Rough Idle Solved!

[cbrsilv15]

19 hours ago, Sierra Dan said:

Running E85 helps keep the valves clean also.

How is that possible?  These GDI motors don't have gas sprayed over the intake valves, like the older LS motors did.  It's injected directly into the combustion chamber.

[Centex14]

116k miles never using a catch can. Got almost 2000 miles on this oil change and no loss. It’s amazing how many vehicles survive without catch cans and go hundreds of thousands of miles.


2014 z71 LTZ
Volant Intake
Borla Exhaust
Diablo

[Sierra Dan]

10 hours ago, cbrsilv15 said:

How is that possible?  These GDI motors don't have gas sprayed over the intake valves, like the older LS motors did.  It's injected directly into the combustion chamber.

E85 is a clean burning fuel which reduces deposit created by the engine.

No soot out of the tailpipe anymore is all the proof i need.

Spark plugs are a perfect color also.

[Sierra Dan]

7 hours ago, Centex14 said:

116k miles never using a catch can. Got almost 2000 miles on this oil change and no loss. It’s amazing how many vehicles survive without catch cans and go hundreds of thousands of miles.


2014 z71 LTZ
Volant Intake
Borla Exhaust
Diablo

No catch can here either.

Just E85 and no more 0w20 water!

[Darmichar]

Do the trucks smoke like a freight train when you're using the seafoam spray in the intake?  I just traded my 2014 for a 2018 and would like to get ahead of this with this truck.  My 2014 had 88,000 miles and was starting to have rough idle / poorer MPG issues.  I'd like to do the seafoam treatment at every oil change but don't want to be fogging the neighbors out either.

[cbrsilv15]

The smoke shows are for engines with a ton of buildup. It’ll smoke some, but nothing to worry about. I did it on my old truck with 80k and there wasn’t much smoke. Wife’s TSX had some, but nothing like a freight train. Just go for a drive on the expressway in M5/M7 mode and keep the rpms up for a few miles and it’ll be all good. 

[Baytrucker]

On 5/26/2016 at 7:24 AM, SierraMyst said:

Could you more specifically tell me where in the intake did you add the seafoam please?

I would like to know this as well. A picture would be great.

 

Also, has anyone tried the CRC spray?

[Centex14]

The seafoam hose is pre-bent to snake between the intake right before the throttle body and inject there.


2014 z71 LTZ
Volant Intake
Borla Exhaust
Diablo

[Darmichar]

On 8/28/2018 at 9:20 AM, cbrsilv15 said:

The smoke shows are for engines with a ton of buildup. It’ll smoke some, but nothing to worry about. I did it on my old truck with 80k and there wasn’t much smoke. Wife’s TSX had some, but nothing like a freight train. Just go for a drive on the expressway in M5/M7 mode and keep the rpms up for a few miles and it’ll be all good. 

So you just unload a can into the intake occasionally?

[cbrsilv15]

I did it in my 07. You’re supposed to use 1/3 in the tank, 1/3 in the oil and the last 1/3 of a can in the intake. There’s a special GDI intake cleaner that works for the newer GM GDI motors. I did it once when I first got my truck, but I sprayed it wrong. Lol

[HondaHawkGT]

On 2/6/2016 at 11:27 AM, FL335i said:

I agree the catch can is only catching what is going through the system and I am looking at getting one. Let's say what you have in the pic above is 4oz in 400 miles. basically 1oz/100mi is what goes through the system. On a 7,500 mi OCI, using that math, I would use 75oz of oil or 2.3qts. That's an alarming rate of oil ingestion. Note I stated ingestion, not consumption. The motor is not burning it through the rings, valves etc. We are talking about how much is ingested via the PCV system. For all the amounts of oil I see on the catch can threads.... how were these people not adding 2qts of oil between oil changes?

 

The stuff in the catch can is usually mostly water vapor, some unburned fuel, and some vaporized oil. The colder the weather, the more water vapor. If I leave my CC connected in the winter, I usually end up with a block of ice in it by the end of the week. In the summertime, I might have an ounce of stuff in it every 2,000 miles. I use an Elite Engineering CC.

[Srcrites]

I sprayed sea foam into the throttle body and it threw a check engine code. I didn’t think it would do this after all the research I’ve done. I did leave the sensors plugged in while I did it but didn’t think it would harm them. Oh well we’ll see what the scanner says.