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The Northstar Tuner
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Discussion Starter #1 (Edited)
First I will show the problem with the old GM way to clean the rings.
The chemicals used in the kit will damage metal parts including crank bearings.
GM has a new chemical, but no new procedure yet.
The apparatus used to inject the chemical cleaner plugs up the nozzles. Also the cleaner will flow into the cylinder with the least resistance. If you are pushing the cleaner in to 4 cylinders you have to have at least one valve open.
 

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Discussion Starter #2 (Edited)
GM Upper Engine and Fuel Injector Cleaner p/n 88861802 (in Canada, 88861804) (fig. 6) replaces GM Top Engine Cleaner p/n 12346535 and p/n 1050002 (in Canada, 992872).



Use of lower quality fuels may leave harmful engine deposits that can degrade driveability. Some fuels may not burn cleanly or do not contain sufficient doses of deposit control additives, and can leave behind harmful deposits which can retard engine performance.

Characteristics of GM Top Engine Cleaner (TEC) -- TEC does not mix with gasoline containing 10% or more ethanol. Higher concentrations lead to ineffective fuel injector cleaning as explained in bulletin 03-06-04-030A. TEC must be be mixed with gasoline to perform the injector cleaning. TEC isn't VOC compliant in all 50 states. In the event it finds its way into the fuel tank due to return lines being ineffectively plugged off, TEC can affect epoxy sealer and viton gaskets.

Characteristics of NEW GM Upper Engine and Fuel Injector Cleaner (UEC) -- UEC is specially formulated to provide superior cleaning properties, meet VOC compliance, mix with fuels containing up to 30% ethanol, and not affect fuel system gaskets and seals.

UEC delivers immediate engine deposit cleaning. It has multiple service applications, including in-rail fuel injector cleaning, fuel induction system deposit removal and piston top soaking clean-up.

Refer to the illustrations for a cleaning comparison.



Fig. 7 Before



Fig. 8 Cleaned with TEC



Fig. 9 Before



Fig. 10 Cleaned with UEC

One treatment of GM Upper Engine and Fuel Injector Cleaner can deliver deposit clean-up of carburetors, fuel injectors (when used as a through-the-rail cleaner), intake valves and ports, and combustion chambers. Refer to GM Technical Service Bulletins for specific service procedures.

IMPORTANT: Do not add GM Upper Engine and Fuel Injector Cleaner into the fuel tank.

A bottle of GM VehicleCare Fuel System Treatment Plus p/n 88861011 (in Canada, 88861012) should be added to the fuel tank according to label directions after all applications of GM Upper Engine and Fuel Injector Cleaner.
 

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Discussion Starter #3
My suggestion
  1. Drain the oil first Not the filter.
  2. Leave the drain plug out.
  3. Blow off intake around the fuel injectors.
  4. Remove the fuel injctors.
  5. Add 2oz of the UEC to each cylinder through the injector holes.
  6. 16oz bottle 8 cylinders.
  7. Mark the balancer just as a reference.
  8. Turn the crank 720° by hand.
  9. This will push the cleaner into the piston ring lands.
  10. If you do this from the bottum you will see the cleaner run out the oil pan.
  11. Let the chemical set for 1 & 1/2 hours.
  12. Add 2oz of UEC to each cylinder for a second time.
  13. Turn the engine over 720° again by hand.
  14. If you need to work it back and forth to get it to go over.
  15. You should be close to or hydo lock on each cylinder.
  16. Let sit another hour.
  17. Spin engine over by hand until free. 720°?
  18. Add 1 quart oil and let it drain out.
  19. Install drain plug back into the oil pan.
  20. Fill with oil.
  21. Reinstall the fuel injectors.
  22. Start the engine and let it idle until it reaches operating temp.
  23. Drive the car in first and second gear keeping the RPM's above 3500 for 10 minutes.
  24. Perform many WOT launches.
  25. Change oil and filter.
Parts list
2 UEC
16 quarts of oil
 

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82 fleetwood - 97 deville
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sounds spiffy....my guess is you need an injector cleaner machine thingie to use it as an injector cleaner...

if i dont have a machine and wanted to do an in-tank solution...what would you use AJ?

also...

in days past...most of us would use the seafoam through a vaccuum line to achieve what your procedure does...i would assume this does it much more thoroughly?
 

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Discussion Starter #5 (Edited)
sounds spiffy....my guess is you need an injector cleaner machine thingie to use it as an injector cleaner...

if i dont have a machine and wanted to do an in-tank solution...what would you use AJ?

also...

in days past...most of us would use the seafoam through a vaccuum line to achieve what your procedure does...i would assume this does it much more thoroughly?
The GM method at this time is to use the Tank and attach the manifold with the 4 clear tubes on it. The tubes have misting jets on the end of the hoses. You install one tube into each cylinder on one bank at a time. The jets get plugged up and when they are down inside the head you can not see this. You would not get very much cleaner in that cylinder. The tank is set at 15 PSI to push the solution into the ring lands.
.
I suggest pouring it into the cylinder through the injector holes. NO TANK NEEDED.
.
.
At this time the UEC is the only engine cleaning Chemical GM has that will not damage metal parts like rod bearings and cylinder walls if it sits on them.
 

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The GM method at this time is to use the Tank and attach the manifold with the 4 clear tubes on it. The tubes have misting jets on the end of the hoses. You install one tube into each cylinder on one bank at a time. The jets get plugged up and when they are down inside the head you can not see this. You would not get very much cleaner in that cylinder. The tank is set at 15 PSI to push the solution into the ring lands.
.
I suggest pouring it into the cylinder through the injector holes. NO TANK NEEDED.
.
.
At this time the UEC is the only engine cleaning Chemical GM has that will not damage metal parts like rod bearings and cylinder walls if it sits on them.
that part i get, but on the bottle it says "fuel injector cleaner" - then it also says not to put in the gas tank...

so to use as an injector cleaner i would need to pull my injectors and then use that solution in a machine to clean my injectors, correct?

if so...what would you recommend for a good fuel system treatment/injector clearer that i can mix in my tank and deliver through daily driving?

i also plan on doing a ring cleaning at some point...prolly when i do the transmission service that i want to do...

thanks for posting some really helpful stuffs on the forum...you are turning out to be a really valuable source of information :thumbsup:
 

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Discussion Starter #7
fubar569
It says Upper Engine Cleaner First
You can use it as a Fuel Injector Cleaner. It is the best product GM has currently. If you plan to use it as an Fuel Injector Cleaner you will need a tank.
This will not clean the rings.
The rings and ring lands need to soak for a few hours.
 

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For those with experiance you can add another step....
steam clean the inside of engine with water.
Do this to a engine that warmed up to operating temp
and make sure to run it for 10 minutes after.
 

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Discussion Starter #9
For those with experiance you can add another step....
steam clean the inside of engine with water.
Do this to a engine that warmed up to operating temp
and make sure to run it for 10 minutes after.
This will not clean the rings
 

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I did say "add" another step.
It will clean the carbon off just about everything
in the upper portion.
It works real good after the TEC has softened up all
the carbon and goo.
 

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95 Fleetwood Brougham / 01 DTS / 11 CTS Lux / 11 DTS Platinum
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I hate to be this guy again but why does the butterfly in FIG 10 look like it was scraped to hell by a screw driver or something.
 

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Discussion Starter #12
You would have to ask GM's R&D department.
 

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Yeah I'm not talking about the cross thatching. I'm talking about the blatant vertical gouges in that thing. Someone scraped the crap out of that.
 

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Discussion Starter #15

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Discussion Starter #16 (Edited)
This is a piston from an 02 Eldo. #?
I found the second ring suck on #4 piston. It used oil.
This piston has a medium amount of carbon build up.
I put about 10 drops of the UEC on the top and then let it sat for 2 hours.
I then blew off the the piston with some brake cleaner, but I did not break up any more with the brake cleaner. I kept the brake cleaner at a distance.
The part that was left on the piston was very soft and loose. It scrapped off easy.
It I had this in an engine I would have had more solution (2oz) and I would have been able to start the car and raised combustion chamber pressures to break up the remaining carbon.
 

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Well I'll be dipped. Huh, someone should ask them.
 

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I'm needing this done because I am beginning to blow back oil. How much does this procedure usually cost?
 

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I'm needing this done because I am beginning to blow back oil. How much does this procedure usually cost?
whatever your dealer charges for the cleaning solution, plus 2 oil changes, and about an afternoon of your own time...

do not pay to have someone do it...a shop at 50+ bucks an hour will make a killing off you...
 

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Discussion Starter #20
whatever your dealer charges for the cleaning solution, plus 2 oil changes, and about an afternoon of your own time...

do not pay to have someone do it...a shop at 50+ bucks an hour will make a killing off you...
We Be Up In The Sticks But Wees Stil Gets $100 an hour.
It Would Be Hard For Me To Think What A Big City Dealer Gets. Well Hmmm
 
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