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  #16 (permalink)  
Old 12-14-2007, 08:33 AM
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is it safe to do that on a tbi engine? I think I might try that

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  #17 (permalink)  
Old 12-14-2007, 08:44 AM
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I have done the water thing many times it does work good.
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Old 12-14-2007, 09:44 AM
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cleaning engine internally

water works great
trans fluid in oil works good on inside of motor
but i see no body mentioned the catalytic converter getting stopped up .
if you have the converter with the small bee hive comb ,it will clog up with what you blow out of the combustion chambers .
the trans fluid in the motor cleans to well sometimes , recommended for tear down after wards ,rings start blow by after to good a clean.
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Old 12-14-2007, 11:48 AM
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Auto trans fluid is a bad idea with todays catalytic converter equipped cars. Water works great, we used it a lot in the seventies to eliminate carbon knock in cars that were not pushed too hard.

Vince
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  #20 (permalink)  
Old 12-14-2007, 01:03 PM
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yea ATF is good for lifters... bad for cats- We've used it a few times in a crutch. SeaFoam is amazing, and water injection has been proven for years- all good ideas.
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Old 12-14-2007, 03:39 PM
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Quote:
Originally Posted by mitmaks
sea foam sounds good except I live in clean neighborhood and Im afraid my neighbors will not be happy about that.

yeah, my neighbors LOVE me

'course the ex marine on the North side thinks it's funny as hell when i do the Seafoam treatment.

Trans fluid in the crankcase about 100 mi before an oil change will clean one up real well, and not harm the bottom end.

Used to do the water thing down the intake until one of the local old timey guys (that has probably forgotten more than i'll ever know) told me that was a good way to take the head off a valve...cold water on a hot exhaust valve kinda thing.
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  #22 (permalink)  
Old 12-15-2007, 06:30 AM
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Quote:
told me that was a good way to take the head off a valve...cold water on a hot exhaust valve kinda thing.
Ayuh,........... Sounds like B/S to Me,........

We're talking about a Warm motor free-wheeling at maybe 1500rpms,.......
Not a motor on a Dyno at a Full Horsepower Pull........
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Old 12-15-2007, 07:38 AM
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Gmm sells a top cylinder cleaner aswell.
if it smokes do it at night.
I used seafoam as well with great results.
poured down the throat of the carb and 1 can in the gas tank.
you can use in the oil aswell
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Old 12-15-2007, 08:37 AM
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The water thing works, the only problem with doing this is, pouring too much down the engine. Water is not very compressible and can hydro lock a engine or at the very least bend valve train components. I also wouldn't pour anything down a engine to clean it out that has a worn out timing chain. I done the water thing once on a old 68 Torino, broke the timing chain and damaged the valve train.
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Old 12-15-2007, 04:29 PM
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pouring water in the intake is safe for EFI cars.

as for crankcase cleaning, ill drain the oil and fill the block with kerosene and let it run for a few hours, cool down, run a few more hours, cool down and drain.
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  #26 (permalink)  
Old 12-15-2007, 10:03 PM
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cleaning engine internals

a few years ago i bought a caR WITH ONLY 50,000 MILES ON IT. THE OIL HAD NEVER BEEN CHANGED(I ASSUMED)I HAD TO DRIVE IT 25 MILES TO MY HOUSE,WITH IT SPITTING AND SPUTTERING THE WHOLE WAY. WHEN I GOT IT HOME I TOOK OFF THE PAN PLUG,AND THE OIL DIDNT DRAIN,IT KINDA CAME OUT IN STRINGS. I GOT 10 GAL OF DIESEL FUEL,RAN 8 OR 9 GAL THRU THE ENGINE (PAN PLUG OUT,NOT STARTED) FINALLY IT WAS RUNNING OUT OK,.PUT THE PLUG IN,ADDED 3 QTS OF TRANS FLUID,2 QTS OF OIL,STARTED AND LET IT RUN,WENT TO DINNER,WHEN I CAME BACK OUT,IT WAS RUNNING GREAT. DRAINED ALL OIL,ADDED1 QT TRANS FLUID 4 QTS OIL. TUNED IT,PLUGS,POINTS,CONDENSER,AND REPLACED GENERATOR,LEFT NEXT DAY FOR CALIF(FROM FLORIDA) NO PROBLEMS,SHIPPED IT TO OKINAWA(I WAS IN THE ARMY) WIFE DROVE IT 4 YEARS,ONLY PROBLEM WAS A BROKEN IGNITION SWITCH. (SORRY,CAP LOCKS ON)
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Old 12-16-2007, 02:34 PM
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Sea foam--removing carbon in the exhaust path.

I have a 94 S10 blazer 4x4, 4.3 vortec, and the EGR valve keeping carboning up. I take the vacuum hose off the booster and add it directly into the running engine. I will be white smoke. Sometime it takes two doses. All will be well for about 2000 miles and I have to do it again. You can add it to the gas tank every time you fill up and skip the doseing. This stuff is a carbon remover. It is not as good on enjectors as Lucus is. When you do the dose thru the vacuum line, be sure to replace the hose, then run the car a little hard in first gear until the smoke stops. I am a firm believer in this stuff.

Last edited by grumpy1; 12-16-2007 at 02:39 PM. Reason: needed title
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  #28 (permalink)  
Old 12-16-2007, 03:17 PM
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Quote:
Originally Posted by DHMag
pouring water in the intake is safe for EFI cars.

as for crankcase cleaning, ill drain the oil and fill the block with kerosene and let it run for a few hours, cool down, run a few more hours, cool down and drain.
run kerosene for a few hours? I bet you got alot of blowby in that motor and a few wiped cam lobes lol
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  #29 (permalink)  
Old 12-16-2007, 05:42 PM
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Quote:
Originally Posted by mitmaks
I need to clean engine internally without taking heads off. Should I use concentrated carb/injector cleaner, anything else?
Given the process for removing carbon from combustion chambers and valves in the shop is pretty intensive, it hard to see how a chemical dumped down the intake is going to do much. Except to add to top end bore and piston wear as it takes what little lubrication that's there and wipes it out.

Bogie
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  #30 (permalink)  
Old 12-16-2007, 11:54 PM
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One thing on EFI cars, don't introduce liquids upstream of a hotwire MAF sensor...
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