expecting much to accumulate, but checked it anyhow. I was suprised at what I saw!
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Re: Need help installing my oil catch can.

Postby FoxProDenali » Nov 02 2019, 4:40pm

That's that cold weather frothy funky goodness right there.
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Re: Need help installing my oil catch can.

Postby Spectreniner » Nov 02 2019, 10:18pm

FlameOut wrote:I've only put 93 miles on my truck since adding a catch can, so I really wasn't expecting much to accumulate, but checked it anyhow. I was suprised at what I saw!

Yup....DI is dirty
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