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  #31 (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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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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Old 12-17-2007, 12:03 AM
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engine cleaning

I've done 1-2qts kerosine with 3-4qts oil mixed. But fill up with kerosine?? Sounds like time for a major rebuild.
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Old 12-17-2007, 12:38 AM
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Quote:
Originally Posted by dawg
run kerosene for a few hours? I bet you got alot of blowby in that motor and a few wiped cam lobes lol

nope, no damage was done to the engine, it still runs strong 5 years later.
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Old 12-17-2007, 09:41 PM
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amsoil makes powerfoam, same thing, sort of. spray into intake or carb with hot engine, let it set, and go blow it out, smokes worse than seafoam , my neighbors love me
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  #36 (permalink)  
Old 02-16-2008, 12:53 PM
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Quote:
Originally Posted by super_silent
I sent an email to the folks at Sea Foam and got a quick, & really detailed reply. Here is what they wrote:

Mike it could be what you say or part of the ring is stuck in the groove due to varnish, at any rate put 4oz of SF-16 in the oil run the unit for 25 KMs and check the oil if dirty change the oil and filter if not dirty do not worry. I would also do the following with the rest of the can. For a gas (not diesel) fuel injected car, warm up the car and make sure
it is outside as there will be a lot of smoke during and after the
application.
With the car running at running temp, lift the hood and take the brake
vacuum line off the brake booster which is located on the fire wall
driver side or take the PCV line out. Pour slowly can of SF-16 down the line this will melt
the varnish that holds the carbon at the back of the intake valves and
top of the pistons, you might have to turn up the RPMs a bit so the
car will not stall.. After can down the line shut the engine off and
put the line back on . Let the unit sit for 15 minutes. Pour
the balance into the gas tank this will lubricate the fuel pump remove
moisture and clean the lines, filter and the injectors. The injectors are not too bad these days.
Now the show! Start the car and find a safe place from
a stop drive the car aggressively you need some load on the engine slow down and stop do
it again the smoke will be gone after 1KM I need the pressure (load) to
get rid of the varnish/carbon.
You will notice a better idle, better fuel economy and more power. Did
you know that Sea foam will stabilize fuel for over 2 years, and works
in all 2,
4 stroke and diesel engines?
Then do your compression test if not a mechanical problem this should bring the compression back to normal on the #7 cyl.
Regards Paul
'Ive done that, then I reset the computer (disconnect battery, pump brakes a few times) and check engine line went off. Now its back on again IM not sure what to do next.
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