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Intake clean. WOW!

bdbake01

By bdbake01
in Engines & Drivetrain

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bdbake01
bdbake01

yep, gotta admit the scraper is genius. Probably more reliable than the wife. DEFINITELY less mouthy about the situation.

nadrojcote
nadrojcote

I just did my truck with seafoam. I can't tell a huge difference yet, but we will see over time. Used my window scraper to keep the rpm around 2000.  

bdbake01
bdbake01

Ok, so lately I've been noticing the 6.2 stumbling a bit, hesitating, lower mileage - even more than expected for winter - etc. and began getting more concerned about intake valve buildup. 26k miles

Posted Images

RobZ71LM7 Enthusiast

RobZ71LM7

Posted
Posted

If you don't you'll have higher engine wear. The Seafoam when used as a top engine cleaner will wash down the cylinder walls and you'll have high iron numbers-seen it before on used oil analysis*. I only use these cleaners right before an oil change. I also don't recommend adding it to the oil-it's an old school harsh solvent that is not good to get in your oil.

 

 

*Years go I was dumb enoigh to do this with GM top engine cleaner and my iron #'s quadrupled for that period and were normal before and after.

Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

Curious can this be done in ones garage 117 for labor did they have to remove parts or such just curious I'm thinking about doing the same thing also is this product sold in autozone wish we had before and after pics but I understand these engines are like a temples maze glad u did it and haven't had any issues hopefully I get around it

 

You can do the BG service yourself if you have the right tools. Check it out on YouTube to see some videos of people doing it themselves and the results they got. There's a special dispenser you need to put the chemicals into the intake....some kind of canister contraption with a pressure gauge on it. The $117 was mostly time really. They don't remove any parts or anything.

  • Like 1
Gmcant33 Enthusiast

Gmcant33

Posted
Posted

You can do the BG service yourself if you have the right tools. Check it out on YouTube to see some videos of people doing it themselves and the results they got. There's a special dispenser you need to put the chemicals into the intake....some kind of canister contraption with a pressure gauge on it. The $117 was mostly time really. They don't remove any parts or anything.

I

 

Oh ok cool only promblem I just change the oil last week :(

Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

I

 

Oh ok cool only promblem I just change the oil last week :(

 

Yeah I had just gotten one of my free oil changes before I did my BG service so I ended up having to pay for a second oil change after only 700 miles of driving after the previous change. I did not plan that well at all....

brwk Enthusiast

brwk

Posted
Posted

CRC GDI IVD INTAKE VALVE CLEANER treats the "dry" side of the system to clean tough deposits from intake valves, while CRC 1-TANK Power Renew® treats the "wet" side; the fuel system, resulting in the DEFINITIVE cleanup for your fuel system.

 

Doesn't say anywhere to change oil

  • Like 1
Sierra Sik Enthusiast

Sierra Sik

Posted
Posted

What about a couple tanks of E85 every once in a while ? :dunno:

patriot Enthusiast

patriot

Posted
Posted

What about a couple tanks of E85 every once in a while ? :dunno:

Won't do a thing for the intake valves. The fuel is injected directly into the cylinders, so the valves don't get washed off.

  • Like 2
RobZ71LM7 Enthusiast

RobZ71LM7

Posted
Posted

CRC GDI IVD INTAKE VALVE CLEANER treats the "dry" side of the system to clean tough deposits from intake valves, while CRC 1-TANK Power Renew® treats the "wet" side; the fuel system, resulting in the DEFINITIVE cleanup for your fuel system.

 

Doesn't say anywhere to change oil

 

Yeah, it's an aerosol can.. others in this thread are talking about pouring from a bottle of liquid sea foam which is a big difference. Also even using the serosol spray if you don't have the RPM's high enough you can easily contaminate the oil, but hey it's your engine. Of course the manufacturer doesn't tell you that you need to change the oil-an extra step adds complications. Ask over at BITOG if you should change your oil afterwards. ;) High iron everytime.

Gmcant33 Enthusiast

Gmcant33

Posted
Posted

CRC GDI IVD INTAKE VALVE CLEANER treats the "dry" side of the system to clean tough deposits from intake valves, while CRC 1-TANK Power Renew® treats the "wet" side; the fuel system, resulting in the DEFINITIVE cleanup for your fuel system.Doesn't say anywhere to change oil

 

Alright I'm confused lol I thought u were ?? I don't know never had service done before so my lack of experience with this does not help

GuyGene Enthusiast

GuyGene

Posted
Posted

I just read this entire thread! And, I have a few simple questions: all this valve mess is due to direct injection?!? My '96 Silverado extended cab long bed 350 got 19.84 mpg on the last trip I checked it. That's good I think. So, is direct injection for better mpg, more power, etc.? At the expense of maybe shorter engine life?Y'all can see I'm one for long term usage of my trucks...

  • Like 1
Gmcant33 Enthusiast

Gmcant33

Posted
Posted

I just read this entire thread! And, I have a few simple questions: all this valve mess is due to direct injection?!? My '96 Silverado extended cab long bed 350 got 19.84 mpg on the last trip I checked it. That's good I think. So, is direct injection for better mpg, more power, etc.? At the expense of maybe shorter engine life?Y'all can see I'm one for long term usage of my trucks...

 

Yes direct fuel injection is made for better fuel efficiency, better timing, more power, and etc. though it comes at cost that many are noticing after 12-15k miles that valves look as if they seen 80K+miles. Your 96 350 getting 19.84mpg is shocking to me those are some good #s

  • 1 month later...
HondaHawkGT Senior Enthusiast

HondaHawkGT

Posted
Posted (edited)

Ok, so lately I've been noticing the 6.2 stumbling a bit, hesitating, lower mileage - even more than expected for winter - etc. and began getting more concerned about intake valve buildup. 26k miles after all. Decided to Seafoam/CRC. Went with the CRC GDI IVC because #1- it appears to be a product developed specifically for this application instead of generalized top engine cleaning such as Seafoam (which I'll say has served me well in the past and may do just fine) and #2- Anything with a name comprised entirely of acronyms must mean business.

 

Oh. My. God.

 

The difference was simply amazing. I guess the bad behavior had sneaked up on me, but I had no idea just how bad it had gotten. Worth EVERY penny. Even has a $5 mail in rebate right now. I'm gonna do this every 5k miles.

 

 

  • Rough idle - gone
  • Off idle stumble - gone
  • Not-so-smooth acceleration - gone
  • Power - it's back
  • Mileage - early reports from ~100mi would suggest absolutely no less than a 4 mpg jump. No joke. Amazed
I finally ran a can of this through my engine today. My cold engine idle began to sound a little off a few months ago. When on the throttle the engine just didn't seem as crisp as it used to be. I installed my Elite CC at 10k miles so I figured I had some buildup.

 

I disconnected the PCV line between my catch can and intake manifold and injected it that way. I had to rig the pedal to hold revs above 1k rpm or it was easy to stall out. After the can was empty I let it heatsoak for an hour, which worked out perfect for doing an oil change (Mobil1 0W-20 EP).

 

There is a definite improvement after using the intake cleaner. Better idle and no more off idle stumble just as bdbake noted. I highly recommend it.

 

The main ingredient in CRC GDI IVT is PEA - Polyether Amine. This is the same active ingredient used in Chevron Techron, but the CRC product is extremely concentrated.

Edited by HondaHawkGT
  • Like 1
HondaHawkGT Senior Enthusiast

HondaHawkGT

Posted
Posted (edited)

Update:

 

I put a couple hundred miles on the truck since cleaning it and thought I'd pass along what I've noticed.

 

The engine definitely runs smoother - cold and warm idle, off-idle revving, highway cruising. VERY noticeable when cruising at 1700 RPM on the highway. Smooth as silk.

 

Since July I had what felt like torque converter shudder during WOT acceleration between 35 and 50 mph. It appears my TC is fine. Evidently this shudder was caused by a misfire, it's completely gone now.

 

It's hard to say if my fuel economy changed yet. If it did it's very slight.

 

By the time I installed my Elite CC I already had 10k miles on the truck. Also, my line of work requires making lots of short trips which probably contributed to carbon build too. Seems like I had a lot more buildup than I had anticipated for only having 15k miles on it.

Edited by HondaHawkGT

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