Seafoam

Post by **shaker_chi** » 23 Oct 2016, 12:36

I'm swapping out my spark plugs today and was wondering since I have them out, would it be wise to put a teaspoon or a few drops of seafoam directly on top of the cylinder. I have used it in the past through the vacuum tree, but never on this car I'm working on today. Any suggestions would be greatly appreciated.

Eddie g

Post by **scot850** » 23 Oct 2016, 14:23

I would caution doing that as it may remove all the carbon from the rings and you lose compression or end up with the lawnmower syndrome. Why not just add it to the gas tank and take it for a good run?

Neil.

kippster41493 · Post by **kippster41493** » 25 Oct 2016, 11:51

It's not advisable, through the vacuum tree and through the injectors it gets atomized. Too much could cause compression issues, I would just stick with the normal way of doing it.

dorvin · Post by **dorvin** » 25 Oct 2016, 16:23

I normally just run a can through the gas each time I change my oil. I'm interested in running it through the vacuum tree, I'd have to drive out of the city to do it though, as if I'm understanding it correctly, it can really cause a smoke show.

Post by **FLXC90** » 25 Oct 2016, 16:29

Like Neil said, direct application in the cylinder could cause uneven cleaning, or degradation of your ring seal.

Through the intake on a warm motor allows a steam cleaning effect on your intake tract. Like easy-off in a hot oven. All the backside of your valves, where fuel treatment doesn't get.

To clean your piston tops and combustion chamber, cleaners through the fuel system.

PeteB · Post by **PeteB** » 25 Oct 2016, 18:31

I've never heard of carbon _helping_ the rings seal. This guy looks at
the pistons with a camera and he shows that pouring a small amount
in as the OP suggests was most effective:

Here he does it the usual way, again looking with a camera:

I'm nervous about pouring even a very small amount in the spark plug
hole but I have a feeling that it is most effective.