Seafoam praise/question

302GTS · May 24, 2009

Bought a can of seafoam yesterday for my 95 with a bit under 89k on her. Since buying the car, it's had a low-rpm studder at times when holding the accelerator steady. Added a third of a pint of seafoam into my gas tank, and a day later, it hasn't studdered once, so that's very good. I'm wanting to suck it through a vac line now, but don't know whether I should do it through the PCV valve, or the brake booster line? Also, could someone point me in the direction of a good diagram for both? For the brake booster, should I just pull the end of the line that connects to the vac tree?

wytstang · May 24, 2009

I did it through the brake booster, removed the line from the booster itself.

Chythar · May 24, 2009

I went through the fuel pressure regulator myself, but I pour the Seafoam into an old jelly jar first. It doesn't matter which vacuum line you use, all will draw the Seafoam into the engine. I simply found the fuel pressure regulator hose to be convenient to me.

tderrick · May 25, 2009

I used a line off the tree on the drivers side rear corner.

I also, thought you used a whole can in the tank...

Follow the instructions on the back of the can and use some in the oil also...
just before an oil change..

I use seafoam in all my engines... anything that burns gas!

I love it!

BamaZ28 · May 25, 2009

I also have used it through the brake booster on several cars.............awesome smoke show, lol!!!!

302GTS · May 26, 2009

Ran some seafoam through a line earlier, but I'm not too sure if I used enough/did it right... The line leading from the vac tree on the driver's side to the brake booster - I pulled it off from the brake booster, and started to suck up some seafoam. I ended up stopping after I didn't have someone give it any gas and the motor sputtered and died. I let it sit for about 10 minutes, and after starting it up it idled kind of rough at first, but smoothed out after driving her around for a few minutes and giving it some gas on the drive. Thing is, it didn't smoke much, if any. Did I just not use enough? Or is my motor THAT clean? Haha.

icemetalstang · May 26, 2009

smoke show

If you and your buddy want your jaw to hurt from laughter and watering eyes. Pour a half of quart of tranny fluid into the brake booster line and go for a ride. Weee (1993 grand am gt) It smoked so hard you could not even see through the smoke.

99FiveOh · May 26, 2009

icemetalstang said:
If you and your buddy want your jaw to hurt from laughter and watering eyes. Pour a half of quart of tranny fluid into the brake booster line and go for a ride. Weee (1993 grand am gt) It smoked so hard you could not even see through the smoke.

Are you insane! Do you have any idea how much a quart of tranny fluid costs these days!

Chythar · May 27, 2009

302GTS said:
Ran some seafoam through a line earlier, but I'm not too sure if I used enough/did it right... The line leading from the vac tree on the driver's side to the brake booster - I pulled it off from the brake booster, and started to suck up some seafoam. I ended up stopping after I didn't have someone give it any gas and the motor sputtered and died. I let it sit for about 10 minutes, and after starting it up it idled kind of rough at first, but smoothed out after driving her around for a few minutes and giving it some gas on the drive. Thing is, it didn't smoke much, if any. Did I just not use enough? Or is my motor THAT clean? Haha.

Depends. You might not have used enough Seafoam, or let it sit for long enough. Or your engine might be that clean. How much Seafoam got sucked in? 1/4 can? 1/3 can?

302GTS · May 27, 2009

Chythar said:
Depends. You might not have used enough Seafoam, or let it sit for long enough. Or your engine might be that clean. How much Seafoam got sucked in? 1/4 can? 1/3 can?

Not sure of the exact amount, but if I had to guess I'd honestly only say about a fifth made it in before the engine died. I'll do it again tonight and add a little bit more, and let it sit twice as long.

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