Intake clean. WOW!

SouthernSilveradoGuy85 · March 24, 2015

Spray for 30 seconds and then wait for idle to go back down to normal. Repeat.

I too was waiting for an oil catch can before doing it, but decided why wait? I can always do it again when I get one.

Thanks. I've looked on websites and Youtube and couldn't find a definitive answer. They all just read the same directions.

fondupot · March 24, 2015

Had to return my spring compressor to Autozone today.....saw that can of CRC....couldn't help but take it off the shelf and swipe the card.

Gonna do it next over the weekend when I get back from a business trip.

Cheers.

darkfox1 · March 24, 2015

Every time I sprayed it I estimated 30 seconds (by counting to 31 cos I tend to count seconds fast..) and would wait until I heard the engine rev down a bit, maybe 5-10 seconds, then repeat.

I ran about 2 minutes worth of spray into the engine in my case. The can's probably 40% left honestly.

At first I didn't notice a difference, which is kind of weird, I mean there was a slight one as I started to drive home from the salvage yard but it didn't really pick up until the 2nd time I drove it and I was very surprised. I wish it drove like that all the time.

So a catch can will help prevent this? I'm also wondering if a better fuel filter/"cleaner" fuel will help? Seems like the valves are getting washed in fuel right?

Edited March 24, 2015 by darkfox1

SouthernSilveradoGuy85 · March 24, 2015

Every time I sprayed it I estimated 30 seconds (by counting to 31 cos I tend to count seconds fast..) and would wait until I heard the engine rev down a bit, maybe 5-10 seconds, then repeat.

I ran about 2 minutes worth of spray into the engine in my case. The can's probably 40% left honestly.

At first I didn't notice a difference, which is kind of weird, I mean there was a slight one as I started to drive home from the salvage yard but it didn't really pick up until the 2nd time I drove it and I was very surprised. I wish it drove like that all the time.

So a catch can will help prevent this? I'm also wondering if a better fuel filter/"cleaner" fuel will help? Seems like the valves are getting washed in fuel right?

The problems is with Direct Injection is that the injector injects directly into the cylinder so the gas never touches the valves. The other 2 types are sequential (which some call it different) and Throttle Body. Sequential there's also an injector for each cylinder but the injectors are in the intake runner right above the valve. So the gas is able to wash the top of the valves. What happens is oil vapor (I guess that's what you'd call it) goes up through the valve cover through the PCV valve and back into the air intake. With a Direct Injection the only way to stop it from what I've read is a catch can and that will catch the oil.

nadrojcote · March 24, 2015

But not all of it.

Gmcant33 · March 24, 2015

Will running e85 help decrease buildup rather than 87 89 91? Or gas has nothing to do with this??

bdbake01 · March 24, 2015

No gas, of any type, will have any effect on this issue since the gas never sees the back of the valves. Southern described it very well. Non-DI engines can benefit, but not DI.

darkfox1 · March 24, 2015

That makes sense!

Guess I need to look into a catch can. Or some kind of embedded valve wash system that I can spray from in the cab at random intervals.

bdbake01 · March 24, 2015

Just a suggestion mind u.

nadrojcote · March 24, 2015

Yes you could use a nos setup into your pcv hose that you hook a catch can up to with seafoam or CRC. Give it a little shot every now and then. The only way to prevent this build up is to use products like CRC every 10,000 miles or even every oil change in conjunction with a catch can. They also say for people that perform short trips all the time it will build up worse.

There are some good services for cleaning the valves which will become more common at your local repair shop as time goes on and all vehicles become GDI.

darkfox1 · March 24, 2015

NOS idea aside (I like that idea btw. ) I am thinking it may be a good idea to install some sort of closeable valve in the air intake tube to make this easier to do on a regular basis. Just open it, stick the hose in and do your thing.

I mean not that pulling the tube of the air box was hard, but if I were to say get a CAI intake or something.. might be a little trickier. And it seems the closer you get to the TB the less of this stuff gets lost in the intake tube and goes into the TB.. Some kind of tiny open/close nozzle would do the trick.

nadrojcote · March 24, 2015

NOS idea aside (I like that idea btw. ) I am thinking it may be a good idea to install some sort of closeable valve in the air intake tube to make this easier to do on a regular basis. Just open it, stick the hose in and do your thing.

I mean not that pulling the tube of the air box was hard, but if I were to say get a CAI intake or something.. might be a little trickier. And it seems the closer you get to the TB the less of this stuff gets lost in the intake tube and goes into the TB.. Some kind of tiny open/close nozzle would do the trick.

All you would really need to do is drill a hole in the top of the air tube right before the throttle body and use a rubber grommet to seal it.

nadrojcote · March 24, 2015

Or buy a can of seafoam to get your hands on one of the little u shaped hose protectors.

bdbake01 · March 24, 2015

Yes you could use a nos setup into your pcv hose that you hook a catch can up to with seafoam or CRC. Give it a little shot every now and then. The only way to prevent this build up is to use products like CRC every 10,000 miles or even every oil change in conjunction with a catch can. They also say for people that perform short trips all the time it will build up worse.

There are some good services for cleaning the valves which will become more common at your local repair shop as time goes on and all vehicles become GDI.

Not a bad idea, but I wasn't suggesting he inject CRC ;)