jQuery not supported.



GDI Intake Valve Cleaning (walnut shells)

Re: GDI Intake Valve Cleaning (walnut shells)

Postby truckdad15 » Feb 23 2020, 3:05am

The finished product - Before and After....

As you can see, this process works REALLY well and pretty much scrubs the intake port walls, intake valve stem and valve face to nearly factory-new clean! I'd say there is about 10%-15% of carbon deposits remaining in the hidden, tight places, but nothing a supplemental chemical cleaning through the intake manifold and fuel tank can hopefully finish up. ;)

Rinse and repeat for the other 7 ports and you'll be good to go. ;)

Before you re-install the spark plugs and intake manifold - disconnect the ignition coils from each bank near the back of the valve covers to dis-able the ignition source, re-install the battery cables and crank the engine to blow out any particles through the spark plug holes that may have found their way into the cylinders. Connect everything back up to completion, re-install the plugs and you should be good to go!

I should have my truck done by Sunday afternoon.

Hope this helps you guys and happy cleaning!! :D
Attachments
20200215_162150.jpg
20200215_162150.jpg (62.11 KiB) Viewed 374 times
20200222_165841.jpg
User avatar
truckdad15
Firing on 7 cylinders [L1]
Firing on 7 cylinders [L1]
Posts: 70
Topics: 4
Joined: Feb 17 2020, 5:10pm
Location: Indiana
Year: 2015
Make/Model: Chevrolet Silverado
Variant: LT
Extra Info: 4x4 - Z71 - CC - SB
Group Membership:
Registered users

Re: GDI Intake Valve Cleaning (walnut shells)

Postby Spectreniner » Feb 23 2020, 4:03am

Nice job!

I will say this as a PSA for anyone attempting this at home....make sure you don't let any media get past the valves, especially walnut. It can wreck stuff.
User avatar
Spectreniner
Armed Forces
Armed Forces
Combustion on 3 pistons [L2]
Combustion on 3 pistons [L2]
Posts: 394
Joined: Jun 23 2018, 11:44am
Years of membership: 2 years of membership2 years of membership
Location: KS
Year: 2011
Make/Model: Chevrolet Silverado
Extra Info: 1500 CC 5.3l Z71 4x4
Group Membership:
Servicemen
Registered users

Re: Intake valve cleaning

Postby chev-mekanik » Feb 23 2020, 11:50pm

The only thing missing was your before and after pictures of the valves.
2014 Z71 Sierra - Blue Topaz Metallic
4” BDS lift, Fox coil resi’s
Rigid fogs, 32” grill light, fog light BCM jumper mod
Heated steering wheel mod
Morimoto Mini D2S 4.0 HID’s
2016 radio upgrade for Android Auto
chev-mekanik
Combustion on 3 pistons [L2]
Combustion on 3 pistons [L2]
Posts: 376
Topics: 2
Images: 9
Joined: Dec 31 2014, 5:25am
Years of membership: 5 years of membership5 years of membership5 years of membership5 years of membership5 years of membership
Location: B.C. Canada
Year: 2014
Make/Model: GMC Sierra
Extra Info: 5.3L 1500 Z71
Group Membership:
Registered users

Re: GDI Intake Valve Cleaning (walnut shells)

Postby truckdad15 » Feb 24 2020, 1:03am

I finished up the job today and it's all ready for re-assembly. I took a couple more pics of cleaned intake ports/valves for reference.

As you can see in the last pics, this process is messy (even if you're particular like I am) so set aside some clean-up time afterward to get all those walnut shell shards out of there... Before/After. :)

Lastly, in my personal experience, the job really wasn't that difficult, but I must say...it's a real PITA to climb back/forth in that engine compartment a bunch of times - especially for the rear 2 cylinders; plus it's dirty, loud and I hope to never have to do this again anytime soon. I think I'll need some ibuprofen tonight and maybe if I were a bit younger, my bones wouldn't creak so loud afterward. :lol:
Attachments
20200223_162739.jpg
20200223_163611.jpg
20200223_163623.jpg
20200223_171819.jpg
User avatar
truckdad15
Firing on 7 cylinders [L1]
Firing on 7 cylinders [L1]
Posts: 70
Topics: 4
Joined: Feb 17 2020, 5:10pm
Location: Indiana
Year: 2015
Make/Model: Chevrolet Silverado
Variant: LT
Extra Info: 4x4 - Z71 - CC - SB
Group Membership:
Registered users

Re: Intake valve cleaning

Postby truckdad15 » Feb 24 2020, 1:07am

chev-mekanik wrote:The only thing missing was your before and after pictures of the valves.


Actually I did and the entire process from start to finish is outlined here:
GDI Intake Valve Cleaning (walnut shells)

I created another thread in the correct section; Ecotec 5.3 (2014-2018) ;)
User avatar
truckdad15
Firing on 7 cylinders [L1]
Firing on 7 cylinders [L1]
Posts: 70
Topics: 4
Joined: Feb 17 2020, 5:10pm
Location: Indiana
Year: 2015
Make/Model: Chevrolet Silverado
Variant: LT
Extra Info: 4x4 - Z71 - CC - SB
Group Membership:
Registered users

Re: GDI Intake Valve Cleaning (walnut shells)

Postby TheMightyWhitey » Feb 24 2020, 1:40am

If I ever decide to " clean my intake valves".....................this'll be the procedure that I do!!
MAGA
User avatar
TheMightyWhitey
Combustion on 5 pistons [L2]
Combustion on 5 pistons [L2]
Posts: 580
Topics: 62
Joined: Apr 11 2018, 12:09am
Years of membership: 2 years of membership2 years of membership
Location: Over By The Dental Floss
Year: 2016
Make/Model: Chevrolet Silverado
Variant: Hybrid
Group Membership:
Registered users
Previous

Return to EcoTec3 5.3L V8

 

  • Similar topics
    Replies
    Views
    Last post

Common search terms

thing back engine shells intake walnut valve cleaning guys today fuel last again install pretty another nice truck think rear done anyone make start

It is currently Nov 24 2020, 7:59am

  • Sponsor
Login  •  Register
Sitewide News Sitemaps & Feeds

Who is online

Users browsing this forum: No registered users and 5 guests