GM decarbonization process
Melting Slicks
Joined: Jan 2001
Posts: 2,361
Likes: 0
From: Sugar Land, TX USA
Re: GM decarbonization process (MySea5)
I'm a little confused... you disconnect the tube from the throttle body (inline after the airbride and coupler) and stick a funnel in the tube where it was connected? Anyone have a picture? :D
Patrick :cheers:
That's what I'm wondering. Do you put the funnel/cleaner in the hose before or after the PCV valve at the back of the manifold? Why not just pull the entire PVC hose assembly off and pour fluid directly into the valve cover? :confused: help :confused:
Patrick :cheers:
That's what I'm wondering. Do you put the funnel/cleaner in the hose before or after the PCV valve at the back of the manifold? Why not just pull the entire PVC hose assembly off and pour fluid directly into the valve cover? :confused: help :confused:
See pic... and someone please correct me if I'm wrong :cheers:
Racer
Joined: Sep 2001
Posts: 429
Likes: 0
From: Rocky Mount NC
Re: GM decarbonization process (MySea5)
I have all the stuff necessary to decarbonize and have a quick question. I pulled the vaccum line on the right side of the intake, just behind the TB, and the tube appears too small to try and funnel anything into it. I only saw that line attached to the intake and another smaller line running to the TB. I'm assuming that I don't need to take the TB, airbridge and coupler off, do I? If there is anyone that has done this, I would appreciate some help. I feel like an idiot right about now.
Thanks :cheers:
Thanks :cheers:
Pro
Joined: Feb 2001
Posts: 685
Likes: 0
From: Somewhere in the Mid West
Re: GM decarbonization process (Chandler)
I have all the stuff necessary to decarbonize and have a quick question. I pulled the vaccum line on the right side of the intake, just behind the TB, and the tube appears too small to try and funnel anything into it. I only saw that line attached to the intake and another smaller line running to the TB. I'm assuming that I don't need to take the TB, airbridge and coupler off, do I? If there is anyone that has done this, I would appreciate some help. I feel like an idiot right about now.
Thanks :cheers:
Thanks :cheers:
Pro
Joined: Feb 2001
Posts: 685
Likes: 0
From: Somewhere in the Mid West
Re: GM decarbonization process (MySea5)
Why not just pull the entire PVC hose assembly off and pour fluid directly into the valve cover? :confused: help :confused:
Racer
Joined: Sep 2001
Posts: 429
Likes: 0
From: Rocky Mount NC
Re: GM decarbonization process (hrdtopv8)
Thanks for the re-assurance. I went ahead with the process and wouldn't you know that my funnel end was a perfect fit over the intake valve. The vacuum pulled in the solvent without a hitch. You guys weren't kidding about the smoke and the smell. I will definitely push the car outside before cranking in the morning.
Thanks again for your help. The forum is awesome! :yesnod:
Thanks again for your help. The forum is awesome! :yesnod:
Instructor
Joined: May 2000
Posts: 168
Likes: 0
From: Eugene OR
Re: GM decarbonization process (BoFuss)
Here's my :cuss *%#@*^ update after getting the car back from the dealer. There is no change what so ever. Fuel economy average is 17 mpg. WTF. It's always been 24 to 26 around town and 26 to 30 on the hwy and now it's 17 no matter what. Light ping is still there and the car is down on power by at least 30%. Very poor situation and truly frustrating. :confused: I went for a short drive last night, about 30 miles and on the way home it started to rain. At one point in 2nd gear and about 2000 rpm I stabbed it and it wouldn't spin the tires on the wet road. :mad I really hate to be a pain in the ars, but I'm very confused and really need some help. Unfortuantely there is no one in this area I'm aware of that speaks the C5 or LS1 language. Should I find someome in a bigger city that has a dyno, would that help identify the problem or do I just need a person who understands the computer. I don't know why, but I think the problem is in the computer, even though the dealer just said it was perfect. At this point I'm certainly all ears and truly appreciate the honest help and flames won't help, unless they're painted on the outside.
Thanks! :cheers:
Thanks! :cheers:
Le Mans Master
Joined: May 2000
Posts: 6,032
Likes: 124
From: Dallas TX
Re: GM decarbonization process (BoFuss)
BoFuss,
I think it's time to check your oxygen sensors, your spark plugs and wires, and maybe take your car to a reputable shop that can dyno your car with A/F and maybe work a little LS1 edit magic to tune your car up. If it's not the fuel, you're using premium right? :D then it's either the spark or the airflow. I'm not a mechanic by a long shot, but what makes power is spark, fuel, and air as the three entering elements. Since, you have fuel taken care of, tune up your air and spark. :D
To everyone else:
Carbon buildup effectively bumps your compression ratio resulting in increased horsepower up to the point where your octane gas won't support it and you start pinging/detonating. Don't think doing the decarb process is going to help performance because it won't, unless you're detonating. :cheers:
I think it's time to check your oxygen sensors, your spark plugs and wires, and maybe take your car to a reputable shop that can dyno your car with A/F and maybe work a little LS1 edit magic to tune your car up. If it's not the fuel, you're using premium right? :D then it's either the spark or the airflow. I'm not a mechanic by a long shot, but what makes power is spark, fuel, and air as the three entering elements. Since, you have fuel taken care of, tune up your air and spark. :D
To everyone else:
Carbon buildup effectively bumps your compression ratio resulting in increased horsepower up to the point where your octane gas won't support it and you start pinging/detonating. Don't think doing the decarb process is going to help performance because it won't, unless you're detonating. :cheers:
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Burning Brakes
Joined: Jun 2000
Posts: 1,122
Likes: 0
From: Annapolis, MD USA
Re: GM decarbonization process (bparker)
fact is that out of 51 different c5 that I have performed this procedure, NONE have returned
Instructor
Joined: May 2000
Posts: 168
Likes: 0
From: Eugene OR
Re: GM decarbonization process (SideStep)
QUIKAG,
Thanks for the honest feedback and the sound advise. My search is on for a more qualified person in this area that I can talk to. I've come to the conclusion that I'm not going to fix this problem until it can be identified and that's not going to happen w/o the proper help and equipment. :cheers:
Thanks for the honest feedback and the sound advise. My search is on for a more qualified person in this area that I can talk to. I've come to the conclusion that I'm not going to fix this problem until it can be identified and that's not going to happen w/o the proper help and equipment. :cheers:
