shomann

I was a little confused at first about exactly where the PCV valve was. Once I had that figured out I ran into another problem.

Which end of the hose is supposed to be removed? The way most post read it would seem to remove the hose from where it went into the throttle body/plenium. When I did that, there was not enough suction power to take the Seafoam.

So, I left the PCV valve hose on the throttle body and it worked like a charm. My car did not smoke alot, but some. I think I repeat the treatment next oil change to be sure.

Instructions (GS 430 specfic):

I used (as per bottle) about 1/3 of a pint of Seafoam into the throttle body in this manner. The other 2/3rds I dumped into the dirty engine oil and changed it immediately after.

Wide view from driver's side (removing the engine cover is a must):



Cover removed:



PCV Location (right next to the engine oil fill, remove hose clamp here):



Leave this end of the hose attached, throttle body will suck in air and small amounts of Seafoam without stalling or flooding. Do NOT immerse the end of the hose into what ever container you are using as it will likely flood the engine.



Enjoy being Seafoamed

GSteg

iTrader: (15)

Take the PCV valve that's connected to the oil crank case. The throttle body will suck in air, thus sucking seafoam through the hose.

shomann

So in essence, it the Seafoam hits the throttle body first - that's how I did it

GSteg

iTrader: (15)

yes...there is onle one way. If you take the hose out of the throttle body, the seafoam will go into the oil crankcase. If you take the house out of the oil crankcase, seafoam will go into the throttle body

Dslexic

iTrader: (4)

Awsome, Seafoamed my Gs300... Now I need a new oxygen sensor!!

kenkaniff

Dyslexic, how'd you mess up your old sensor?

VNN326

iTrader: (21)

read his rank "Rookie" thats why. lol jk probally the o2 was needing a change in the 1st place.

milky

iTrader: (9)

any noticeable changes after ?

shomann

Besides white smoke?

The car seems to idle higher at first, but then today I noticed it dropping back to 500-600RPM range again. It seems a bit smoother and quieter, but that may just be wishful thinking.

One thing I have seen noted over and over that I DIDN'T do last night is to replace your spark plugs after this procedure. I am due anyway and hope to accomplish that within a week or so.

shomann

Oxygen sensors are usually pretty easy - the trick with them is pre-twisting the connection cable before screwing it back in. Definately a DIY job - last night when I was under the car I happily noted the rear sensor is in a place easy to get to.

In fact, while I am post-whoring and on the subject, the layout of this car is pretty nice. Yeah, the starter is in a weird place, but for most of the maintainence items it is well done (IMHO). All except that is for the oil filter. Do you guys remove your entire undertray to access that?

I cheated and "modded" the tray with a utility knife. The next change will be much easier.

GSteg

iTrader: (15)

No need to pre-twist anything. Just screw in the sensor, and THEN connect the connector

shomann

Ahh - I am used to my Subaru where the cable wasn't removeable.

Come to think of it, I would HATE to replace the O2 sensor on that car

kit cat

iTrader: (6)

i hate that oil filter location...i need two oil pans to do an oil change.
and Shomann, if I do need an O2 sensor, I may bug you .

shomann

Feel free, anytime.

If you can stomach cutting into your car, it takes about a minute to clear up that little tray problem

FrayKay

Not to sound really stupid, but can you explain to me what SeaFoam is and why you do it?