I have a couple questions about the top end cleaning procedure. You said that the top engine cleaning fluid(2 cans?) can be put right in through the PCV via a funnel....... is that the side disconnected from the throttle body intake(right past the MAF & airbridge) into the passenger side or from the PCV valve into the intake? Also, to keep the car from stalling, keep it rev'd until all fluid is sucked in? Should the engine be hot/warm/cold/doesn't matter? I just want to be sure when I do this so I don't screw ANYTHING up. Thank you!
Steve

 

TTT.....

 

Um, the top end cleaning goes in the combusion chambers, not the oil system.

It goes in through the spark plug holes to be left to sit overnight.

 

Hi Kewl,
Hey, I have a post by C5 Tech about a simple way of doing this. I will try to figure out how to send it to you so you can read it. His way is SO MUCH SIMPLER than pulling plugs, etc.!!!!

Steve

 

cool. let me know. Also fwiw, here is the post c4c5specialist (paul) posted on how to do the procedure.

(again let me know if there is a better way).

Okay, first thing, go down to your GM dealer and purchase 2 cans of liquid top engine cleaner #1050002. That’s the part number. And get oil and filter, as you will have to change the oil after this procedure.
Second, let the car sit until it gets cold before you start this procedure.
Now, are you ready???? First, remove all spark plugs.
Next, evenly divide the 2 cans to feed 8 cylinders.
Remember that this will get messy, so have plenty of rags around, and put something under your car, and not all the cylinders will take all the chemical.
Next, add the cleaner to each cylinder, some may pour out, and some may take all of it. I leave rags under each plughole.
Then, pop a cold one because the cleaner must sit at least 6 hours, I like to see 12, but at least 6 are the minimum.
The next morning or whatever put a bunch of rags over all the plugholes, as you must crank over the engine to expel the entire cleaner. It’s going to leave a mess, so be warned. Crank over then engine for about 15 seconds, that’s all it takes. Clean up all the residual off the manifolds, with brake cleaner or something. Install the plugs.
Roll the vehicle outside, cause MAN is this going to smoke, and stink. Start it up, it will run rough for a while, this is common, and it will smoke too. Allow to idle for 20 mins. Then shut the engine down, and change the oil and filter.
The cleaner dilutes the oil so we don’t want to drive the car until after all has been consumed in the chamber, and the oil is warm.
Ok, now for the test drive, go to a highway, and drive a highway speeds for about 20 mins, to expel the cleaner from the exhaust. The car WILL smoke for some of the test drive, this is NORMAL. But by the time that you get back, it should be pretty much gone.
Ok, that’s it. Just remember, this is informational, nothing more. You may get some oxygen codes or some misfire until the cleaner is burned off, this is NORMAL. Just reset the codes, and you will be fine.
I have had a lot of success with this, as have some of the members that I have emailed this process to, but you must follow it exactly, thanks.
Best to all, and I remain, c4c5 specialist
------------------
c4c5mechanic, GM certified in all areas. ASE master certification w/L1. Club Corvette of CT member.

 

Thanks for the procedure Kewl, I sent that other post to you via E-mail. Let me know if you get it. I'm on my way out the door to work now, so I'll check the E-mail when I get home later.

Steve

 

The PCV valve is inline off the right side of the intake.Simply disconnect the hose and use a funnel to induce the top engine cleaner into the intake (slowly)...You could also use the vaccum source off the brake booster...You will need someone to keep the RPM's up to prevent stalling.When you get to the end of the 2nd can,let it stall and sit overnight.This will best work when the engine is at operating temperature.After the procedure,you will want to change the oil,and you may want to install new spark plugs. :yesnod:

 

Thank you C5 Tech!

Steve

 

C-5 TECH,

Is there any advantage (or is it advisable in your opinion) to run some water through the PCV line, prior to the above procedure? I know that GM had that instruction on a top end cleaner that they sold some years ago.

I can't think of any reason not to use the water to soften the carbon a little before the cleaner is introduced, but would like to know if this is no longer considered necessary.

Thanks.
Mark