cleaning through the PCV valve?

[JHZR2]

Hi,

Is it possible, or is there any benefit to send some sort of fuel cleaner through the vacuum of the PCV system?

If so, what would it benefit? What should I use? FP? Neutra? lucas? seafoam?

Can I just stick it into a basin of the stuff, or will that pull too much liquid in too fast and cause problems? Otherwise, would an aerosol product shot into the tube a better idea?

Thanks!

JMH

 

[Bio-T]

Amsoil Power Foam is the best I have ever used for this. I spray it into the PCV valve while the engine is running.

 

[olympic]

The PCV valve is a good location to inject the cleaner since most of the crud gets into the intake through there. Spray foams like Amsoil are safe and easy. If you use a liquid cleaner, you have to be careful and control the rate the engine ingests the cleaner. If it takes too big of a gulp you can hydrolock a cylinder and destroy the engine. That's why I like to stick with cleaners in a spray can.

 

[TallPaul]

quote:

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Originally posted by 59 Vetteman:
Amsoil Power Foam is the best I have ever used for this. I spray it into the PCV valve while the engine is running.

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Nice tip. I like this spray into the vacuum line thing a lot better than having it suck up a bottle of cleaner. Suppose you still want to change the oil soon after.

 

[elwaylite]

quote:

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Originally posted by 59 Vetteman:
Amsoil Power Foam is the best I have ever used for this. I spray it into the PCV valve while the engine is running.

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59,

I'm planning to try one of these cleaners and will probably go with the power foam over seafoam, but what I wonder after peoples comments is do you need to change the oil and spark plugs after one of these treatments. Ive read about fouling and such and oil contaminents, if thats the case I'll just have to time it together. Also, what kind of mileage interval is good for these treatments?

[ December 15, 2004, 09:15 AM: Message edited by: elwaylite ]

 

[Razl]

quote:

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If it takes too big of a gulp you can hydrolock a cylinder and destroy the engine.

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I never heard of hydrolock happening from this...can this happen if you spray a cleaner directly into the throttle body?

I have to admit, I'm guilty of depressing the an aerosol can wide open with the engine first off. Then after 5 minutes, I start the car until the smoke clears from the tailpipe and hit it again wide open for 10-15 seconds, all while revving the engine just enough to keep it from stalling. Is this bad?

 

[olympic]

Anything in a spray can will not hydro lock the engine. The original post talked anout using a liquid cleaner in a basin and then submerging the PCV hose in it. The engine vacuum would draw in the liquid at a very fast rate and may take in enough to completely fill a combustion chamber.

I'm not sure how well these cleaners do on their own. I took the intake apart on my Taurus SHO engine and proceeded to spray the internals with Power Foam. It wouldn't remove much gunk until I got in there with a brush to scrub it a little.

It may clean the combustion chamber since there's some pretty violent activity in there to stir things up. But it doesn't seem to clean the intake passages much without a little outside help.

 

[boxcartommie22]

i have a 98 crown vic hpp, expedtion 5.4 and lincoln conti 4.6 dohc...i used bg's airintake system cleaner into the throttle body..no smoke what so ever on all my vehicles. i do this 2-3 times per year...i use a k&n airfilter and the throttle body was sqeaky clean!!!