So I was changing my sparkplugs the other day and I ran a small light down into the cylinder and noticed that the pistons all seem to have what looks like small deposites of surface rust on them.

There is practically no carbon build up at all. You can still see the surface of the piston clearly.

Any thoughts?

Is this normal?

 

There is no way it is rust, it is carbon you see down the spark plug hole, which is 100% normal.

 

there were no surface rust on mine when we pulled the head

in fact, mine looked pretty clean

 

X2

 

sea foam time

 

That **** rocks

 

cool, thanks for the help. I wasn't sure what it was but there was only vary sparse pieces of the pistons covered. I figured I would ask at least.

 

i'm gonna snag a can for this weekend when i does my oil change i'll throw some in the oil drive around suck some in the engine and change the oil

 

how will sea foam remove deposites on pistons?

 

It can't be rust, because your pistons are aluminum.

It more then likely is in fact carbon.





Aw damn, posted too slow.

 

http://www.seafoamsales.com/motorTuneUpTechGas.htm

 

kick ass. gotta get me some.

I guess I have some carbon on my pistons...time for a clean up

Not bad considering the car has 167, 000 kms on it....

 

yeah...do the sea foam.....

aluminum doesn't rust...but it does build up a coating that is one of the strongest known to man....Aluminum Oxide....(in case you are wondering it is in most sand paper and grinder wheels)....so pretty much what you are looking at is a carbon build up with maybe a hint of oil/fuel giving that reddish color...

 

you run it thru the intake, putting it in the oil wont clean the pistons.

 

half in the gas half in the oil

 

Could you use the breather hose from the crank case to suck it up?

 

thats what i did...i noticed a little more pep to her after

 

dont use the breather hose on the lsj use the line coming from the intake manifold to bypass unit...on the 2.2/2.4 i dont know what you would use

 

You can suck it up through the brake booster hose on the 2.2/2.4's

i'm gonna try this next week most likely.

Although through some research I've heard a good steam clean can help almost as much

 

lol seafoam is steamcleaning lol...and use the oil seperator hose that goes to ur intake...goes from intake to the top of the head...thats what i used cause i heard the brake booster is a pain to get to in the 2.2