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I want to use seafoam on my car. I read all over the forums on how to use seafoam, and what I found is that I need to pour seafoam through the PCV hose. However, I had a hard time pulling out the PCV hose, and I do not want to pour seafoam into the crankcase. Someone at the Lexus dealership told me that if I pull out the PCV hose, I might need to replace it since it's old and it could crack. A video on YouTube recommended that I should not put additives in oil because the oil already have its own formulated additives.
Can I pour a whole bottle of seafoam through the gas tank containing 1/4 of petrol left? I want to clean the carbon gunk from my piston head. I also want the petrol to be highly diluted with seafoam so it can have a strong cleaning power. However, someone else told me that the octane of the gas can change and it can ruin the engine. I'm not sure who to believe.
You dont want to use the pcv hose. Its not centrally located on the plenum and only two cylinders will get cleaned. Find a vacuum hose closer to the throttle bottle.
Turkey baster is a bad idea. You want a steady consistent flow of seafoam.
There is a better vacuum hose to use than the pcv line. In this picture there is a large gray hose with spiral plastic wrap. If you follow it up, it splits into two behind the throttle body. This will assure an even distribution to all cylinders. Cap the port it connects to on the rail.
It helps to have a helper who can keep the engine at 1500 rpm so you dont hydrolock the motor. Bring the engine up to operating temp first. You want to suck enough seafoam to bog the motor but not stall it. As you approach the end have the helper drop to idle and keep feeding seafoam to make it stall. Once the engine stops, let it sit overnight.
Dont do it in the garage, the smoke will be plentiful . When you start it in the morning, it will smoke a lot. Be ready to drive it like you stole it. You want to run it to redline several times until it stops smoking. This burns out the softened oil.
You suck half a can in thru the vacuum line and the other half in the gas tank.
Good question. Did you ever play with chinese finger cuffs as a kid? Its a basket woven tube that when you stick your finger in each end and try to pull your fingers out, the tube tightens down on your fingers. Well the same principal applies when trying to remove vacuum hoses. The more you pull, the tighter it gets.
If you have some light lubricant like wd40 spray a little on the end of the hose. It will help break the bond on the port. Use a pair of pliers and rotate the hose on the port back and forth until the hose twists freely. Even then the hose may not want to pull off. So use the pliers and get behind the hose and push the hose off the port. Pushing does the opposite of pulling. It expands the rubber hose making the hole bigger. But twisting the hose first is essential.
If the rubber hose is hard, then it should be replaced.
If OP is having some issues, then maybe inspection of all vac hoses should be done.
I am never in favor of reaching out to miracle cure .. but the choice is for the owner to make. If you do use seafoam or other, please followup with a oil change.
I have used seafoam before but cant say I noticed a difference. If you have low compression, its worth the time to try it but for most engines its wasted tme. Plus they tell you to change the spark plugs afterwards, which is kind of a hassle. OP didnt ask for our opinions on if he should do it. Only how to do it.
Salim, All vacuum lines harden over time. It does not mean they need replacing. The enlargement at the end of the steel ports tends to form an indentation inside the hardened rubber hose and this can make removing the hose tough at first. Again, no reason to run to Lexus to replace all the vacuum hoses.
07-08-16, 06:46 PM
Using Seafoam on Car
